How many revolutions does a chainsaw have

A chainsaw is a technically sophisticated tool that needs to be serviced from time to time. Cleaning, replacing filters and, of course, adjusting the carburetor of the chainsaw will help to serve the entire life set for it. In this article, we will consider the issue of carb settings. How and why it is carried out.

Situations in which adjustment is necessary

New chainsaws are supplied from the manufacturer with adjusted carburetors. This is called standard adjustment. But for the normal passage of the running-in process, it is necessary to lower the maximum engine speed, to adjust the carburetor. After running in, the chainsaw needs to be fine-tuned to achieve maximum engine efficiency.

Also, a signal for cleaning and adjustment is increased fuel consumption, which negatively affects the operation of the exhaust system. Simply put, the chainsaw begins to smoke very much and the muffler becomes clogged with carbon, which in turn will lead to a decrease in power. With a lack of fuel in the mixture, engine parts are poorly lubricated, and premature wear occurs. Also, a poor-quality mixture can cause the engine to jam due to overheating (this is one of the reasons why the chainsaw does not start).

Adjustment is necessary when the engine does not keep idle, stalls or does not develop full power.

The carburettor must be adjusted with clean air and fuel filters.

Tools

Correct adjustment of the carburetor of the chainsaw should be carried out using a special tool. a tachometer. It allows you to most accurately determine the maximum number of engine revolutions and adjust them according to the requirements of the manufacturer. To adjust, you need to have a small slotted screwdriver. For some models of chainsaws, you will need a special adjustment key, without which it is impossible to carry out work.

The key for adjusting some carburetor models is available only at service centers authorized by the manufacturer for the repair of chainsaws. This measure is aimed at reducing damage due to improper settings by inexperienced users and those who are engaged in repair, without having official permission to do so.

Setting up the chainsaw should, if possible, be carried out in official service centers that have a certificate from the manufacturer.

How to adjust the carburetor

The algorithm for setting up the chainsaw is quite simple and consists of the following steps:

  1. Adjustment of the engine for smooth operation at low speeds.
  2. Setting the carburetor for the correct flow of the fuel mixture at maximum speed.
  3. Fine carburetor adjustment for idling.
  4. Checking the chainsaw in all modes.

The carburetor must be adjusted after the engine has run a little and warmed up.

Now we will consider how the correct adjustment of the carburetor of the chainsaw goes in more detail. Almost all carburetor models have three adjusting screws. The screw (T) is responsible for fine tuning in idle mode. Screw (H) setting for maximum speed. The screw (L) controls the formation of the mixture at low speeds. By tightening the screws (L) and (H), the fuel supply and the mixture are leaner, respectively, revolutions increase.

Process description

If the carburetor of the chainsaw is not adjusted, and it is not possible to start the chainsaw, then the setting is started by setting the screws (L) and (H) to the standard setting. This is a 1/5 turn of the screws until fully tightened. After which, it is necessary to start the engine, let it run for a bit and warm up. The next step is setting the low speed mode. Optimum engine operation at the “bottom” can be achieved by adjusting the screw (L) and idle speed (T). To do this, first screw (L) is tightened until the maximum engine speed is obtained, then it is released by 1/4, and the screw idle is normalized by screw (T).

After adjusting the work on the "bottoms" is the adjustment of traction and maximum engine speed. To do this, slowly tighten the screw (H) and check the speed using the electronic tachometer.

exceeding the maximum engine speed declared by the manufacturer is unacceptable.

An important step is to check the saw in all operating modes after adjusting it, for this you need to allow the chainsaw to cool, and then start according to the cold tool start algorithm. If the saw starts up normally and is idling smoothly, you need to check how it saws. If in the process of checking deficiencies in the power of the chainsaw are found, it is necessary to repeat the adjustment of the screw (H) by unscrewing it and checking the traction in operation.

loss of traction at maximum speeds recommended by the manufacturer is an indicator of CPG wear or poor fuel quality.

Carburetor adjustment for Chinese chainsaw

Carburetors mounted on Chinese-made saws are made similarly to European ones and have the same tuning screws.

The carburetor of the Chinese chainsaw is adjusted according to the algorithm presented above, and is distinguished by the fact that during the initial adjustment of the screws (L) and (H) they must be turned out two turns. Further, the carburetors of the Chinese saw are regulated in the same way as the European ones.

Video

The setting of the carburetor of the saw can be studied in the video below. In this video, the wizard shows how the step-by-step adjustment of a Chinese-made chainsaw is performed without using a tachometer. Carries out after adjustment check in various modes.

Adjusting the carburetor of the chainsaw, although it seems a fairly simple process, but requires a very careful and responsible approach. The article describes the process in sufficient detail, however, if you have never regulated a chainsaw, you should turn to specialists, this will save time, nerves and money.

Chainsaw device Calm MS 180. model components

The design of the Stihl MS 180 chainsaw is quite difficult to call simple. this is due to the features of this model. The Calm 180 chainsaw device consists of the following components:

  • Guide bar Ematic;
  • Oilomatic proprietary saw chain;
  • Air filter;
  • Throttle;
  • Lever for cold and hot start;
  • Control lever;
  • Spark plug;
  • Handle with proprietary vibration reduction system,
  • Powerful engine with increased working life.

The manufacturer took into account the possibility of regular operation of the chainsaw at low temperatures, which resulted in the presence of a proprietary system for a smoother and faster engine start.

Chainsaw Calm MS 180. specifications

In terms of performance, the Stihl MS 180 chainsaw is in many ways superior to its price category counterparts. This tool, as well as its modification. the Shtil 180 C chainsaw, has the following technical characteristics:

  • Power. 2 liters. with.;
  • The working volume of the cylinder is 31.8 cm3;
  • Fuel consumption. 0.7 l / h;
  • Fuel tank capacity. 250 ml;
  • The volume of the tank for oil supply is 145 ml;
  • Idling speed. 2800 rpm;
  • Launch. manual;
  • Chain lubrication. automatic;
  • The length of tires used is 30–35 cm;
  • Chain Step. 3 / 8’’v
  • Working weight. 4.2 kg.

Chainsaw Calm MS 180 does not require special care. The only thing that is needed from the owner is to use high-quality fuel and top up the oil on time. The diameter of the file for sharpening the Stihl MS 180 chainsaw chain should be 4.5–5 mm.

Features of operation of the Stihl MS 180 chainsaw

This model of a chainsaw, as well as its modification. chainsaws Calm MS 180 C BE, is not difficult to use. Below we will study the basic rules of operation, which will protect the main parts and mechanisms of the chainsaw from premature wear.

How to breed gasoline for the Calm 180 chainsaw?

The chainsaw motor should run on a properly prepared mixture of gasoline and oil. The higher the quality of these two components, the longer your garden tool will last. Of great importance is also the proportion of oil and gasoline.

The Stihl MS 180 chainsaw instruction manual clearly indicates that the ratio of oil to gasoline must be 1:50.

How to start a chainsaw Calm 180?

The correct order for starting the chainsaw is as follows:

  1. Before you start the saw, you need to activate the chain brake. To do this, the brake lever must be tilted forward;
  2. Next, you need to remove the protective cover;
  3. Next, you need to click on the decompression valve. this will greatly facilitate the starting of the motor;
  4. After that, press the fuel pump several times. This will reduce fuel consumption directly when starting the saw engine;
  5. Then set the throttle combination lever down to the “cold start” position. To do this, you first need to activate the gas lever;
  6. Slowly pull the cable until you feel resistance. After that, quickly pull the cable toward you until you hear that the engine has started and stalled;
  7. Then move the combination lever one position up;
  8. Pull the cable again until the motor starts;
  9. As soon as the engine starts, press the trigger, and, having moved the combined lever to the up position all the way, release it;
  10. Release the chain brake lever, pulling it towards you until a characteristic click is heard;

It is worth noting that all the above steps must be performed every time you start a chainsaw with a cold engine.

How to break in a new Calm 180 chainsaw?

Starting to use the Stihl MS 180 chainsaw, most tool owners do not know how to run around a purchased saw. To do this, proceed in the following order:

  1. Check for chain oil. to do this, put the saw on an old newspaper and start the tool. If there is oil, then traces of it will appear on paper;
  2. Next, turn off the inertia brake;
  3. After that, start the chainsaw and leave it to idle for 20 minutes. over, every minute you need to make short-term pulls on the trigger of gas;
  4. After 20 minutes, start sawing thin branches, gradually increasing the density and diameter of the wood.

Having completed all of these steps, you will correctly run a new chainsaw.

Chainsaw Calm 180. malfunctions and repair

In the case of the Stihl MS 180 chainsaw, malfunctions and methods for their elimination may be different. In order to be able to independently fix the breakdown of the Stihl MS 180 chainsaw, we will study the most common causes of breakdowns and methods for eliminating them on our own.

Chainsaw will not start. causes and repair

If you notice that your saw has stopped starting up, this may indicate that engine oil is filling up the tool’s candle. To inspect the candle, you need to remove the rubber cap on the body and unscrew the part with a candle wrench. If you saw large spots of oil on the candle, it means that the cause of the breakdown lies in this.

If the saw does not develop speed, then the first thing to do is wipe and dry the chainsaw candle. You will also need to dry the chamber in which the candle was located. The next step is to replace the oil pump from which the engine oil flows. To do this, remove the saw body and unscrew the screws holding the rubber primer. After that, the upper part of the pump is removed.

Stihl MS 180 chainsaw stalls idling

The most common reason for this is improper adjustment of the saw carburetor. If the saw does not keep idle, then you will need to re-configure the tool assembly. To do this, take the adjustment key from the saw set and insert it into the screw “” on the tool handle. During this, slowly turn the screw clockwise until the saw starts to work normally.

Gasoline not supplied. an independent solution to the problem

The reason for this lies in the malfunction of the carburetor. In order to repair the unit, it will need to be dismantled. However, before disassembling the carburetor on the Calm 180 chainsaw, be sure to disconnect the throttle link and ignition wire from it. Further actions are as follows:

  1. The carburetor device is attached to the saw structure with 4 screws. Unscrew them and pull out the assembly from the chainsaw. Before removing the carburetor, do not forget to wear gloves so as not to get your hands dirty with oil;
  2. Before you clean the carburetor, you will need to apply a household degreaser to its walls. Wait 5 minutes and start wiping the walls of the assembly;

After cleaning the carburetor, you need to re-configure the ignition of the chainsaw. You can find out how to set the ignition on how to set the ignition. If you have lost the instruction and do not know how to adjust the ignition, then proceed in this order:

  1. Remove the starter cover and remove the 4 screws;
  2. Inspect spark forming parts. If they are clean, make sure that the gap between the magnets and the flywheel is correctly set. A gap of 0.4 mm will be considered optimal.

In order not to resort to regular carburetor repairs, try to use high-quality fuel and oil from trusted manufacturers.

Chainsaw starts poorly. looking for reasons

If your saw does not start up cold, then the first thing to do is to inspect the pistons of the tool. The piston group of the Stihl MS 180 saw is highly reliable, however, due to lack of engine oil or mechanical shock, an immediate replacement piston may be required. Before changing the piston, we recommend that you study the specified algorithm:

  1. Remove the top cover of the saw and unscrew the candle;
  2. Remove the stoppers from the shock absorbers, the drive sprocket and starter;
  3. Then the flywheel, the worm drive and the winning chain are removed;
  4. Then remove the ignition coil and muffler;
  5. At the end, the piston group of the chainsaw is dismantled.

After that, carefully inspect the unit and the space below it. If necessary, clean contaminated surfaces and install a new piston group.

No oil is supplied to the chainsaw chain

If you notice this malfunction, then the first thing to do is set up the oil supply. The oil supply to the circuit is adjusted as follows:

  1. Locate the adjustment screw at the bottom of the chainsaw next to the sprocket;
  2. To increase the oil supply, the screw must be turned to the side "";

After that, put the saw on the paper and wind it. If you did everything right, a drop of oil will appear on paper.

Starter Cord Replacement

If you pull the cable too hard, sooner or later you will have to replace it. This is easy enough to do. To do this, proceed in the following order:

  1. Remove the 4 screws holding the flywheel with the cord;
  2. Remove the cover and pull out the torn cable;
  3. Install the new flywheel with the cable and screw the screws back in.

After this, do not pull the cable a few times until you feel resistance.

Adjust the carburetor chainsaw

The use of a chainsaw greatly simplifies the life of even amateurs, and in some professions it is almost indispensable. But, like any relatively sophisticated equipment, a chainsaw needs regular maintenance. If it is not performed on time or poorly, then this leads to various malfunctions. One of the most common causes of malfunctions is the incorrect setting of the carburetor of the chainsaw, which stray due to the displacement of the adjusting screws under the influence of vibrations or as a result of unsuccessful attempts to regulate it.

Chainsaw Adjustment required in the following cases:

  • factory settings carburetor chainsaws knocked down;
  • the engine starts with a strain and stalls almost instantly;
  • particles of garbage getting into the fuel distribution mechanism due to a malfunction of the air purification system;
  • the exhaust is too thick, the fuel consumption is too large, the fuel does not burn completely in the cylinder;
  • significant wear of the piston group (in this case chainsaw carburetor adjustment is a temporary measure).

The carburetor is designed to prepare the fuel mixture for supply to the engine. Violations of the proportions in the fuel mixture lead to malfunctions in the engine.

The design of carburetors in different models of chainsaws differs, but they all operate on the same principle. The flow of air quickly moves through the channel. Its speed is controlled by a damper that blocks the channel. The fuel supplied to the channel through the atomizer is mixed with air, after which the resulting air-fuel mixture enters the motor.

A carburetor always consists of the same set of parts, although it may vary slightly depending on the manufacturer. It consists of the following parts:

  • The basis. It is a special tube that resembles the aerodynamic design. A stream of air passes through it. In the middle of the tube in the transverse direction there is a shutter, the position of which can be changed. The more it is pushed into the aisle, the less air gets into the motor.
  • Diffuser. This is the narrowed part of the pipe. With its help, an increase in the speed of the air flow is provided in the part from which the fuel is supplied.
  • Float chamber. This element is shaped like a tank. It is used to continuously maintain the optimum fuel level before entering the channel from which air is supplied.
  • Channels for fuel. The fuel mixture is located in the float chamber, from where it enters the nozzle, and then is fed to the atomizer.

In order for the tool to function efficiently and evenly, the maximum return and fuel consumption are economical, timely chainsaw carburetor adjustment. Before performing it, check the cleanliness of the air and fuel filters. For most of the chainsaws, adjustment is made using three screws: high speed, low speed, idle.

Adjustment of the carburetor should be done with the utmost accuracy, since errors are fraught with very significant consequences, up to the failure of the motor.

Signs of the correct settings are as follows:

  • motor acceleration is quick and smooth;
  • the chain remains motionless at idle;
  • the engine makes an even sound during operation, reminiscent of the sound of a four-stroke unit.

Carburetor adjustment for Chinese chainsaw It is produced in the same way as the models produced by European manufacturers, in fact, the Chinese counterparts are copies of famous brand tools, but with some changes.

Video: How many revolutions does a chainsaw have


To do this, the same screws H, L and T are used. The standard for the carburetors of Chinese chainsaws is the position of the screw L, at which it is weakened by half a turn compared to the fully clamped state. For screw H, the standard is one revolution from the same position. Idle adjustment is carried out on a warm engine.

On some models, only idle is regulated. Nevertheless, the owners of Chinese chainsaws and service employees talk about the increased complexity of adjusting the carburetor for tools produced by Chinese manufacturers. Even experienced craftsmen adjust chinese chainsaw takes a little more time, unlike the original tools.

Chainsaw speed setting

For those who have chainsaw, do-it-yourself carburetor adjustment not particularly difficult. To do this, you need to study the carburetor device and remember the sequence of actions performed to regulate the elements on which the correct operation of the parts of the carburetor itself and the elements located near it depends.

Before adjusting chainsaw carburetor, need to prepare the device. To this end, the following actions are performed:

  • The engine is warming up, for which it starts about ten minutes before the start of repair work, and turns off after they start.
  • Checking and flushing the air filter.
  • The chain is stopped by turning the screw T as far as it will go.

To ensure the safety of repair work, it is necessary to prepare a flat surface so that the tool can be placed on it neatly and the chain deployed in the opposite direction. A tachometer will be required to determine abnormalities in the functioning of the carburetor.

Anyone who wants to know how to adjust the carburetor on a chainsaw, it must be borne in mind that this procedure consists of two main stages. The first is carried out with the engine turned on, the second. after warming up the motor.

To successfully regulate the carburetor, you should first study the instructions for using a specific model of a chainsaw to clarify the additional nuances of adjusting this equipment.

At the first stage, the low and high speed screws are rotated clockwise to the stop, and then they are turned in the opposite direction by one and a half turns and stored in this position.

In the second stage, the motor is switched to medium speed for warming up for ten minutes. The screw for adjusting idle speed must be moved clockwise. It can only be released when the motor enters stable operation. It should be ensured that during this process the chain remains stationary.

When the engine is idling, it may stall. In such a situation, immediately turn the screw clockwise until it stops. In some cases, chain displacement occurs. In such situations, turn the screw counterclockwise.

When resolving the issue, how to adjust the chainsaw, it is necessary to check the functioning of the motor during the execution of maximum revolutions. With the proper functioning of the motor after pressing the accelerator, the speed increases rapidly to fifteen thousand revolutions per minute.

In the absence of such a reaction or an excessively slow increase in speed, it is necessary to turn the screw marked L counterclockwise. It is important to ensure moderate movement, since the rotation should not be more than one eighth of a 360 degree rotation.

The maximum number of revolutions is limited by using the adjusting screw marked with the letter H. To reduce the number of revolutions, it is necessary to rotate it counterclockwise, and to increase it, in the opposite direction. The maximum frequency should not be more than fifteen thousand revolutions per minute. When turning this screw, ignition processes should be considered. If even subtle failures occur, the maximum speed must be reduced.

How to set up a carburetor on a chainsaw, for it to function correctly at idle? To do this, ensure the following conditions are met:

  • The chain remains stationary at idle.
  • The sound made by the motor resembles the sound of a four-stroke unit.
  • The motor increases speed at an accelerated pace, even with a slight pressure on the accelerator. With a smooth increase in pressure, the motor speed increases proportionally, reaching the maximum permissible level.

If inconsistencies are found to these conditions, it is necessary to repeat the main configuration step.

To set up correctly carburetor chinese chainsaw, remember its factory settings, and then turn on the motor. In order to precisely set your parameters, in the future you will have to keep it in working condition for several hours. In some cases, this problem can be solved immediately after a ten-minute operation of the motor, but many models of Chinese manufacturers need special treatment.

Setup is performed in the following order:

  • Regulation starts at idle. It is necessary to achieve a smooth increase in the engine speed using the adjusting screws, so first you need to leave it in working condition for some time at low speeds. The movement of the chain along the bus represents a deviation from the norm. In this case, you should achieve an optimal position by adjusting using the extreme screws so that the chain does not move.
  • The transition to medium speed revolutions. In some cases, this is accompanied by smoke from the motor. This defect is eliminated by tightening the screw for a less saturated fuel mixture. However, the engine speed will increase. It is necessary to change the settings until the motor starts to increase the speed smoothly when the throttle is pressed, without interruptions or sudden jerks.
  • Checking the chainsaw motor. The tool is transferred to minimum revolutions, after which a quick press on the lever and its hold at maximum pressure for three seconds. If there is a malfunction in the functioning of the motor, the screw should be loosened gradually until an optimal position is reached.
  • The saw should work in real conditions for some time. To do this, you need to saw wood, and then inspect all the details involved in this process. If there are deviations, they must be corrected with the help of adjusting devices. After eliminating all the defects and setting the optimal settings for supplying the fuel mixture, the setup procedure is completed.

About carburetor design

The carburetor is used to mix a combustible consistency with air, subject to well-established proportions. If clear doses are not respected, the health of the motor is at risk. When a huge amount of air enters during the mixing of the component, and there is not enough fuel, such a mixture is considered "poor."

It should not be allowed and oversaturation, because with a large amount of fuel in comparison with air, malfunctions or deterioration of the motor are also likely. Adjusting the carburetor is necessary not only before the initial implementation, but also when any differences in its work are revealed. Before you start working with a chainsaw, do not forget to run it in.

Carburetor parts

The carburetor design contains a standard set of parts, but may vary slightly depending on the manufacturer. Components:

  1. The basis. This is a special tube that visually resembles an aerodynamic design. Air passes through it. In the transverse direction, a shutter is located in the middle of the pipe. Its position can be changed. The more it is pushed into the passage, the less air enters the engine.
  2. Diffuser. This is the lent part of the tube. With its help, the air supply rate increases in the very segment where the fuel comes from.
  3. Channels to supply fuel. The fuel mixture is contained in the float chamber, then passes into the nozzle, from which flows into the spray.
  4. Float chamber. It is a separate structural element that resembles the shape of a tank. Designed to constantly maintain an optimal level of fuel fluid before entering the channel from where air comes.

Not sure which chainsaw to choose? Read our article.

Looking for cheaper models, but reliable and time-tested? Pay attention to Russian-made chainsaws.

Or explore foreign chainsaw manufacturers such as Calm.

What you need to have to configure

Each carburetor owner must have the necessary tools to adjust this system. There are three adjusting screws that are located on the device. They have their own markings:

  • L. screw for low speed correction.
  • H. screw for adjusting high revs.
  • T. regulates idling, in most cases it is used for experiments.

Chainsaw Air Filter

Before adjusting the carburetor, you need to prepare the device:

  1. The engine warms up, that is, it starts about 10 minutes before repair, and turns off when work starts (see how to start a chainsaw).
  2. The air filter is checked and flushed.
  3. The chain is stopped by turning the T screw all the way (see chain oil).

To carry out safe repairs, you need to prepare a flat surface where you can neatly position the device and unscrew the chain in the opposite direction. Need a tachometer. It determines the presence of a malfunction in the carburetor. At revolutions of the screws, the sound should be perfect and absolutely even. If screeching notes are noticed, then the mixture is oversaturated.

Setup Instructions

Carburettor adjustment is divided into two main stages. The first is called basic. It is made with the engine turned on. The second is performed when the engine is warm.

To carry out the carb adjustment procedure successfully, you need to familiarize yourself with the instruction manual specific model to identify additional features of the device settings.

First stage

The adjusting screws of the highest and lowest revolutions should be carried out clockwise until the highest resistance is encountered. When the screws reach the stop, you need to translate them in the opposite direction and leave after passing 1.5 turns.

Main stage

STIHL 180 chainsaw checking how many turns

In this video we will answer the question of how to adjust or adjust the carburetor chainsaws do it yourself

STIHL 230 chainsaw checking how many turns

Carb adjustment chainsaws Champion 254 do it yourself. Shows initial carb adjustment

The engine starts at medium speed and it warms up like this for about 10 minutes. The idle adjustment screw must be clockwise. It is released only when the engine comes into stable operation. It must be ensured that the chain does not move during this process.

In idle mode, the engine may stall (the reason is here). In this case, immediately adjust the adjusting screw clockwise to the stop. Sometimes the chain begins to move. In this case, turn the adjusting screw in the opposite direction.

Acceleration Test

You need to do a little research. The acceleration of the device is initiated. It is necessary to evaluate the serviceability of the engine during the maximum speed. When the engine is functioning properly, it means when you click on the accelerator, the speed quickly rises to 15,000 rpm.

If this does not happen or the speed increase is too slow, you must use the screw marked with the letter L. It turns counterclockwise. It is necessary to observe moderate movements, since the turn cannot be more than 1/8 of the full circle.

Maximum speed

To limit this figure, you need to use a screw marked H. To increase the number of revolutions, turn it clockwise, and to decrease it in the opposite direction. The maximum frequency must not exceed 15,000 rpm.

If you make this figure more, the engine of the device will run to wear, which will lead to problems in the ignition system. When rotating this screw, the ignition processes of the device must be taken into account. If the slightest glitches appear, then the maximum value of the revolutions must be reduced.

Final idle check

Before this procedure, it is necessary to perform a full adjustment of the components of the carburetor when operating at maximum speed. Next, you should check the operation of the device in idle cold mode. When the correct parameters are reached during adjustment, you can see the exact compliance of the carburetor design with the following criteria:

    1. When the idle cold mode is connected, the circuit does not move.

    Chainsaw Accelerator

    1. When even a slight pressure on the accelerator is carried out, the engine accelerates at an accelerated pace. With a gradual increase in pressure, you can notice that the engine speed is proportionally increasing, reaching the maximum allowable values.
    2. When the engine is running, you can compare its sound with a four-stroke device.

    If abnormalities are noted in the given parameters or the device was not fully adjusted, you need to perform the main setup step again. Sometimes actions are performed incorrectly. In this case, the device may fail due to the loss of the correct node settings. In this case, you will have to contact a specialist.

    Dismantling the carburetor if necessary to check or repair the components

    The device of different models of carburetors is almost the same, therefore, when working with them, you can use the standard scheme. All items must be removed carefully and then lay out in the order below, so that you can successfully arrange the objects in place at the end of the repair work.

    Top cover removal

    1. The top cover is removed. To do this, unscrew the 3 bolts holding it in a circle.
    2. Foam is also removed, as it is the upper part of the filter that conducts air.
    3. The fuel hose is removed.
    4. The drive rod is displayed immediately on it.
    5. The cable tip is disconnected.
    6. The gas hose can be completely removed by steadily pulling it off the fitting.

    To finally prepare the carburetor for a major overhaul or replacement of the smallest parts, you need to carefully disconnect it from the main system. Sometimes it requires further disassembly. Unscrew the components carefully and fold the fasteners in groups, as these small parts are easily lost.

    Instruction for chinese

    To correctly configure the carburetor of a Chinese chainsaw, you must first remember the factory settings of the device, then turn on the engine. In the future, you will have to leave it to work for several hours to accurately set your own parameters. Sometimes work is performed once after a ten-minute operation of the engine, however, many Chinese-made models require special handling.

    Chinese model of chainsaw

    Adjustment Procedure:

    1. Events start at idle. Using the adjusting screws, you need to achieve a systematic set of revolutions by the engine, so you should first let it work at low speeds. A deviation from the norm is the movement of the chain along the bus. In this case, it is necessary to adjust the extreme position of the extreme screws so that the chain remains stationary.
    2. Switching to medium speed revs. Sometimes the engine smokes at the same time. This defect can be eliminated by tightening the screw to supply a leaner fuel mixture.

    In this case, the smoke will disappear, but the engine speed will increase. It is necessary to adjust the settings to the level where, when you press the throttle, the engine gains speed smoothly, sharp jerks or interruptions are not heard.

  1. Device engine check in progress. The chainsaw is transferred to the minimum speed, and then a rapid pressing of the lever is carried out. With maximum pressure, it is held for 3 seconds. If there is a malfunction in the engine, it is necessary to gradually loosen the screw until the optimum position is reached.
  2. Chainsaw should work for several hours in real conditions. It is necessary to engage in sawing wood, and then perform an inspection of all the elements involved in this event. If there are deviations, they need to be corrected using adjusting devices. When all defects have been eliminated and optimal settings have been set for the supply of correctly concentrated fuel, the process of setting up the device can be considered completed.
  3. Look at the video clearly:

    Conclusion

    In order for the chainsaw to work properly, it is necessary to carefully carry out work on adjusting the carburetor in exact accordance with their priority. If there are any violations in the operation of the device, you must independently perform its complete disassembly. In most cases, replacement of any parts that have become unusable is required.

    With a constant check of the quality of the carburetor settings and the implementation of timely actions to improve its operation, there are no problems with the chainsaw.

    About which chainsaw to choose. read here.

    About carburetor design

    The carburetor is used to mix the combustible mixture with air in compliance with predetermined proportions. If the exact doses are not respected, the health of the engine is at risk. When a large amount of air enters during mixing of the components, and there is not enough fuel, such a mixture is considered “poor.”

    It should not be allowed and oversaturation, as with a large amount of fuel compared to air, malfunctions or engine wear are also possible. Adjustment of the carburetor is necessary not only before initial use, but also when any deviations in its operation are detected. Before you start working with a chainsaw, do not forget to run it in.

    The carburetor design contains a standard set of elements, but may vary slightly depending on the manufacturer. Components:

    1. The basis. This is a special tube that visually resembles an aerodynamic design. Air passes through it. In the transverse direction, a shutter is located in the middle of the pipe. Its position can be changed. The more it is pushed into the passage, the less air enters the engine.
    2. Diffuser. This is the lent part of the tube. With its help, the air supply rate increases in the very segment where the fuel comes from.
    3. Channels to supply fuel. The fuel mixture is contained in the float chamber, then passes into the nozzle, from which flows into the spray.
    4. Float chamber. It is a separate structural element that resembles the shape of a tank. Designed to constantly maintain an optimal level of fuel fluid before entering the channel from where air comes.

    Not sure which chainsaw to choose? Read our article.

    Looking for cheaper models, but reliable and time-tested? Pay attention to Russian-made chainsaws.

    Or explore foreign chainsaw manufacturers such as Calm.

    What you need to have to configure and adjust your chainsaw yourself

    Each carburetor owner must have the necessary tools to adjust this system. There are three adjusting screws that are located on the device. They have their own markings:

    • L. screw for low speed correction.
    • H. screw for adjusting high revs.
    • T. regulates idling, in most cases it is used for experiments.

    Before adjusting the carburetor, you need to prepare the device:

    1. The engine warms up, that is, it starts about 10 minutes before repair, and turns off when work starts (see how to start a chainsaw).
    2. The air filter is checked and flushed.
    3. The chain is stopped by turning the T screw all the way (see chain oil).

    To carry out safe repairs, you need to prepare a flat surface where you can neatly position the device and unscrew the chain in the opposite direction. Need a tachometer. It determines the presence of a malfunction in the carburetor. At revolutions of the screws, the sound should be perfect and absolutely even. If screeching notes are noticed, then the mixture is oversaturated.

    How to properly adjust the factory saw

    Carburettor adjustment is divided into two main stages. The first is called basic. It is made with the engine turned on. The second is performed when the engine is warm.

    To carry out the carb adjustment procedure successfully, you need to familiarize yourself with the instruction manual specific model to identify additional features of the device settings.

    First stage

    The adjusting screws of the highest and lowest revolutions should be carried out clockwise until the highest resistance is encountered. When the screws reach the stop, you need to translate them in the opposite direction and leave after passing 1.5 turns.

    Main stage

    The engine starts at medium speed and it warms up like this for about 10 minutes. The idle adjustment screw must be clockwise. It is released only when the engine comes into stable operation. It must be ensured that the chain does not move during this process.

    In idle mode, the engine may stall (the reason is here). In this case, immediately adjust the adjusting screw clockwise to the stop. Sometimes the chain begins to move. In this case, turn the adjusting screw in the opposite direction.

    Acceleration Test

    You need to do a little research. The acceleration of the device is initiated. It is necessary to evaluate the serviceability of the engine during the maximum speed. When the engine is functioning properly, it means when you click on the accelerator, the speed quickly rises to 15,000 rpm.

    If this does not happen or the speed increase is too slow, you must use the screw marked with the letter L. It turns counterclockwise. It is necessary to observe moderate movements, since the turn cannot be more than 1/8 of the full circle.

    How to adjust the maximum number of revolutions

    To limit this figure, you need to use a screw marked H. To increase the number of revolutions, turn it clockwise, and to decrease it in the opposite direction. The maximum frequency must not exceed 15,000 rpm.

    If you make this figure more, the engine of the device will run to wear, which will lead to problems in the ignition system. When rotating this screw, the ignition processes of the device must be taken into account. If the slightest glitches appear, then the maximum value of the revolutions must be reduced.

    Final idle check

    Before this procedure, it is necessary to perform a full adjustment of the components of the carburetor when operating at maximum speed. Next, you should check the operation of the device in idle cold mode. When the correct parameters are reached during adjustment, you can see the exact compliance of the carburetor design with the following criteria:

      When the idle cold mode is connected, the circuit does not move.
    How many revolutions does a chainsaw have

  4. When even a slight pressure on the accelerator is carried out, the engine accelerates at an accelerated pace. With a gradual increase in pressure, you can notice that the engine speed is proportionally increasing, reaching the maximum allowable values.
  5. When the engine is running, you can compare its sound with a four-stroke device.
  6. If abnormalities are noted in the given parameters or the device was not fully adjusted, you need to perform the main setup step again. Sometimes actions are performed incorrectly. In this case, the device may fail due to the loss of the correct node settings. In this case, you will have to contact a specialist.

    Dismantling the carburetor if necessary to check or repair the components

    The device of different models of carburetors is almost the same, therefore, when working with them, you can use the standard scheme. All items must be removed carefully and then lay out in the order below, so that you can successfully arrange the objects in place at the end of the repair work.

    1. The top cover is removed. To do this, unscrew the 3 bolts holding it in a circle.
    2. Foam is also removed, as it is the upper part of the filter that conducts air.
    3. The fuel hose is removed.
    4. The drive rod is displayed immediately on it.
    5. The cable tip is disconnected.
    6. The gas hose can be completely removed by steadily pulling it off the fitting.

    To finally prepare the carburetor for a major overhaul or replacement of the smallest parts, you need to carefully disconnect it from the main system. Sometimes it requires further disassembly. Unscrew the components carefully and fold the fasteners in groups, as these small parts are easily lost.

    How to properly configure a Chinese-made saw. adjusting instruction

    To correctly configure the carburetor of a Chinese chainsaw, you must first remember the factory settings of the device, then turn on the engine. In the future, you will have to leave it to work for several hours to accurately set your own parameters. Sometimes work is performed once after a ten-minute operation of the engine, however, many Chinese-made models require special handling.

    Adjustment Procedure:

    1. Events start at idle. Using the adjusting screws, you need to achieve a systematic set of revolutions by the engine, so you should first let it work at low speeds. A deviation from the norm is the movement of the chain along the bus. In this case, it is necessary to adjust the extreme position of the extreme screws so that the chain remains stationary.
    2. Switching to medium speed revs. Sometimes the engine smokes at the same time. This defect can be eliminated by tightening the screw to supply a leaner fuel mixture.

    In this case, the smoke will disappear, but the engine speed will increase. It is necessary to adjust the settings to the level where, when you press the throttle, the engine gains speed smoothly, sharp jerks or interruptions are not heard.

  7. Device engine check in progress. The chainsaw is transferred to the minimum speed, and then a rapid pressing of the lever is carried out. With maximum pressure, it is held for 3 seconds. If there is a malfunction in the engine, it is necessary to gradually loosen the screw until the optimum position is reached.
  8. Chainsaw should work for several hours in real conditions. It is necessary to engage in sawing wood, and then perform an inspection of all the elements involved in this event. If there are deviations, they need to be corrected using adjusting devices. When all defects have been eliminated and optimal settings have been set for the supply of correctly concentrated fuel, the process of setting up the device can be considered completed.
  9. Before buying, we recommend that you familiarize yourself with the rating of chainsaws for reliability and quality.
    Look at the video clearly:

    Chainsaw Ignition

    Chainsaw ignition

    P.S. Buying the above ignition is not possible, but if there are a couple of places, then at the price of half a chainsaw, that is, it is very tasty.

    Chainsaw Ignition

    ADDED 04/12/2014 01:16

    “I only know one, and even that
    domestic, electronic
    ignition system
    (it was called MB-1, stood
    on chainsaws, walk-behind tractors and
    small boat motors)
    whose magnetic field
    one of 4 magnets
    rotor was directed
    towards the 3rd others,
    momentum of this magnet with
    Reverse polarity
    opened the power thyristor.
    Naturally with time,
    with this arrangement, "
    maybe so?

    ADDED 04/12/2014 18:43

    In the end, you can try the diode, is there a marking on the board? photo will be interesting to see

    ADDED 04/12/2014 18:43

    In the end, you can try the diode, is there a marking on the board? photo will be interesting to see

    He set the zener diodes from 3 to 33 V. Below 5 V there is a shift of spark formation to the end of the oscillator, above 30 V, spark formation begins at high crankshaft revolutions. I optimally selected about 9 volts. With a diode in direct connection, the shooting range opens after three half-waves (at the end of the oscillation). I can’t take a photo, everything is flooded using super-glue-soda technology, only the side of the tracks is left, and actually there is a 22 cm scarf.
    Filled, because it was urgent to work with a saw, and there was no time for disassembly.
    I understand how the circuit works; the positive half-wave through the VD3 VD5 diodes and the primary of the coil is lit up by the conder. Parallel to this, through the divider R1 R3 R4 in the UE of the thyristor D1, it receives the cradle of opening it. (Checked, it opens at 3 volts on the winding).
    When a negative half-wave arrives, the current passes through the VD2 R2 R5 circuit from the coil to ground, and through the zener diode in the UE of the thyristor D2. after it has opened, the current in the circuit increases, an increase in the drop of the creep occurs on R5, since the entire cortex of the coil is applied to the circuit VD2 R2 R5 R5 VD4 D2.
    At some point, the potential on UE D1 through the open diode VD6 will be sufficient to open it. D1 opens and shunts further influence on D2 (in reality now at small (approx. 1000 rpm) several openings / closures of D2 take place. Then only D1 opens and shunts UE D2). Conder C2, I suppose, serves for the following; when a negative half-wave arrives, sparking occurs, D1 opens, (C2 does not seem to play a special role here, except for a slight delay in opening. Then there is a positive half-wave, during which the D1 shooting range opens and charging of the same C2 occurs. When the positive half-wave is already It’s over, there’s still some potential on the Conder, and with the next (third) negative half-cycle, D1 is always open, (what I wrote the third half-wave is stupidly cut off) the whole cramp fits to VD2 R2 D1
    Today I put a 9 volt zener diode, tried to turn it with a drill. In general, at 3000 rpm, the spark interferes in the linear region, but it seems to me that it should interfere at a lower speed. I measured the amplitude on the storage conder, at 3000 rpm 250 V, the pump coil contains 3000 turns, I’ve thought about adding another thousand and a half, the pressure will increase, the thyristor seems to hold by the date of 500 volts. At the same time, the pressure will increase for the opening of the shooting gallery, just got into the right area.

    Everything is thoroughly rechecked, the faulty is replaced. only two unknown ones. the zener diode and the exact number of turns in the pumping coil. The zener diode burst during splitting, and the coil had to be cut lengthwise, so I did not count the turns.

    Yes, but for adults and powerful things. For "mopedok", if only it worked. Do not bother with power. Leave 2000 turns and saw!

    My ignition module died in the trimer, the Homelite garlic trimer, looking up to the Chinese era, pulled familiar sellers, they were warm, a normal braid, but since 2006 they have not been holding it.
    I found that it looks very similar to the module from the 351/352 partner, but it costs a lot. I bought Chinese (11 bucks), started it, it works at idle, a little gas, a shot at the exhaust and then it stalls. Changed under the "guarantee" I put the same eggs. I and the gap and shift, nevermind.
    And then the neighbor just dragged the Partner, the chain lubrication disappeared, picked it up, let me check the module. I put it on the saw, the horse play works like a clock, the partner’s on the trimer, sneezes and stalls again. He began to sin on the flywheel (magnets). I’m taking it off the saw, and they are the same O_o, Well, bah yes, both Amarakans. and the saw’s dowel is also cut off on the saw blade (the repairmen probably squinted, he didn’t make out)
    I put the saw from the trimer, everything works ok. And with the cut-off key on the trimer, it is just possible to twist the ignition earlier later.
    A little twisted. Bingo, trimer earned like new. That is, in the native module, for some time the master chain is tortured.
    Well, figs with her.
    Saw received a "new" flywheel, and the chain lubrication, plows with a bang.
    Scythe, universal module, and “smart” flywheel. also sneezes what is needed

    How to set the ignition on a chainsaw

    Chainsaw ignition system. device, check and adjustment

    Blog Search (loose match):

    Documents matching your request: 30 [5 shown]

      Do-it-yourself chainsaw repairConfirmation level: 51.16%
      Fragments of the text of the post:

    …Repairs chainsaws do it yourself Chainsaw with all desire, it can not be attributed to complex devices. And nevertheless, repair chainsaws can take a lot of time. No repair instructions chainsaws does not replace simple logic. All faults chainsaws can be divided into two main groups. Engine malfunctions Engine malfunctions chainsaws occur quite often, it is their detection and correction that takes the most time from users. Carrying out repairs chainsaws with your own hands, you need to act by the method of exclusion. to check in turn all the possible causes of the malfunction, starting with those that take less time to check and fix. System ignition…… Almost all types of engine malfunctions listed above can be caused by system malfunctions ignition……System ignitionchainsaws. 1. flywheel with built-in magnets, 2. module ignition 3. candle, 4. high voltage wire. If the candle is dry, it means that the problem is most likely not in the system ignition but in not entering the fuel mixture into the cylinder. put a cable on the candle ignition. The reason for the lack of sparks may also lie in the faulty module ignition or violation of the gap between it and the flywheel magnetic circuit. Violation of the gap becomes especially likely if the saw was disassembled before removing the flywheel and module ignition. 2 mm placed between the flywheel boss and the module ignition. Faulty module ignition need to be replaced. thus checking the system ignition and without detecting a malfunction, you can proceed to the fuel mixture supply system. Manufacturers chainsaws recommend replacing the fuel filter every 3 months. As a rule, repairs chainsaws cannot do without cleaning the air filter, because it gets dirty quite quickly. The carburetor is one of the most complex devices chainsaws therefore, it is necessary to start disassembling and cleaning it with a full understanding of the responsibility of this operation. Carburetor chainsaws. Carburetor chainsaws. Carburetor chainsaws. Disassembled carburetor chainsaws If there is no experience and self-confidence, carburetor repair chainsaws it is better to entrust a specialist to a service center. chainsaws should not be lower than 8-9 atm (0.8-0.9 MPa). Chain lubrication system A rare repair manual chainsaws dispensing with the failure of the chain lubrication system, which are quite common. Replacing wearing parts Some parts chainsaws subject to natural wear and tear, must be replaced after a certain period of operation. If you do not replace the wearing parts in time, their excessive wear will adversely affect the other components chainsaws…… Tire chainsaws it wears out especially in the area that is cut most frequently, usually the bottom side of the guide rail. for cost-effective operation chainsaws always spend together. Read more: http://mashom.ru/post_1349975163.html

    Video: Chainsaw Ignition


    Chainsaw device Degree of compliance with request: 23.77%
    Fragments of the text of the post:

    …Device chainsaws Chain Three types of links are included in the chain: cutting, driving and connecting links. Such chains are usually used in household chainsaws and high-profile professionals. Tire chainsaws it’s a chain guide. bar and chain, removable parts chainsaws therefore they are called a headset. Lubrication system chainsaws…… chain brake chainsaws You probably yourself understand that a light touch of a moving chain chainsaws Enough to get a serious wound. Time for how much will happen stop chain, depends on two factors. Engine chainsaws Most modern chainsaws have a single-cylinder 2-stroke carbureted air-cooled engine …… (although there are “top models” equipped with separate oil barrels and mixing the oil in automatic mode) In order to reduce the weight of the engine in chainsaws install plastic sumps (which are not designed for continuous operation). Air filter chainsaws. Air filter on chainsaw works in special conditions. Starter chainsaws Most often, it is a rope with a handle wound on a pulley. Carburetor chainsaws this is one of the most important nodes. clutch chainsaws All modern chainsaws equipped with automatic clutch. anti-vibration system chainsaws Job chainsaws It creates vibrations that, after prolonged exposure, have a negative effect on health. Storage chainsaws After finishing work, it is necessary to prepare it for storage. Read more: http://mashom.ru/post_1351924991.html

    Installation of a shower cabin Degree of compliance with the request: 10.05%
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    .Installation shower cabins The first models of shower cubicles went on sale around the end of the 1980s.Installation shower cubicle alone was then quite a challenge. setting such a device is so simple that in the presence of little experience and free time it is possible to conduct it, moreover, independently, without resorting to the services of masters. Their setting involves the coupling of the finished structure with the lined surfaces. Therefore, for setting such tools need to be prepared by the shower. The building order and angle, a special plumb line and a pencil for marking the place will also be needed setting……For setting the shower cabin itself needs to be prepared with a saw, a puncher or a drill, mounting corners. At the moment, when everything you need is already at hand, you can also run over to direct work on setting shower stall.Installation do-it-yourself shower cabin We’ll figure out how to install a shower cabin ourselves, and the help below will help us with this. setting shower stall.Installation do-it-yourself shower stall starts with setting shower tray. details: http://mashom.ru/post_1349347087.html

    How does a chainsaw work? Degree of compliance with request: 9.36%
    Fragments of the text of the post:

    …How does it work chainsawInstallation tires and chains on chainsaw. pull the chain chainsaws turning the tensioning screw clockwise. the correct chain tension on chainsaw necessary for a long service life of the saw set, cutting accuracy and safety. Refueling chainsaws Fuel and chain oil. Hold tight chainsaw on the ground when you start the engine. Sharply pull the starter cord with your right hand until ignition.Chainsaw equipped with automatic gas control. The suction should be returned to its original position at the first ignition otherwise there will be a fuel overflow in the carburetor. Disconnect the inertial brake, raise chainsaw and press the gas several times to feel how the saw reacts to gas. You need to start sawing with the part of the tire located closer to the body chainsaws. details: http://mashom.ru/post_1353260793.html

    Design and launch of a Husqvarna chainsaw (Video) Degree of compliance with request: 5.67%
    Fragments of the text of the post:

    . device and launch chainsaws Husqvarna (Video) Purchasing chainsaw quality, reliability and ease of management are important to a person. That’s exactly what chainsaw husqvarna. Comfortable, lightweight and versatile chainsaw husqvarna is suitable for any work. so that there are no problems with interruptions chainsaws combined damper control installed. What is special about chainsaws husqvarna …… X-TORQ technology, which is a new, advanced equipment technology chainsaws. It is with the help of this technology chainsaw can make universal in every sense. In short, then chainsaw husqvarna is. Read more: http://mashom.ru/post_1351847323.html

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    Carburetor adjustment on a 4t scooter. The ignition timing is 4. How to set the ignition on the VAZ 2107 First, you need to set the ignition mark. Before embarking on to set the ignition on a scooter, you should understand that. Tell me how to properly configure. How to adjust the ignition on Chinese fuel on a scooter and moped. How does the ignition system work on. Then put the ignition in the position where the mark is on. How to remove a flywheel from a Chinese chainsaw? Welcome to. How to set up on the Chinese books. We tell you how to set up contact and contactless ignition on a motorcycle IZ Jupiter 5. Setting ignition on a chainsaw friendship4 A novelty of the famous Chinese. VAZ 2107 without resorting to paid assistance. Each owner of domestic motorcycles needs to have knowledge on how to configure the ignition on a Ural motorcycle. The ignition timing directly affects the performance of the vehicle. We put the ignition on by ear As already. Friendship or in Chinese. All Soviet motorcycles manufactured before the 90s are equipped with a contact ignition system. On the outside of the rotor housing there is a protrusion in contact with the ignition sensor during rotation. How to adjust the ignition on a Chinese scooter 150cc After the ignition is set. The article provides detailed instructions on how to set. How to set it up correctly. As already noted. Club fans of Chinese scooters. What could be easier? How to set the ignition on the VAZ 2105 is of interest to many novice motorists. Spare parts for Chinese. Ignition on a 4t scooter depends on the synchronism of movement of the shaft located in the cylinder head and magneto. Another part of the drivers of new minibikes comes to the question of how to set up the ignition on a moped even faster, as it is. Set and adjust ignition on.

    Chainsaw ignition system and its adjustment

    How to set the ignition on. Want to save this video? Is it possible to set the ignition on the machine yourself. List of Forums Beginner Section Scooter Beginner Questions. How to set the ignition on a scooter. How to set the ignition on a 4t engine, How to set the valve on. only Chinese which are written and whose size or what. I must say how to set the ignition on the VAZ 2106 is a fairly common question. Consider the method of field adjustment of ignition on. In this article, we will try to figure out how to set up the ignition in Minsk. It needs fine tuning. HOW to configure the ignition? ? ? Often how to set the ignition. Ignition marks, Chinese. Carb setting. Health check and configuration. To set the ignition on the VAZ 2107 you do not need to have a special education, enough. How to set the ignition on a scooter is an eternal question and a simple answer. People write in detail how to set the pral ignition on a 2t Chinese with a chain? ? ? The debate about which watch in the world is the most. The best Russian and Chinese. Ignition setting. How to set the clock. How to remove an arrest from a car we are writing a statement to. Ignition of outboard motors can be like with. Spare parts for Chinese. How to set the ignition on the VAZ-2106 and how. Below I will attach a video where everything is very well explained How to set up the ignition on an Alpha moped. To figure out on your own how to set the ignition on an Alpha moped according to instructions not. The ignition on the Alpha moped is adjusted similarly to the Racer and Delta models. This article details how. How to set the ignition on the VAZ 2105. How to set the plow on. Based on this, special attention should be paid to the gap between the contacts of the chopper, the adjustment of the outline and the ignition. Many owners of these mokiks experience difficulties in this matter, since the specifics of Chinese moped engines are quite different from the usual Soviet and post-Soviet models. Put on the classic contactless ignition. The thing is that with the ignition set to the lead, the spark plug gives out a spark a little earlier than the piston in the cylinder reaches the top dead center. How to set up valves on an Alpha moped yourself, and what you need to adjust the valves. It is necessary to remove the valve cover. After watching the video, you will find the answer to your question. How to adjust the valve on a moped. Set the ignition on the trimmer. How to set the ignition on. In order to set the ignition on the VAZ 2106. Do you have problems with ignition? Ignition Adjustment for Motoblocks and Ignition Installation on. Before you start trying to adjust the ignition. How to set up the ignition on a Chinese moped. Types of injectors The injector controls the fuel injection and can also control the ignition. Most of the generators that are installed on Minsk motorcycles have a mechanical ignition system. Ignition setting on. Malfunctioning Chinese ignition system. Useful Ignition Chinese. How to set the ignition on a 4t scooter? How to set the ignition on. Unsubscribe from the channel? How is the ignition. Do you have problems with ignition in the Urals? How to set up on

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    Parašė snydaddeumosfi 2018-05-21 03:33
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    Chainsaw carburetor adjustment: we analyze all the technical nuances of work

    Suburban construction and repair can not do without the use of a chainsaw, as well as garden care. Due to a malfunction of the tool, all the work can get up, so it is so important to be able to disassemble it yourself, find problems and fix them. With enough experience and dexterity, even adjusting the carburetor of the chainsaw is possible. the procedure is complex, or rather, jewelry. How to carry out adjustment procedures, we suggest that you take apart today.

    Chainsaw carburetor device

    Not a single repair measure is complete without knowledge of the fundamentals of the mechanism. Understanding the components and the principle of operation, it is easier to determine the cause of the breakdown.

    Any malfunction in the carburetor threatens to stop the engine

    The carburetor is one of the main functional parts of the engine, which serves to prepare and supply the fuel mixture, consisting of certain proportions of fuel and air. As soon as the proportions are violated. the engine begins to "junk", or even completely stops working.

    You can achieve the correct operation of the carburetor by examining its "filling":

    • Tube with transverse flap for adjusting air flow.
    • Diffuser. constriction to increase the air flow rate, located near the fuel inlet.
    • The atomizer from which the fuel is supplied (fuel needle in the diagram).
    • A float chamber that controls the fuel level at the entrance to the channel.

    Here’s how it looks in the diagram:

    The diagram shows the interaction of fuel and air flow

    Principle of operation: the air stream in the diffuser atomizes the fuel, creating a mixture entering the cylinder. The greater the amount of incoming fuel, the higher the engine speed. Carburetors of various models work according to the same scheme.

    Tips for choosing a good chainsaw for gardening here: https://diz-cafe.com/tech/vybor-benzopily.html

    When is adjustment necessary at all?

    Specifically, adjusting the carburetor of a chainsaw is required in rare cases, more often there are problems associated with fuel intake or wear of parts. But sometimes “symptoms” indicate that it is necessary to regulate the mechanism. Here are some signs:

    • After the engine starts, it immediately stalls. As an option. it won’t start at all. The reason is an excess of air and a shortage of fuel.
    • Increased fuel consumption, and as a result. a large amount of exhaust gas. This is due to the reverse process. supersaturation of the mixture with fuel.

    Video: Chainsaw carburetor adjustment: we analyze all the technical nuances of work


    The reasons for the failure of adjustment can be mechanical:

    • Due to strong vibration, the protective cap is damaged, as a result, all three bolts lose their installed fixation.
    • Due to wear on the piston of the engine. In this case, setting up the carburetor of the chainsaw will help out only for a while, it is better to replace the worn part.
    • Due to clogging caused by low-quality fuel, scale or damage to the filter. The carburetor requires complete disassembly, flushing and adjustment.

    If the chainsaw suddenly stops working, it is necessary to disassemble it to find out the reasons.

    Step-by-step disassembly instructions

    The carburetor device of models of different brands is almost the same, so let’s take the Partner chainsaw as an example. Each element is carefully removed and stacked in order, so that later it is easier to assemble.

    Carburetors of chainsaws from different manufacturers, if they differ, then not fundamentally

    The top cover is removed by unscrewing the three bolts. Following it is foam rubber, an integral part of the air filter.

    The arrows indicate the bolts that must be unscrewed to remove the cover

    Then we remove the fuel hose, followed by the drive rod.

    The upper arrow indicates the fuel hose, the lower arrow indicates the drive rod.

    Next, remove the cable tip.

    The arrow shows the tip of the cable to be removed.

    To the left of the fitting we tighten the gas hose.

    We also carefully remove the gas hose indicated by the arrow

    The carburetor is finally disconnected, it is ready for adjustment. Its mechanism is quite complicated, therefore, if further disassembly of the carburetor is required, the elements should be removed very carefully. they are small, therefore they can be lost.

    The carburetor consists of many small parts that, when disassembled, should be laid out in order

    Features of adjustment and adjustment

    To learn how to adjust the carburetor on a chainsaw, you should learn to distinguish three screws (for some models there is only one).

    Screws L and H are similar only in appearance, in fact they are different

    Each screw has its own letter designation:

    • “L” is used to set low revs;
    • "H" is needed to adjust the upper revs;
    • "T" is needed to adjust the idle speed (only one screw is present on models with one screw).

    Factory adjustment is optimal, and with the help of screws adjust the operation of the engine in special situations (work associated with different climatic conditions).

    The diagram shows the outputs of the carburetor adjustment screws with the lid closed

    A special tool is used to set up the chainsaw

    The adjustment is carried out only with screws L and N. To increase the speed, they are rotated clockwise. To lower. counterclockwise. The sequence of use of the screws: L. H. T.

    If you have doubts about the adjustment, it is better to consult a specialist, as improper tuning can damage the engine.

    Chainsaw Calm 180 Does Not Start

    BenzoPila won’t start! Fast and efficient repairs at no cost!

    MAJOR REASONS FOR NOT ENGINE PLANTS. NO SPARK ON THE IGNITION CANDLE (REPLACE THE CANDLE.

    As in the case with other saws, the carburetor plays the role of the main device that provides start-up. Considering in more detail the carburetor that the Calm 180 chainsaw is equipped with, it should be noted that it has a single tuning screw. In other words, it is a kind of idle adjustment screw. At the same time, the jet, which has a full load, is stationary all the time.

    • Speaking of saw 180, it must be said that this tool has many advantages. At the same time, this unit is not without its drawbacks. They will be given attention.
    • A common is the situation in which many owners find themselves when the chainsaw does not start calmly and fills the candle. This is usually associated with the formation of a leak of oil used to lubricate the chain. The same thing happens for the reason that over time, the area on which the hose of the oil pump and the oil tank is joined, loses its former tightness.
    • In principle, this problem is solvable, however, in order to do everything correctly, you need to consider the design of the chainsaw in question. In itself, this process provides for certain nuances, first of all, it is necessary to disassemble the unit, and without this it will be impossible to get to the required place.
    • For many owners of this saw, the relevant question is why the calm 180 chainsaw does not start? Experts give the following recommendation on this subject: the first thing to do for those who have encountered a similar problem is to open and then close the lid located on the gas tank. There is another solution. you need to pull out the candle and let it dry. You can also create the effect of artificial ventilation for the combustion chamber. Most often, these recommendations are enough to bring the device back to working condition. However, this does not always help to restore the work of the chainsaw calm.
    • If there is a spark, but attempts to start a chainsaw do not lead to anything, then in this case you need to check the supply of gasoline, an air filter, and then make sure that the spark plug is in working condition. Such manipulations must be done for the reason that most often such malfunctions are caused by contamination of the breather. And if a plug forms in it, then, naturally, a vacuum medium will be created in the gas tank, because of which fuel will not come. A similar problem can be solved quite simply, for which it is enough to remove dirt using a needle.
    • Some owners encounter such a problem when the saw itself starts up, but immediately starts to stall. Look for the reason that the saw does not start should be in the carburetor. Most likely, he managed to clog and therefore does not allow the instrument to work properly.
    • To make sure that the cause of the malfunction is not the breather, and it is in working condition, you must first disconnect the fuel hose from the carburetor, and then find out if there is a fuel leak.
    • Keep in mind that for a normally working chainsaw a natural phenomenon is the presence of a dense and stable stream of gasoline. In addition, it is often possible to observe a situation when the chainsaw calm 180 does not start up hot and immediately stalls at the same moment or after some time. Typically, such a malfunction is associated with a silencer. Most likely, it has accumulated a lot of deposits associated with the long-term operation of the tool, which is usually accompanied by the formation of exhausts.
    • At the same time, the saw may stop starting if the tool chain is poorly lubricated. Channels having a plug can contribute to this, or the cause should be sought in an oil pipe that has a leak.
    • A serious problem can be leaks in the connecting pipes or at the installation site of the oil pump fittings.
    • There are cases when the chainsaw calm 180 begins to stall due to a failed cylinder. To make sure whether this is actually so, it is enough to conduct an inspection. If as a result of the examination you find irregularities and chips, then this is a clear sign of damage.

    Video: Chainsaw Calm 180 Does Not Start


    STAFF 170/180 DOES NOT START. CAUSES.

    MAJOR REASONS FOR NOT ENGINE PLANTS. NO SPARK ON THE IGNITION CANDLE (REPLACE THE CANDLE.

    As in the case with other saws, the carburetor plays the role of the main device that provides start-up. Considering in more detail the carburetor that the Calm 180 chainsaw is equipped with, it should be noted that it has a single tuning screw. In other words, it is a kind of idle adjustment screw.

    In other words, the adjustment in relation to him is not applicable. In turn, there is no way to influence the full load in any way. You also need to pay attention to the factory settings, because of which the supply of the air-fuel mixture is carried out directly to the engine. over, this principle is maintained regardless of the operating conditions of the tool.

    • Speaking of saw 180, it must be said that this tool has many advantages. At the same time, this unit is not without its drawbacks. They will be given attention.
    • A common is the situation in which many owners find themselves when the chainsaw does not start calmly and fills the candle. This is usually associated with the formation of a leak of oil used to lubricate the chain. The same thing happens for the reason that over time, the area on which the hose of the oil pump and the oil tank is joined, loses its former tightness.
    • In principle, this problem is solvable, however, in order to do everything correctly, you need to consider the design of the chainsaw in question. In itself, this process provides for certain nuances, first of all, it is necessary to disassemble the unit, and without this it will be impossible to get to the required place.
    • For many owners of this saw, the relevant question is why the calm 180 chainsaw does not start? Experts give the following recommendation on this subject: the first thing to do for those who have encountered a similar problem is to open and then close the lid located on the gas tank. There is another solution. you need to pull out the candle and let it dry. You can also create the effect of artificial ventilation for the combustion chamber. Most often, these recommendations are enough to bring the device back to working condition. However, this does not always help to restore the work of the chainsaw calm.
    • If there is a spark, but attempts to start a chainsaw do not lead to anything, then in this case you need to check the supply of gasoline, an air filter, and then make sure that the spark plug is in working condition. Such manipulations must be done for the reason that most often such malfunctions are caused by contamination of the breather. And if a plug forms in it, then, naturally, a vacuum medium will be created in the gas tank, because of which fuel will not come. A similar problem can be solved quite simply, for which it is enough to remove dirt using a needle.
    • Some owners encounter such a problem when the saw itself starts up, but immediately starts to stall. Look for the reason that the saw does not start should be in the carburetor. That chainsaw calm 180 does not start. And floods the candle. The chainsaw will not start. Most likely, he managed to clog and therefore does not allow the instrument to work properly.
    • To make sure that the cause of the malfunction is not the breather, and it is in working condition, you must first disconnect the fuel hose from the carburetor, and then find out if there is a fuel leak.
    • Keep in mind that for a normally working chainsaw a natural phenomenon is the presence of a dense and stable stream of gasoline. In addition, it is often possible to observe a situation when the chainsaw calm 180 does not start up hot and immediately stalls at the same moment or after some time. Poor start on why it does not start; the chainsaw calm 180 may not start. Typically, such a malfunction is associated with a silencer. Most likely, it has accumulated a lot of deposits associated with the long-term operation of the tool, which is usually accompanied by the formation of exhausts.
    • At the same time, the saw may stop starting if the tool chain is poorly lubricated. Channels having a plug can contribute to this, or the cause should be sought in an oil pipe that has a leak.
    • A serious problem can be leaks in the connecting pipes or at the installation site of the oil pump fittings.
    • There are cases when the chainsaw calm 180 begins to stall due to a failed cylinder. To make sure whether this is actually so, it is enough to conduct an inspection. If as a result of the examination you find irregularities and chips, then this is a clear sign of damage.

    The chainsaw does not start or starts poorly. Cause and how to eliminate.

    Read:

    Why the chainsaw does not start. Reason: How to fix it.

    Chainsaw Calm 180 Does Not Start

    BenzoPila won’t start! Fast and efficient repairs at no cost!

    Candles for chainsaws here On the development of the channel.

    How to Remove Clutch on Any Brand Chainsaw

    One of the most important parts of any model of the device is the clutch. This mechanism requires constant monitoring of correct operation. Periodically, it must be removed for inspection and necessary repairs. How to remove the clutch on a chainsaw of any brand correctly and how it is arranged, we will understand below.

    How to Remove Clutch on Any Brand Chainsaw

    How is a chainsaw

    All types of units are driven by a gasoline internal combustion engine. When assembling, single-cylinder engines are installed in which high-octane high-quality gasoline is refueled. Instead of the gearbox, a single-stage gear is used, which makes the chain move. The structure of the unit due to its simplicity allows it to work flawlessly in any conditions. The unit device consists of such parts:

    • ICE single cylinder;
    • Gas tank;
    • Carburetor
    • Crank mechanism;
    • Clutch;
    • Saw chain and sprocket driving it.

    In addition, there are such components:

    • Purification system for the air supplied to the carburetor;
    • Ignition mechanism;
    • Exhaust silencing system;
    • Emergency shutdown system in emergency situations.

    In the photo you can see a variety of models from the manufacturers of Calm, Husqvarna, Partner, Goodluck.

    How is the engine of the chainsaw

    In devices released recently, a single-cylinder two-stroke carbureted engine is installed. It includes several mechanisms that work seamlessly. The main components of the engine:

    • Flywheel;
    • Coupling;
    • Incendiary module;
    • Muffler;
    • Mounting sleeve.

    The engine installed in the saw operates at a frequency of 13.5 thousand revolutions / minute, and therefore it requires processing with high-quality oil. A high level of system cooling during operation is required. The engine of the unit is equipped with a cooling system that delivers air for cooling systems.

    Video: How to Remove Clutch on Any Brand Chainsaw


    Chainsaw Clutch

    The clutch of the wood processing device is centrifugal and is automatically activated when the degree of engine speed changes. If the speed is small, then the elements of the mechanism are pressed against the shaft. So the rotational motion is not transmitted to the sprocket. With increasing revolutions, the elements diverge and are pressed against the drum, thus causing the chain to rotate.

    A characteristic property of this type of device is braking during chain deceleration. So it turns out to avoid some damage. But nevertheless, this system is subjected to a huge load, so it is necessary to systematically carry out preventive inspection and repair.

    How to take off

    The drive sprocket also serves as a drum. One of the main reasons for the breakdown of this block is the grinding of the sprocket teeth. In the monolithic version of the drum, the chain can cut the sprocket during operation. Such a mechanism requires replacement. In the case when the drum has a removable crown, it must be removed and replaced during maintenance. After that, the drum can function further.

    When there is a need for repair, you need to seek help from a service center where experienced specialists work. But if there isn’t one nearby, the question arises. how to remove the clutch yourself? If you have the necessary set of tools, you can easily implement your plan. Of course, there are some differences in the models of different companies, but the disassembly scheme remains unchanged:

    • First, the chain brake cover is removed by turning the lever. Slightly twist nuts to loosen chain tension. After loosening, you can completely unscrew the nuts and remove the cover;
    • The chain and the guide bar are disassembled, as well as the mechanism is cleaned of dirt;
    • The cylinder head candle is turned out and the piston is fixed. To do this, the crankshaft should be rotated until the outlet opens and then a piece of rope is placed in the cylinder to lock the piston. After completion of work, the rope is removed from the mechanism;
    • The nuts on the clutch are unscrewed with the special wrench from the kit. In this mechanism, they are made with left-hand thread, and this must be taken into account during dismantling. After that, the mechanism is disassembled, and all its parts are inspected for damage. Worn parts must be removed and replaced with new ones.

    After repair and replacement of parts, it is necessary to assemble in the reverse order. The disassembly process is presented in more detail in the video.

    To independently repair such chainsaws as Calm, Husqvarna, Partner, Goodluck, you need to know some features of the models. For example, on some varieties of saws, a washer is installed (between the cup of the drive sprocket and the engine). During assembly, it must be installed in its original place.

    If the model has a special spring that transmits rotation to the pump drive, it is crucial that it is properly installed after repair. Otherwise, the device may be seriously damaged. After preventive and repair work, it is necessary to check whether the mechanisms are working properly.

    Chain For Chainsaw. Tension, Sharpening, Maintenance

    Before starting work, an experienced owner of a chainsaw should check the state of chain tension, since not only the performance of the sawing process depends on its state, but also safety. Chainsaw tension plays an important role, and if it is not produced enough, then with a high probability the chain can fly off the tire or break. In the case of excessive constriction, increased pressure will be observed on the engine of the tool and, as a result, its rapid failure. In addition to its direct function. sawing wood, the chain holds the tire, which vibrates when the chainsaw is idling.

    How to pull a chain on a chainsaw yourself?

    To find out the degree of tension, just grab two fingers on the tooth of the chain located in the middle on top of the tire and pull it up. With proper adjustment, a third of its tail will be in the groove of the tire, and an excess or shortage of this indicator indicates the need for tuning. An important factor is the free movement of the chain without jamming in the tire, which can be checked by scrolling it in the tire.

    When diagnosing the degree of chain tension of a chainsaw, it is worth observing safety precautions. In order to prevent damage to the fingers, you need to wear cotton gloves with a rubberized surface inside. All adjustment and adjustment work should be carried out with the engine turned off.

    The process of adjusting the degree of tension is not time-consuming. It is enough just to learn a certain sequence of actions, having performed correctly which can achieve the optimal result. Before starting work, make sure that the saw motor is turned off and that it cannot be accidentally started. A strong sagging chain from the bottom indicates a significant weakening. Often this factor is key in diagnosing the state of tension.

    Chain For Chainsaw. Tension, Sharpening, Maintenance

    Chainsaw Chain Adjustment

    The tensioning mechanism is located under the side cover of the drive sprocket for the chainsaw. Often, it is an ordinary bolt, when twisting which the chain loosens and vice versa, it stretches when it is twisted. Some models are equipped with a unique chain adjustment system, which does not involve the use of any bench tools.

    To directly adjust the chain, you will need to loosen the screws that secure the bus to the main unit. To move the tire to or from the sprocket, use the adjusting screw. After finding the optimal chain tension of the chainsaw, tighten the bolts holding the tire and check the ease of moving it into the groove of the tire. In the case of proper adjustment, the chain will move smoothly without jerking.

    It is important to remember that all manipulations with the chain should be carried out when it is completely cooled, since the metal tends to expand when heated and decrease in volume with decreasing temperature. Neglect of this factor can lead to warping and deformation of the chain.

    How to sharpen a chain of a chainsaw yourself?

    Undoubtedly, with proper operation and timely sharpening, the life of the chain increases several times. There are several main signs that govern the need for sharpening the chain:

    • increasing feed force during sawing;
    • small shavings of a darker color;
    • visual diagnostics.

    The main elements of the cutting edge with signatures

    Video: Chain For Chainsaw. Tension, Sharpening, Maintenance


    To process the tooth, you need a round file, to which a holder is attached to indicate the correct sharpening. In order to sharpen the chain of the chainsaw, many fellers and owners of gas tools currently use machine tools or hand tools. Before starting work, it will not be superfluous to get acquainted with the structure of the teeth. Each of them consists of a top and side cutting edge. To give them optimal cutting properties, it is necessary to maintain the grinding angle set by the manufacturer. The rear corner of the upper cutting part is used for cutting into a tree and with its help chip cutting occurs. The limits of this angle range from 50 to 60 °, while the front is in the range of 60-85 °.

    Key points of chainsaw sharpening

    To determine the front and rear angles of the cutting edges, you can measure the distance from the top of the tooth to the guide rail. This parameter determines the sawing speed when working with softwood.

    The distance between the cutting edge and the depth gauge

    In order to establish the optimal thickness of the cut chips, it is recommended to set the distance of the depth gauge to within 0.5 to 0.8 mm. Otherwise, during the cutting process, there will be increased vibration on the hands of the feller and recoil. If the distance value is lower than the specified value, the performance of the chainsaw will drop significantly, which will lead to increased fuel consumption and intensive wear of the cutting edges.

    Before sharpening the chain of the chainsaw at home, we recommend that you familiarize yourself with the basic rules.

    When working with a file, you need to remember that its upper edge should protrude 1/5 of the diameter of the upper part of the tooth.

    The choice of a file depends on the pitch of the chain and on the performance of the cutting edges and for proper sharpening it is placed at 90 ° to the vertical and 30 ° (10 °) to the horizontal plane. Of course, accurately determining the angle of sharpening by eye is problematic, because experts recommend using special devices.

    Step-by-step sharpening instructions

    For ease of operation, you must first firmly fix the tire.

    Sharpening a chainsaw with a round file with pliers

    The movement of the tool along the edges should be smooth and performed on their own. In order to prevent intensive wear of one working part of the file for the chainsaw chain, it is necessary to turn it by 60-90 ° from time to time. In the process of sharpening, cutting edges of one direction are primarily processed. In order for all the teeth to have a more or less the same degree of sharpening, the reciprocating file should be made at a constant pressure.

    Sketch template for sharpening chainsaw chains

    To reduce the level of the depth of cut limiter, a special template is required, which is located in the slot of the chain. The tip protruding beyond the cuts is sawn off using an ordinary flat file. If the upper and lateral edges have lost their shape or touched the ground, then it is necessary to use a specialized electric or manual machine.

    Chainsaw Chain Maintenance

    The performance and durability of a chainsaw depends on the following factors:

    1. Compliance with the rules of operation of the unit;
    2. Timely sharpening of the cutting edges of the chain;
    3. Adjust the degree of tension.

    General view of the chainsaw chain on the top of the tire

    If the correct tension significantly affects the performance of the entire tool, then competent sharpening of the teeth. on productivity. Therefore, special attention must be paid to this moment. If the angle of sharpening the chain of the chainsaw is observed, then the cut is obtained not only faster, but also better. Manufacturers do not set specific standards for servicing the chain, but professionals advise performing this operation at least once per shift. Indeed, in the case of intensive sawing, the cutting edges are subjected to mechanical and high-temperature influences that have a negative effect on the metal.

    The need to sharpen the chain can be determined by the "behavior" of the tire: when the edges wear, it will be "led away" to the side.

    In addition, chip heterogeneity, i.e. it becomes smaller and takes on a darker shade.

    With the correct sharpening of the chainsaw chain and regular checking of the tension state, the tool will serve you for many years.

    DIY Chainsaw Carb Adjustment

    Adjusting the carburetor of the chainsaw ensures efficient operation of the tool at full power with economical fuel consumption. Adjustment should be made with a clean fuel and air filter. For a larger number of carburetors, the adjustment is carried out by three screws: for maximum and minimum speed and idle adjustment.

    DIY Chainsaw Carb Adjustment

    Screws H and L adjust the ratio of the gasoline-air mixture determined by the opening of the carburetor throttle. When the screws are loosened, the mixture is enriched, and the revolutions accordingly fall; when the screws are twisted, the mixture becomes leaner. the revolutions increase.

    The designation H refers to the maximum speed screw controlling the main jet, L. to the minimum speed screw controlling the idle jet. Screw S provides precise idle speed control. Sometimes, to simplify the adjustment, the number of carburetor adjusting screws available is reduced.

    Setting the carburetor of the chainsaw is divided into two stages. the basic (factory settings), carried out with the engine turned off, and the final, made with the engine running warm. The exact angle of rotation should be taken from the operating instructions for the particular chainsaw. Failure to follow the manufacturer’s instructions could result in engine damage.

    Video: DIY Chainsaw Carb Adjustment


    Basic carb adjustment.

    The adjusting screws for the maximum H and minimum L revolutions are slowly turned clockwise until they stop, after which they are turned back 2 turns, other settings are also possible

    Check and adjustment of idling.

    We find the highest idle speed, for this, slowly turn the screw L in different directions. After finding the position of the highest engine speed, turn screw L 1/4 turn counterclockwise. If the chain rotates at idle, screw T or (S) should be turned by turning it clockwise until it stops.

    Checking and adjusting the maximum speed.

    Changing the maximum number of revolutions is carried out by screw H. When it is screwed in (clockwise rotation), the revolutions increase, when inverted. are decreasing. Chainsaw engines have the highest rotation speed of 11,500 rpm. up to 15000 rpm Ignition does not provide a higher speed, in addition, it becomes dangerous for the engine. The maximum speed can be determined by interruptions in the ignition. If they come, turn the screw H slightly counterclockwise.

    If the engine is not tested for acceleration and maximum speed, then the adjustment of the chainsaw cannot be considered complete.

    With a smooth pull of the gas trigger, the engine must confidently and quickly gain speed from idle to maximum (from 2800 rpm to 11500-15000 rpm, depending on the unit). If the speed is slow, delayed, screw L must be slowly turned out counterclockwise, but no more than 1/8 turn.

    After adjusting the acceleration and maximum revolutions, you should again check the operation of the saw at idle. the engine must run stably, the chain must not move. Chainsaw setting should be repeated if this condition is not met but with the exception of the basic adjustment step.

    Do-it-Yourself Chainsaw Repair: Understanding the Main Breakdowns and Techniques to Fix Them

    Do-it-Yourself Chainsaw Repair: Understanding the Main Breakdowns and Techniques to Fix Them

    It would seem, why a chainsaw to a summer resident, who is engaged in the cultivation of vegetables and fruits, or to the owner of a country house, which has a small garden and several flower beds? The question disappears when there is a desire to build a bathhouse, to renew a greenhouse, to tumble down an old business or just to make a bench for rest. Unfortunately, any mechanism periodically needs to be prevented and parts replaced, and for this it is necessary to understand the device’s structure well, besides, repairing a chainsaw with your own hands will save time and money.

    Structural components of chainsaws

    All chainsaws are similar in structure, regardless of whether they are European-made (ECHO, Stihl, Husqvarna) or domestic (Cedar, Ural). The main elements are located inside the case. a fuel tank and an engine, and outside the starter, handle, saw part (tire) with a chain. A sharp jerk of the cable starts the engine, and that. the saw blade.

    To get started, we suggest you familiarize yourself with the video clips that show how the chainsaw is arranged and how it works:

    From time to time, malfunctions occur in the saw, which requires disassembly. What can happen with such a simple mechanism as a chainsaw? At least the following:

    • Ceases to start;
    • Starts up, but soon stops;
    • It ceases to function in the cut;
    • Loses its power;

    Most of the problems are associated with interruptions in the engine (fuel supply system, exhaust system, ignition, cylinder-piston part), or with malfunctions of other systems and components (clutch, chain brake, tire, lubrication system). Consider the most common breakdowns and methods for eliminating them.

    A working chainsaw starts up with one jerk and does not fail to cut

    Ignition System Check

    The first thing to do when a chainsaw breaks down is to inspect the spark plug by disconnecting the wire and carefully twisting it with a special key.

    Components of the ignition system of a chainsaw: 1. flywheel with magnets, 2. ignition module, 3. spark plug, 4. high voltage wire

    Unscrew the spark plug to check its condition.

    Her appearance says a lot:

    • Dry. Most likely, the fuel mixture does not get into the cylinder. It’s not the ignition system, so the candle is screwed back.
    • Heavily splattered with fuel. The reason for the excess fuel mixture lies either in violation of the start rules, or in the incorrect carburetor adjustment. Wipe the candle thoroughly, shut off the fuel supply and turn on the starter to remove excess fuel and ventilate the combustion chamber. Then the candle is put in place and the mechanism is started again.
    • It was covered with black soot. This may indicate the use of low-quality oil, an incorrectly adjusted carburetor, or an incorrectly calculated ratio of gasoline to oil. The candle should be washed, cleaned of carbon deposits with a sharp object (with an awl or a needle), wipe the electrodes with a skin and put in place.

    When checking the candle, you need to pay attention to the gap between the electrodes: from 0.5 to 0.65 mm is considered normal. Damaged or worn gaskets must be replaced.

    A large amount of black soot on the spark plug indicates engine malfunctions

    For complete certainty, the presence of a spark should also be checked. To do this, put the ignition cable on the candle, connect the candle nut and cylinder with pliers, start the starter and watch for the appearance of a spark. If it is absent. the candle needs to be replaced. If the new candle also does not give out sparks. the problem is in the high-voltage wire or in the failure to connect to the candle.

    Video: Do-it-Yourself Chainsaw Repair: Understanding the Main Breakdowns and Techniques to Fix Them


    Fuel supply system repair

    Fuel may not enter the cylinder for the following reasons:

    • Fuel filter contamination. Remove the fuel hose and check for fuel leaks. If the jet is weak, you may need to clean the filter. It is taken out through the filler hole of the fuel tank and cleaned, in case of severe contamination it is replaced with a new one. As a preventive measure, it is recommended to replace the fuel filter every three months.
    • Clogged breather (holes in the fuel tank cap). Also check by disconnecting the hose, in case of blockage, clean with a needle.
    • Lack or insufficient amount of fuel. There may be several reasons for the malfunction. The first reason is clogged air filter. The air ceases to flow into the carburetor in the right amount, in this regard, due to too rich fuel mixture, the engine is disrupted. The contaminated filter is carefully removed, cleaned and washed in water, then dried and replaced.

    Another reason is the incorrect carb adjustment. Adjustment is made by three screws.

    Timely replacement of the fuel filter ensures full fuel supply

    The fuel hose and choke drive must fit snugly against the fittings.

    The throttle control lever cable must be in place

    During operation, you must use the instructions, otherwise you can only make it worse.

    And the last reason is a violation of the integrity of the membrane or clogging of the carburetor channels.

    To repair the carburetor yourself, you need to get acquainted with all its details

    All parts must be clean, dry and intact.

    Dismantling and cleaning the silencer

    If the engine works fine at low revs and starts to stall at high revs, the cause may be covered in a silencer spark arrestor, clogged with combustion products.

    • remove the muffler;
    • disassemble (there are non-separable models);
    • clean off deposits using detergents;
    • blow dry;
    • set in place.

    Dry cleaning is unacceptable, as there are carcinogens in the tan, inhalation of which is hazardous to health. After removing the muffler, the outlet is closed with a clean rag.

    Chainsaw malfunctions indicate possible muffler clogging

    To prevent clogging of the muffler, it is necessary to monitor the composition of the fuel mixture. The amount of oil must not exceed the norms recommended by the manufacturer. Poor oil quality also negatively affects engine performance.

    Assessment of the condition of the cylinder-piston group

    Often the engine does not start or does not work at full strength due to low pressure in the cylinder. It can be caused by wear of the piston or cylinder, dropping of the piston rings, wear of the bearings. Partially consider the state of the cylinder-piston group (CPG) is possible by removing the muffler and looking into the opening.

    A compressometer placed in the candle hole will help to measure the compression in the engine. according to the results of the measurement, you can also talk about the state of the CPG. Accurate data is obtained only after the complete disassembly of the mechanism. If the piston has chips or scratches, it must be replaced. The piston ring must be clean, without carbon deposits, and be exactly in place.

    Wear on the piston and crank mechanism is a serious problem.

    According to the results of measuring compression, you can judge the state of the parts of the CPG

    Repair chain lubrication system

    We will consider three main malfunctions:

    • Oil leakage. Check whether the pipes are tightly connected to the pump fittings and if there are any cracks on them. Problem tubes are sealed or replaced.
    • Inadequate oil intake. Most likely, the lubrication channels are clogged.
    • Cracks in the oil pump housing. Part replacement required.

    Material will also be useful on how to sharpen a chain of a chainsaw: https://diz-cafe.com/tech/kak-zatochit-cep-benzopily.html

    Here’s how to diagnose a lubrication system:

    Chain brake adjustment

    The chain brake often does not work due to clogged grease or sawdust brake tape and the space under the cover. All parts should be cleaned of blockages. Perhaps the tape has simply worn out, then it needs to be replaced.

    The chain brake is restored by mechanical cleaning.

    Some parts of the chainsaw wear out faster than others. These include the drive sprocket, tire, chain, anti-vibration elements. For quick replacement, it is best to always have spare parts at hand. Do not neglect the sharpening of the chain.

    How to Grind a Chainsaw Chain With Your Hands?

    Hello everyone! In this article I will tell you how to sharpen a chain of a chainsaw at home.

    For this, you should use a special tool for sharpening a chain of a chainsaw. a round file of a suitable diameter or an electric machine.

    Sharpening with a file is more correctly called editing. The chain is sharpened with a file using templates with or without rigid fixation. In the case of rigid fixation, if the chain does not pass by accident, for example, through nails, then you can do without sharpening at all on an electric machine. When using files without rigid fixation, after 8-10 edits, the chain should be sharpened on an electric machine, since the cutting angles are gradually knocked down even if the editing was carried out by a person with the hardest hand.

    Sharpening the chain on an electric machine immediately, as soon as it is slightly dull, is not recommended, since with such sharpening a sufficiently large part of the cutting tooth is “eaten”. the chain in this case will serve much less than it could. Sharpening on the machine also needs to be carried out if the chain went, for example, on the same nails. In this case, to straighten the tooth with a file is unlikely to succeed.

    120 varieties of chainsaws at very competitive prices. Click to view

    The following recommendations apply naturally to electric chain saws.

    How to sharpen a chain of a chainsaw with a file

    In order to sharpen a chain on a chainsaw with a file, you will need, in fact, a round file of the required diameter, a template for the correct determination of the angle of sharpening, as well as a template and a flat file for grinding the cutting depth limiter (guide tooth).

    How to Grind a Chainsaw Chain With Your Hands?

    Sharpening set: round file with a template, flat file, template for grinding the depth of cut saw

    1. Without removing the chain from the chainsaw, we apply a round file to the cutting tooth, observing the desired sharpening angle, and draw the tooth 2-3 times in the direction “away from you”. If you press the file to the tooth when it moves in the direction “toward you”, it will roll and stop grinding. Therefore, in order to sharpen it correctly, we press it only when moving “away from you”.

    File sharpening without rigid fixation

    The correct angle when sharpening using a non-fixed template, we look at the risk applied to it. it should be parallel to the tire chainsaw. The angle of sharpening should be 30 degrees for transverse sawing, and 10 degrees for longitudinal. It is more convenient to first grind all the teeth of the chain looking in one direction, and then go through the teeth looking in the opposite direction.

    When using a rigidly fixed guide template, it is fixed on the tire of the chainsaw and does not allow the file to go sideways. the quality of editing in this case, as was said at the beginning, does not suffer from hand shake. Next, the desired angle is set and other actions occur as well as with the non-fixed template.

    Video: How to Grind a Chainsaw Chain With Your Hands?


    Rigid chain sharpening

    It is also worth noting that there are such devices for editing with a file, when using which the chain will need to be removed from the chainsaw.

    Editing a chain with a file and removing it from a chainsaw

    2.Now we take a template and a flat file for grinding the guide tooth. To do this, put the specified template on top of the cutting tooth so that the guide tooth protrudes into the slot on the template. With a flat file, grind the part of the guide tooth sticking out of the template. This is done to maintain the required height difference between the cutting and guide tooth of 0.65 mm. Usually, such a procedure should be carried out after 4-6 edits, since the cutting tooth does not grind very much with a file for one or three edits, in order to decrease much in height.

    Grinding depth limiter (guide tooth)

    Diameters of files for chains with a certain step:

    Sharpening the chainsaw chains on the machine

    When the chain is sharpened for a chainsaw by an electric machine, it is removed from the chainsaw itself. Further, everything will depend on the type of machine. There are varieties that generally do not require human involvement in the grinding process, but such devices are too expensive. Usually the process is as follows.

    Sharpening a chain on an electric machine

    The chain is installed in the existing slot on the machine bed with the guide tooth towards the operator. Next, the bed is rotated at the angle at which sharpening is necessary. for this, risks must be applied to it. With a special emphasis that is applied to the back of the cutting tooth, the tooth itself is adjusted under the working disk so that when it is lowered, it “eats” as little as possible from the tooth, but at the same time that it is sharpened completely, without leaving pits and cavities.

    Sharpening a chain on an electric machine in process

    It is advisable to find the most “eaten” tooth on the chain, put an emphasis under it, and grind all the other teeth in this setting. However, few people bother with this. Usually they align on the first tooth that comes across and sharpen it all the others. And if you get a tooth to which such a setting does not provide complete sharpening, then align it, and then sharpen the remaining links according to the new setting. But, again, to correctly configure the machine precisely for the smallest tooth on the chainsaw chain.

    You should also set the maximum depth to which the working disk will lower. This is done using the regulator, which is usually located on the back of the machine.

    We sharpen the teeth, bringing each under the working disk, and do not forget to tighten each sharpened link with a special side clamp so that it does not “walk”.

    So they go first along the teeth of the chain directed in one direction, and then for the other side they again adjust the machine according to the smallest tooth and sharpen the teeth on this side.

    In order not to start sharpening the teeth in the second circle, you can mark the first sharpened tooth with a marker.

    After such sharpening, again you need to go through the cutting depth limiters (guide teeth) with a flat file with the appropriate template to give the necessary difference in height between the guide and cutting tooth on the link.

    Thus, in order to properly sharpen the chain on the chainsaw, follow the above instructions and you will succeed.

    Do-it-yourself Chainsaw Repair

    All malfunctions of chainsaws can be divided into two main groups: malfunctions of the engine with all its components and systems (ignition, fuel supply system, cylinder-piston group, exhaust system) and malfunctions of other components (chain brake, lubrication system, clutch, tire, etc.).

    Engine malfunctions

    • The engine will not start;
    • Starts up, but stalls;
    • unstable;
    • does not develop power, i.e. normally works at idle, but stalls under load.

    When repairing a chainsaw with your own hands, you need to act by the method of exclusion. check in turn all possible causes of the malfunction, starting with those that take less time to check and eliminate (see here for the design and operation of a two-stroke engine).

    Ignition system. Almost all types of engine malfunctions listed above can be caused by ignition system malfunctions. Therefore, when they occur, it makes sense to start troubleshooting with a candle. This is all the more justified because the state of the latter can provide useful information about the operation of the fuel system. So, if a problem occurs, you need to turn out the candle and inspect it.

    The wire is disconnected, and the candle is twisted with a special key.

    If the candle is dry, it means that the problem is most likely not in the ignition system, but in the fuel mixture not entering the cylinder. You can wrap the candle back and take up the fuel system. If the candle is heavily sprayed with the fuel mixture, then there is an excess of it. This may occur due to misregistration of the carburetor or violation of the start rules. The candle is wiped and dried, the cylinder is drained, cutting off the fuel supply and working as a starter. to vent the combustion chamber and remove excess fuel. Then install the candle in place and repeat the launch.

    The presence of a large amount of black soot also indicates a malfunction in the fuel system.

    The ratio between oil and gasoline in the mixture may be violated, the carburetor is not adjusted, or poor-quality oil is used. The candle is washed in gasoline, cleaned with a needle or an awl of carbon deposits, clean the electrodes with a fine sandpaper and put in place.

    In all these cases, it will not be superfluous to check the gap between the electrodes of the candle. Depending on its brand, it should be in the range of 0.5-0.65 mm. It is necessary to check the sealing gasket of the candle. If it is worn or damaged, the tightness of the combustion chamber may not be ensured, which leads to a decrease in compression in the cylinder and problems in the engine.

    Even if in the case of checking the spark plug there is good reason to believe that the fault is in the fuel system, you need to check the spark plug for a spark. At least in order to be sure that everything is in order with this. For this:

    • put on the spark plug cable;
    • using pliers with insulated handles, thread or nut the candles onto the cylinder;
    • pull the starter handle and look. there is a spark or not.

    If there is no spark, you just need to replace the candle. If the new candle does not have a spark, it is necessary to check the condition of the high-voltage wire for an open and contact with the candle.

    The reason for the absence of a spark can also be a faulty ignition module or a violation of the gap between it and the flywheel magnetic circuit. It should be 0.2 mm. Violation of the gap becomes especially likely if before that the saw was disassembled with the flywheel and the ignition module removed. The clearance is set using a 0.2 mm thick gasket placed between the flywheel boss and the ignition module. Defective ignition module must be replaced.

    Having checked the ignition system in this way and not having detected a malfunction, we can proceed to the fuel mixture supply system.

    Fuel supply system. If inspection of the spark plugs found that fuel does not enter the cylinder, you need to consider all the possible reasons for this. It could be:

    • the fuel does not flow from the tank due to a clogged hole in its cap (breather), while a vacuum is created in the tank that prevents fuel from flowing out;
    • contamination of the fuel filter installed in the tank;
    • not receipt or insufficient intake of the fuel mixture from the carburetor into the cylinder.

    To diagnose the first two reasons, it is enough to disconnect the fuel hose from the carburetor and see if fuel flows out of it or not. If it flows fully, the breather and filter can not be checked, if it does not or weakly flows, we can assume that the cause of the malfunction is found. The breather is cleaned with a needle. The fuel filter is removed through the filler hole of the empty fuel tank with a wire hook, together with a suction hose, from which the filter is disconnected and cleaned or replaced with a new one. Chainsaw manufacturers recommend changing the fuel filter every 3 months.

    Video: Do-it-yourself Chainsaw Repair


    Inadequate intake of the fuel mixture from the carburetor into the cylinder or a violation of the correct ratio between fuel and air mixed in the carburetor can occur for several reasons: due to clogging of the air filter, unregulated carburetor, clogging of its channels or mesh filter.

    As a rule, repairing chainsaws is not complete without cleaning the air filter, since it gets dirty quite quickly. When this happens, air intake to the carburetor decreases, the fuel mixture at the outlet of it turns out to be too enriched, which disrupts the normal operation of the engine. Carefully remove the dirty filter for cleaning so that dirt does not get into the carburetor. The filter should be cleaned or washed in water with some detergent, dried and installed again.

    The carburetor’s misregistration is eliminated by its adjustment. This is usually done with three screws. maximum and minimum idle speed and propeller. Adjustment must be carried out in strict accordance with the instructions, non-observance of which can lead to engine damage. Some saw manufacturers leave only one adjusting screw (idle). to exclude unwanted interference by inexperienced users in the carburetor. For an example of adjusting the carburetor of a chainsaw, see the article Working with a chainsaw.

    If the carburetor adjustment did not help, you need to clean its channels and filter mesh, and at the same time check the integrity of the membrane. Carburetor. one of the most complex chainsaw devices, so proceed with disassembling and cleaning it with a full understanding of the responsibility of this operation. It consists of many small parts that have the peculiarity of quietly popping out of their seats and irretrievably lost, so that, having disassembled this capricious device, you can not assemble it.

    Below is a diagram of another carburetor chainsaw.

    If there is no experience and self-confidence, it is better to entrust the repair of a chainsaw carburetor to a service center specialist. Sometimes for high-quality cleaning of the carburetor it is necessary to apply ultrasonic cleaning.

    Muffler. Often the cause of engine malfunctions, especially when the engine is operating normally at low revs and stalls under load, becomes clogging of the silencer’s spark arrester, which prevents normal exhaust, from the combustion products. Repair in this case consists in removing the muffler, disassembling (if it is collapsible) and wet cleaning it from soot using detergents. The non-separable muffler is washed with a hairdryer after washing. Remember that soot contains substances that are carcinogens, and dry cleaning, which may cause inhalation, is unacceptable. When removing the muffler, the engine outlet is plugged with a clean rag.

    One of the reasons a muffler may clog. this is the use of a fuel mixture with an excessive amount of oil (the amount of oil is more than recommended by the manufacturer), and the use of either non-suitable oil for two-stroke engines or low-quality oil.

    Cylinder piston group. Failures of the cylinder-piston group are the most serious. This is the deterioration of the cylinder and piston, scratches and seizures on their surface, wear or sinking in the grooves of the piston rings, wear of the crankshaft bearings. Most of these malfunctions lead to a drop in pressure in the cylinder and, as a consequence, to the inability to start the engine, or its inability to give full power. There are several ways to assess the status of a cylinder-piston group (CPG).

    You can remove the muffler and look through the opened window, in which a part of the side surface of the cylinder is visible. Despite the limitations of the review, a general idea of ​​the state of the CPG in this way can be obtained.

    It is useful to measure the compression in the engine, which is quite informative regarding the condition of the parts of the CPG. The operation is performed using a compressor installed in the candle hole.

    Do-it-yourself Chainsaw Repair

    The crankshaft is rotated using an electric motor (drill) with a flexible shaft or manually starter, while controlling the pressure on the pressure gauge. The last for a workable chainsaw should be at least 8-9 atm (0.8-0.9 MPa). With its decrease, engine power also drops. At a pressure of 5 atm, the engine may perhaps work, but only at idle.

    Accurately assess the state of the CPG can only be fully disassembled the engine. disconnecting the crankcase from the cylinder and removing the piston. If the latter has scuffs, chips or deep scratches, it must be changed. In relation to the cylinder, when developing or damaging the surface, it is possible to squander it under the repair size. The reason for the low compression may be the wear or coking of the piston ring. The serviceable ring should be clean of carbon deposits, sit in the piston groove freely and firmly pressed against the inner surface of the cylinder.

    Chain lubrication system

    With a significant (small is considered normal) oil leakage, it is necessary to check the tightness of the pipe connections to the pump fittings. They may fall or crack. Violation of the tightness of the oil pipe, in addition to sagging, can lead to insufficient lubrication of the chain. The pump begins to suck in air, which affects its performance. The leak is eliminated by replacing the tubes or sealing them with sealant.

    The most serious damage to the lubrication system are cracks in the oil pump housing. In this case, it will have to be replaced.

    Chain brake

    Replacing Wear Parts

    If you do not replace the wearing parts in time, their excessive wear will adversely affect the other parts of the chainsaw. In particular, if you do not change the tire and the drive sprocket in time, increased vibration will adversely affect the crankshaft bearings. The maximum depth of the tooth sprocket should be 0.5 mm. In practice, sprockets are often operated up to a wear depth of 1 mm or more. not suspecting that this leads to an increased load on the crankshaft bearings and their accelerated failure. When 3-4 chains are worn, it is necessary to change the tire itself, by this time its wear reaches its limit values.

    The chainsaw tire wears out especially in the area that is cut most often, usually. this is the underside of the guide rail. For uniform wear, each time the chain is replaced, the tire must be turned 180 ° relative to the horizontal axis.

    When installing a new chain, put a new drive sprocket. Since under normal load the service life of the drive sprocket is twice as long as the service life of the chain, it is advisable to use one sprocket for alternating operation of the two chains. Thanks to this, the sprocket and chains wear out almost simultaneously. If a new chain is placed on a worn sprocket, then the leading chain links wear out much faster. For cost-effective operation of the chainsaw, always spend together: one guide bar, two chain sprockets, four saw chains.

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