Fuel adjustment for a trimmer for Husqvarna grass. Device and principle of operation of the carburetor Husqvarna

Frequent trimmer malfunctions for Husqvarna 128r grass

Deciphering symbols

Conditions ………………… 2 …………………………………………………………………………. 3 Before launch, follow the following: …………………………………………………………………………. 3 that there is something? What is there?……………………………… 4 General Security Proposits important information 5 Operator protection products …………. 5 Protective devices of the tool ………………………………………. 6 Cutting equipment ………………… 10 Sub.Book Assembly of the handle …………………………………………………………………. 13 Fixing belt fastening the holder of the shoulder belt …………………………………………………………………………………………………………………. 13 fastening of the knives and head of a trimmer for grass …………………………………… 14 fastening of the shield, knife and disk for clearing. 15 installation of protection and trimmer head ………………………………………………………………………. 15 Rules for the handling of the safety rule during refueling …………………………………………………………………………………………………. 16 Preparation of the fuel mixture ………… 16 Refueling …………………………………………………………………………………. 18 Latin and stop Verification before launch. 19 launch and stop …………………………. 19 Method of work General working instructions. 25 muffler …………………………………………………. 26 Speak of ignition …………………………. 27 Air Filter …………………………… 28 Angular Reducer …………………………………………………………………. 28 Sharpening of knives and disks ………………… 28 Schedule of maintenance. 29

Specifications …………. 31 EC guarantee on compliance (

Before starting, follow the following:

Please, carefully read the operating instructions.

circumstances should not make changes to the initial design of the machine without the permission of the manufacturer. Always use only original spare parts. The use of unauthorized changes and/or accessories can lead to serious injury or death of the operator or other people.

Custosens or trimmer for grass, which are used carelessly or incorrectly, can become dangerous and lead to serious injuries of the operator or others. You must definitely know and understand this instruction.

Prolonged impact of noise leads to incurable violations. Therefore, always use the recommended protection against noise.

Husqvarna AB is constantly working on the improvement and development of its products and therefore reserves the right to make changes to form and design without preliminary warning.

Device and principle of operation of the carburetor Husqvarna

To successfully configure the carburetor of the Husqvarna chainsaw, you need to know its device and understand how it works. In fact, everything is not as difficult as it seems at first glance.

The saw carburetor has a built.in fuel pump, which is responsible for transporting a mixture of gasoline with butter, as well as a diaphragm, a needle valve with a rocker. Their joint work allows you to dose the supply of fuel into the main chamber and two shutters.

One of the shutters is designed to adjust the fuel supply to the cylinder when pressing the gas, it is called throttle, the second is responsible for restricting the air filter air supply to facilitate the launch of the Husqvarna cold chainsaw. At the moment when the operator blocks the air damage to the carburetor, the fuel mixture is impoverished and its supply to the cylinder is increased, due to which the chainsaws are launched much easier than when the cold launch is carried out in normal mode.

The Khuskvarna carburetor is involved in the Khuskvarna valve, which sprays fuel and prevents the flow of air into the main chamber. Often, problems during the operation of the saw can be caused by defects of this particular element. For example, the valve, if the chainsaw is improperly stored, can stick, the fuel supply will stop, which will make the engine impossible to operate. Also, no violations in the work of the nozzles can cause air leaks in the main fuel chamber of the carburetor. In such cases, adjustment of the position of the adjusting screws will not correct the situation, you will need to repair or replace the assembly.

For setting the quality and amount of the mixture, as well as the number of crankshaft revolutions in idle, three adjusting screws installed in the carburetor case:

• screw (l). regulates the amount of fuel in low and medium.speed mode;
• (H). is responsible for traction at high speeds and their number;
• (T). changes the position of the throttle ditch, thereby regulating the amount of fuel mixture entering the cylinder and the operation of the tool engine in idle mode.

Screws (l) and (h) cannot be adjusted without certain knowledge and experience. Incorrect setting of quality and the amount of fuel mixture can lead to the fact that the engine will stop working or work incorrectly, which will lead to its rapid wear or even jamming.

Husqvarna 125 r trimmer adjustment of a trimmer carburetor video

Modern chainsaws have a complex system and consist of several main nodes, which at times require maintenance and adjustment. Next, let’s talk about how to adjust the carburetor on the Husqvarna chainsaw.

Troubles, the solution of which is the adjustment

carburetor, a lot.Husqvarna chainsaw carburetor adjustment is needed when defects arise as:

• high speed revolutions;
• strong smoke during the tool;
• difficult to start the cool in other words of the hot motor;
• Lack of traction and low.reduced speed.

This is not a complete list of troubles, the solution of which will be the configuration of the carburetor Khuskvarna. In a number of all kinds of cases, setting the properties and amount of fuel consistency is carried out after the overhaul of the motor is different in the course of a planned chainsaw.

AB advises to adjust the carburetor before and after the run.in.

To successfully conduct the option of the Husqvarna chainsaw carburetor, you should know its device and realize how it works. In fact, what remains to make our client is not at all as difficult as it might seem.

The saw has an integrated fuel pump, which is responsible for transporting the consistency of gasoline with butter, also a diaphragm, an needle.shaped valve with a rocker. Their joint work allows you to dose the supply of fuel in the main camera and two shutters.

One of the shutters was created to adjust the supply of fuel to the cylinder when pressing the gas, it is called throttle, the 2nd-is responsible for limiting air from the air filter to facilitate the launch of the cool chainsaw of Husqvarna. At the moment when the operator blocks with the help of the air damage to the air supply to the carburetor

, The fuel consistency is impoverished and its supply to the cylinder is increased, through which the chainsaws are launched much easier than in this case, when the cool start is carried out in ordinary mode.

Carburetor adjustment Motokosa Husqvarna 125, 128

The Khuskvarna carburetor is involved in the Khuskarna Khuskvarna valve, which sprays fuel and prevents the flow of air into the main camera. Often, obstacles during the operation of the saw are caused by the shortcomings of this element. For example, a valve, with incorrect storage of a chainsaw may be stuck, the fuel supply will end, which will make the motor work unrealized. Also, violations in the work of the nozzles will be a prerequisite for the air leaks in the main fuel chamber of the carburetor. In this embodiment, adjustment of the position of the adjusting screws will not correct the situation, the repair or change of the node will come in handy.

Three adjusting screws installed in the carburetor case are responsible for setting the properties and quantity of the consistency, and the number of crankshaft revolutions in idle:

• screw (l). regulates the number of fuel working in low and medium.speed mode;
• (H). is responsible for the craving at large speeds and their number;
• (T). changes the position of the throttle ditch, which regulates the amount of fuel consistency entering the cylinder and the operation of the tool engine working in idle mode.

Screws (l) and (h) cannot be adjusted, without certain knowledge and experience. The incorrect setting of the properties and amount of fuel consistency leads to the fact that the engine does not work as it is also called incorrectly, which will lead to its rejection or even jamming.

Ordinary slotted screwdriver for adjustment is not suitable, t. to. Husqvarna chainsaw adjusting screws

They have a different section. We will have to purchase a special, this feature of the repair of the chainsaws of Husqvarna, they created our client to so that you can repair the saw exclusively in the special service of Husqvarna.

Husqvarna carburetors settings (factory)

Husqvarna carburetor is adjusted in the same way how carburetors are set up on the chainsaws of other manufacturers.

Before adjustment itself, it is necessary to carry out a complete diagnosis of the saw and make sure that there is no difficulty supplying fuel and air leaks to the chainsaw crankcase. You also need to make sure the air filter is clean and, if you wish, replace it to a new.

• Husqvarna carburetor factory options are installed on a drowned out saw.
• Starting the motor and heating the saw for a few minutes.
• With the help of rotation of the screw (l) clockwise, there is a position when the engine develops the highest turns, after which the screw must be unscrewed 1⁄4 ago. If, with all this, the chain of the chainsaw is spinning, then you need to reduce the speed of the idle speed, by adjusting the position of the screw (t).
• Subsequent step, this is the power adjustment at the greatest revolutions and the adjustment of their number. For this purpose, the tachometer connects to the focused chainsaw, the gas handle is squeezed to the full, after which the testimony of the tachometer is checked. If the value of the largest revolutions differs from the largest amount recommended by the manufacturer, then using the configuration of the screw position (h) the tachometer readings are carried out to the norm.

Read Mini Drill with revolutions

After adjustment, the chainsaws should simply type and drop speeds, work measuredly at low and high speeds. If the saw chain after adjusting the carburetor control screws is idle, this is a sign that the setting is carried out incorrectly and you need to adjust the screw position (t).

Also, when adjusting the Husqvarna carburetor, it is worth taking into account the time of the response of the chainsaw to rotation of the screws. The options do not change immediately, within 5, 10 seconds.

Diagnosis of a carburetor on chainsaws and motorcycles (accelerator, nozzle)

One of the characteristics of an incorrectly conducted adjustment, this is strong smoke during the operation of the saw, which indicates a large amount of fuel entering the combustion chamber. When such a situation appears, it is necessary to adjust the position of the screw (l).

Standard factory options for the Husqvarna carburetor, this position of the screws (H) and (L) in which serviceable chainsaw should be guaranteed to start. For Husqvarna tools, this is one and a half turns from one hundred percent twisted screws (H) and (L). During the adjustment, you must first install the screws in the standard position, then start the chainsaw and conduct accurate power adjustment, the number of the highest revolutions and idle speeds.

Make a carburetor to adjust

The module configuration cannot be repaired, and the replacement is not required. Honda carburetor Carburetor cleaning. In this case, the repair kit of the carburetor for a gas trimmer for grass is not required.

• L. Initially regulated because it is responsible for supplying fuel at low speeds;
• N. is responsible for supplying gasoline at high speeds, as well as for fuel consumption and temperature;
• T. With its help, simple debugging occurs.

There are options, as a rule, a carburetor of a Chinese gasoline scraper, when only one screw on the case remains to adjust. To adjust the idle. This does not mean that the module is configured automatically. This means that it will be difficult to even carry out this type of repair as a debugging. The photo shows the adjustment of the Chinese gasoline carburetor.

• The module is set up only when the engine is heated: for this, the device first turns on for 10 minutes. Adjustment of the carburetor if the head of the lawn mower operates at idle, immediately start adjusting: turn the t with the clockwise, until it stops rotating.
• Adjustment starts with a screw l. The screw rotates to the left and right until it finds its position in which the idle speed does not become maximum.
• Then turn the screw and turn it counterclockwise. This will be his work position.
• The idle action should be adjusted by turning counterclockwise to increase speed, and clockwise. decrease. Its setting is to achieve a regime in which sufficient rotation is performed before the mower begins to rotate. In this case, the engine should work stably in different positions.
• The position of the screw L is determined by the last. At maximum speeds, a trimmer for grass should not work for more than 10 seconds. The throttle opens, the screw rotates clockwise, very slowly, until the rotation speed decreases to the ear level.
• Then the screw also slowly rotates counterclockwise until the engine starts to crawl with failures. Then the screw turns back the clock, until the engine rests normally.

We offer to familiarize yourself with shoes for extremely low temperatures if there is a tonometer and if the product is the recommended speed of rotation in the product passport, correction can be made more accurate, focusing on the ear, but on the testimony of the device.

Please explain. In the regulation section of paragraph 5 of the screw l l? Should I read the screw a? Thanks

Tell me the initial position of the screws h l la

Tell me the initial position of the screws h l la

Please explain. In the regulation section of paragraph 5 of the screw l l? Should I read the screw a? Thanks

Tell me the initial position of the screws h l la

Tell me the initial position of the screws h l la

Regulation of carbohydrates of chainsaw Husqvarna

Modern chainsaws have a complex system and consist of several main components that require periodic maintenance and adjustment. In this article we will talk about how to adjust the carburetor on the Husqvarna chainsaw.

Когда карбюратор бензопилы Husqvarna нуждается в регулировке

There are many problems that can be solved by adjusting the carburetor. Husqvarna chainsaw carburetor adjustment is necessary in case of a malfunction, for example:

• increase downtime;
• strong smoke when working with a tool;
• difficulties with the launch of a cold or hot engine;
• Lack of traction and decrease in maximum speed.

This is not a complete list of problems that can be solved by installing the Husqvarna carburetor. In some cases, the quality and amount of the fuel mixture is adjusted after the overhaul of the engine or during the current maintenance of the chainsaw.

Husqvarna AB recommends adjusting the carburetor before and after breakdown.

Device and principle of operation of the carburetor Husqvarna

To successfully install the Husqvarna chainsaw, you need to know its device and understand how it works. In fact, everything is not as difficult as it seems at first glance.

The saw carburetor has a built-in fuel pump, which is responsible for transporting gasoline-oil mixture, as well as a diaphragm, a needle valve with SKAL-KO. Joint work allows you to measure fuel supply to the main chamber and two shutters.

Setting up a carburetor of a lawn mower with three adjusting screws

Before starting work, you need to place the lawn mower on a flat stable surface. Remove the chain in the opposite direction. There are motorcycles with two and three adjusting screws. Two screws most often equip the tools produced in China. Consider the adjustment of the carburetor Motokos with three screws.

Setting up a carburetor of a lawn mower with three adjusting screws

Before proceeding with the adjustment of the carburetor of the lawn mower, you need to rinse the air filter. Cleaning is carried out with water with a detergent or soap, and if necessary, a new. Often in the poor work of the carburetor, scibberries are guilty. In order to prevent the filter, it is recommended to clean the filter after every 10 hours of operation of the tool. Do not forget to check the condition of the candle, if there is a dozen, you need to clean it. Candles are consumables and have their own resource. To ensure good operation of the engine of the lawn mower, candles periodically need to be changed. Next, we evaluate how well the carburetor is fixed to the cylinder-piston group. After the preparatory manipulations are completed, you need to start the motor. Let the engine work for 5-10 minutes. Then you need to identify how many adjusting screws on your tool.

There are the following adjusting screws on the gasoline trimmer:

Fuel supply adjustment

At first you need to slowly tighten the screw adjustment screw for the fuel mixture. You need to do this until the engine starts to stall or stalls. Following this, if the engine did not stop working, you need to turn the screw for a quarter of turnover, and if it stalled, then by half the turnover. Next, you should have a stalled engine. Then you need to open the throttle and see how the speed is gaining. Turn the screw for a quarter of turnover again. You need to scroll until the engine begins to confidently gain increased speeds during cuffing. This is the right time when the engine works most economically. There are times when adjusting this screw does not give anything. Often the reason is in the factory spring that is located on this screw. This does not happen to all the tools. And if the spring turned out to be defective, then replacing it will not be difficult. A suitable spring can be purchased at any construction store.

Cooper adjustment

Following the adjustment of the fuel supply, we are accepting for the adjustment of the idle. To do this, you need to adjust the corresponding screw so that the engine works slightly accelerated at small speeds. But it is necessary to trace, for the immobility of the reel with fishing line and knives. Before the start of their movement, several revolutions should remain in stock. The movement of the coil and knives can subsequently lead to the rapid wear of the clutch. Having noticed that the engine starts poorly, you need to increase the number of revolutions at idle. With an increase in revolutions, the fuel mixture is saturated with air, which leads to power loss.

The main signs of the proper idle work:

• Revolutions for a trimmer head;
• Uninterrupted operation of the engine even when the position changes (sharp rise or descent of the knife);
• Calm operation of the engine at a cold move;
• Lack of increased speed of hot engine.

Maximum speed adjustment

Further, for the full tuning of the carburetor of the lawn mower, it is necessary to adjust the maximum speed. It will not be superfluous to look into the instrument operating manual and see the maximum speed value. This amount will help to determine the tachometer most accurately. If such a device was not at hand, we set up by ear. Barely determining the maximum speed of revolutions by ear, we begin adjustment. A screw for limiting maximum revolutions will help in this matter. Control the engine operation at maximum speed. If necessary, reduce speed, weaken the fixing nut and unscrew the screw. If the turnover is too large, then you will need to screw the screw. These actions must be done in order to protect the engine from overheating. Scroll the screw until the clear even operation of the engine is established.

After the work done, if everything is done correctly, the stable work of the tool is provided.

Understand this by the following signs:

general information

Husqvarna is a company from Sweden, which is a world leader in the production of various garden equipment. Husqvarna trademark products are trusted by buyers around the world.

One of the most popular trimmer models for grass is Husqvarna 128r.

This is a light lawn mower, which is designed to maintain in the purity of small personal plots.

One of the main structural features of the Husqvarna lawn mower is its small mass. Trimmer for grass weighs only 5 kilograms.

This moment is very important for future owners, since the lawn mower is worn on the shoulders, and eventually fatigue occurs over time.

The main problems and malfunctions of the carburetor.

Mesh filter. How to clean the muffler on the trimmer Husqvarna Husqvarna 128R Carburetor adjustment. There are only two tasks with this element more often:

In order to find out the cause of the breakdown, the fuel filter lid is unscrewed to extract the mesh filter. If the mud just accumulated on it, then flushing in gasoline or purge will help.

With visible damage on the mesh filter, it is necessary to put a new. There may also be damage to the fuel supply pipe (during the repair they practice checking this element).

The starting device of the carburetor almost always does not work due to blockages. Should be used for flushing acetone or the same gasoline.

Purging parts of a carburetor with click of compressed air. permissible and comfortable repair practice.

The hull of throttles, places of ligaments of the parts of the carburetor, intake or graduation pipeline. all of the listed parts are subject to depressurization. You can probably check the simple method. spread the problem area with soap foam.

How to repair a Husqvarna carburetor with your own hands?

During operation and diagnostics, defects in the carburetor may be detected. Most of them can be eliminated on their own with a minimum of knowledge and without contacting a specialized repair center.

Among the methods of elimination, one can distinguish:

• Replacement of various gaskets in places of connection of hermetic parts;
• Cleaning or replacing the filter elements of the carburetor;
• Replacing the pump elements or valves;

Almost all of the above details can be positioned as a reprimatum complex, which is used for small-cutting carburetors’ repair. After installing them, the Husqvarna 137 chainsaw carburetor can forget about the malfunctions for a long time, and regulation will become easier.

Signs of unbalancing

Carburetor debugging is certainly done in the manufacture of the device. Usually, the owners will find out about the need to adjust the supply of fuel with their own hands only after rather severe breakdowns, in the process of correcting which, the module was removed and, for example, was cleaned.

Signs of a malfunction in the settings are the following:

• It starts, but the engine stalls here. since the engine can only work when a certain amount of gasoline is submitted, with a very “poor” combustible, in other words, overlapping the supply channel, the motor will stop;
• A very large fuel consumption, a lot of exhaust gases. the result of incomplete combustion of the consistency. In this case, there is a lot of fuel, on the contrary, and the mixture comes out extremely dense.

Reference. Read to understand what you are doing!

The desired composition (quality) of the fuel mixture is adjusted (changed) by turning the screws for adjusting the supply of fuel into the flow of sucked air (right and left). The amount of the mixture of the throttle doses to the cylinder. If you turn them clockwise, then the mixture is impoverished in the cylinder (less fuel in the ratio of air/fuel) and engine speeds increase, while the Husqvarna engine is softer (it is slightly gaining speed) and the power drops strongly and the power drops strongly. In addition, having increased speeds, it enters the cylinder on the depleted mixture with gasoline less oil (worse lubricant) and so you can start the engine. Well, the trimmer for the grass will be bad to start. If the screws turn counterclockwise, then the mixture is sucked into the cylinder is enriched (more fuel in the ratio of air/fuel) and the engine speed decreases, while more gasoline and oil (preferably thrust, better lubrication), but the Husqvarna engine gets into the cylinder. “Spins” poorly (poorly gaining momentum) and more than a carriage is formed in the cylinder!

You should know that the carburetor can be correctly configured only if:

• Cleaning filters (gasoline and air) are not contaminated;
• nozzles and channels suitable for them are clean;
• membranes have no damage;
• The needle valve is working and the necessary volume of the fuel mixture is received in the float chamber.

To adjust the carburetor of imported chainsaws, it is necessary to adhere to the following rules.

Before adjusting, if possible, you should warm the engine at idle or minimum speeds of about 10-15 minutes. The rotation of the “l” regulator is achieved by such a engine that it gives out a idle one and a half to two thousand revolutions per minute

But you should pay attention to how the engine is gaining momentum. When pressing the accelerator lever, acceleration should go quickly and evenly

If the “failure” is detected, the screw should be slightly twisted until this phenomenon is eliminated, since it is caused by insufficient enrichment of the fuel mixture. When the supply of the mixture at low speeds is adjusted, you should start twisting the “T” screw until you notice the rotation of the saw chain. After that, the screw should be unscrewed by half or a third of the turn, observing the behavior of the adhesion mechanism. Normally, at idle speeds the saw should not rotate.

The screw “h” is compensated by underestimated or overestimated revolutions due to replacement of the type of fuel, changes in the concentration of oil or humidity.

Screw “h”, without enough experience, it is better not to regulate. If the tuning of the gasopyle carburetor is carried out by an incompetent person, the danger of the fact that at high speeds to the combustion chamber is too impoverished, especially during load. Such an engine operation will inevitably lead to the rapid wear of its piston system and to failure in the ignition system.

You can start adjusting high speeds if a person who sets up is knowledge and skills to adjust carburetor engines. At the disposal of the master, a special device should have a special device-a tachometer or multimeter with the function of the oscilloscope.

Setting up a chainsaw carburetor, namely, high engine speeds, occurs according to a simple scheme.

• It is necessary to tighten or twist the “H” screw until the engine develops about 15 thousand revolutions per minute (according to the tachometer) or the value that is indicated in the manual to this unit on maximum gas.
• When using an oscilloscope, the spark discharge frequency should be in the range from 230 to 250 Hz. It should be borne in mind that under load the frequency can decrease by approximately 10-15%.

The carburetor of the Chinese chainsaw should be configured by the same principle, as described above. There are holes on its case, into which, in order to adjust the engine speed, you need to insert a flat screwdriver. Each hole is signed by any one letter of three. As a rule, near the upper hole you can see the letter “T”, and near the lower ones (shown by arrows). the letters “L” and “H”.

The Chinese Carver chainsaw (Carver) has the same location of the screws. The following figure shows what a carburetor looks like from a Chinese chainsaw outside the unit housing.

Signs and causes of poor unstable work

Signs of violations of the functioning of the chainsaw carburetor:

• The engine starts poorly and stalls quickly. Possible reason: impoverished mixture.
• Excessive (more norm) fuel consumption. In addition, intense (more ordinary) exhausts. Possible reason: oversaturated mixture.
• The engine does not want to work at all. There are two reasons here: there is no gasoline (the fuel nozzle is clogged) or there is no spark (a candle is faulty, a breakthrough of a high.voltage wire or failure of an electronic unit).

The settings failure itself are rare and the reasons are usually the following: the following:

• Violation of the mounting screws from a faulty (damaged) coating of a protective casing. Possible reason: inaccurate touch, attempts of rough adjustment or strong external vibrations.
• Wear of the piston group. Here of course, the adjustment of the carburetor, it will not particularly help. Think about the repair of ICE or the replacement of the saw.
• Carburetor pollution. The probable reason: breakdown or unsatisfactory condition of the air filter, the use of poor.quality fuel, getting into the fuel channels of the scale, the smallest sawdust, etc. D. In such cases, at first, washing the entire fuel system, and only then. adjustment.

DIY Carburetor adjustment

The adjustment is not provided on all carburetors of Chinese chainsaws. Today there are many models of chainsaws of household class, including European brands, on the carburetors of which there are simply no adjusting screws. Or there is only one idle adjustment screw.

Such carburetors require adjustment only when the chainsaw at idle makes too rare exhausts (turns) and sometimes stalls. Below the text will be considered an algorithm for adjusting the idle passage of a carburetor on a Chinese chainsaw.

Necessary tools

The adjustment requires a screwdriver suitable for the slots of the adjusting screws. On different carburetors, they are flat, cross.shaped, with an internal or external hexagon, asterisk, etc.P.

Carburetor adjustment algorithm

Before adjustment, make sure of its need. All Chinese carburetors, on each chainsaw, pass the factory setting, which is extremely rare. Adjustment may require a new carburetor, or in rare cases the old.

The reason for the deterioration of the engine with signs similar to the poor supply of the fuel mixture is in most cases:

If the problem is not this, then they try to regulate the carburetor.

The engine must be warmed up. Cold and warmed up to operating temperatures, the engine works differently. Therefore, adjustment on the cold will be incorrect.

• Open access to adjusting screws. On some chainsaws, it is enough to remove the lid and the air cleaner. On others you have to remove part of the case. On the third, holes under the screwdriver are provided in the case.
• On the carburetor or near the holes there is a marking of screws. t (or la) l and h. Screw t (or LA) is designed to adjust the idle. Always located away from the screws l and h, which are next to each other.
• If the gasopyle stalls when the gas is supplied, the engine does not have enough fuel to develop speed. The amount of fuel is adjusted to the screw H (the main screw). It is twisted for 1/4 turnover and give gas. If the engine has become better to work, they twist another 1/4 turnover. (If worse, then twisted on 1/4 turnover in the opposite direction).
• If the engine began to work as in idle, then there is a lot of fuel, the screw H is twisted back.
• The peak of revolutions is controlled by ear or by tachometer. The maximum revolutions for each chainsaw are indicated in the instructions. (10,000. 12 500 rpm). In practice, 10,000. 11,000 rpm in the Gas for All. normal indicators.
• Having increased the supply of the amount of fuel with a screw H, they adjust the quality of the fuel mixture with a screw L. It increases and reduces the amount of air in the mixture. If there is little air, the fuel will not fade, as a result, the engine smokes, does not develop power and consumes excess fuel. Also the screw L affects the engine operation at small and medium speeds.
• After adjusting the screw h, the screw l is twisted at 1/4 turnover. If the exhaust is smoke, and the engine goes from small revolutions to medium and high with failures, the screw l is twisted again.
• The adjustment of the screw L is stopped when the engine works smoothly, smoothly moves from small speeds to high and does not smoke.

The location of the adjusting screws is highlighted by a red square. For access to them, enough screwdriver. Nothing needs to be disassembled.

Cooper adjustment

Cooper adjustment sequence:

• The engine is being developed and warmed up for 5-7 minutes.
• The screw is twisted, increasing the speed until the chain begins to scroll through.
• Then the screw is screwed back for 1/4 turnover.

If there is an electronic tachometer, when adjusting it is necessary to use its indications. Most chainsaws should be developed at idle 2500 rpm.

Nuances that arise in the process

Screw l can not be twisted too much relative to the screw h. This will lead to the formation of a depleted fuel mixture (little gasoline. a lot of air). With such a mixture, the piston is dry during the work, it is very warm and may fail.

New carburetors on Chinese chainsaws, sold separately, are regulated at factories for a standard number of revolutions or arbitrarily. Therefore, they may require adjustment after installation on a chainsaw.

If a new chainsaw is not started, you should check the presence and supply of fuel, the occurrence of a spark on the spark plug, the functioning of the exhaust valve, the condition of the filters. The work of a saloon stalling device built into the fuel cover of a stalling device.

The reason that the Chinese chainsaw is not started can be poor.quality equipment. It is possible to have various malfunctions, incorrect assembly. Some goods come to defective. If the inspection has not revealed malfunctions that can be eliminated independently, you can replace the saw on the warranty coupon.

On the cold

The reason why the device does not start on the cold is often a violation of the sequence of engine start.up.

To enrich fuel, you should first close the air damper. After that, fuel suction is produced. For this, a special primer is used. Then turn on the ignition. Until the first outbreak of engine, several starter movements need to be made. The damper opens, the device is launched. If the sequence is violated, any step is missed, incorrect work is possible.

If the chainsaw has stopped starting, the probable reason is the problem with the fuel system. Non-varnishes with launch can occur due to an incorrectly adjusted carburetor, clogging of the highway and the fuel filter. The quality of fuel is also important. If the fuel is diluted with water, the device is poorly started or does not work at all. The mixture should be fresh.

Read also: Rules for working with a megaommeter according to the new rules

A possible cause of problem launch is engine malfunction. Wear or breakdown of the part leads to undesirable consequences: reducing compression in cylinders and other troubles. It is recommended to contact specialists with such problems, since it is difficult to diagnose and fix the breakdown independently.

Hot

If the chainsaw is poorly started to be hot, you should start an inspection of the tool from the spark plug. It will also be required to check the spark on the candle.

So that the device works properly must be a dry candle. When it is wet, there are no sparks on the contacts. You can try to replace the part with a new.

If there is a spark and the candle is in good condition, try to look for a problem in the fuel system. If, upon visual inspection, it was not possible to detect the cause of the breakdown, the carburetor should be removed. If the amount of fuel exceeds the permissible, the device will not work. The candle should be wet. Should turn the candle hole down down. If the fuel mixture is pouring, the reason why the chainsaw is not started on hot, there will be an excess of fuel.

Signs of unbalancing

Carburetor debugging is necessarily carried out in the manufacture of the device. As a rule, the owners will learn about the need to adjust the fuel supply with their own hands only after quite serious breakdowns, in the process of correcting which, the module was removed and, for example, cleaned.

Signs of failure in the settings are the following:

• starts up, but immediately stalls the engine. since the engine can only work when a certain amount of gasoline is supplied, with too “poor” fuel, that is, overlapping the supply channel, the motor will stop;
• too much fuel consumption, many exhaust gases. the result of incomplete combustion of the mixture. In this case, the fuel, on the contrary, is too much and the mixture is excessively dense.

Husqvarna 125R Setting a carburetor without a tachometer (temporary solution)

,If you need to work, and the service with a tachometer is far away.

Stihl, Makita, Husqvarna and others are adjusted using adjusting screws. Sometimes the reason for disrupting the work is a violation of fixation-due to vibration or damage to the protective cap. Such a breakdown can be found only by trying to turn the screw a little: if the fixation is not stiff, it is worth checking the setting.

Do.it.yourself carburetor adjustment

The setting of the module does not apply to the repair and the change of spare parts is not required. Carbier of the carburetor of the Honda lawn mower. In this case, the armored complex of the carburetor of the lawn mower will not be needed.

• L. is regulated first, as it is responsible for supplying fuel at low speeds;
• H. he is responsible for supplying gasoline at high speeds, as well as for fuel consumption and temperature;
• T. with it, the idle speed is debugged.

There are options, as a rule, this is a carburetor of a Chinese lawn mower, when only one screw remains for debugging on the case. to configure idle. This does not mean that the module is configured automatically. this means that even such a type of repair as debugging will be difficult to carry out. In the photo. adjusting the carburetor of the Chinese lawn mower.

• The module tuning is carried out only with a heated engine: for this, the device is pre.included for 10 minutes. Adjustment of the carburetor of the lawn mower cedar. If the mowing head rotates at idle, then they begin to debugged immediately: turn the screw T counts the clock until the rotation stops.
• Adjustment starts with a screw l. The screw turns to the right and to the left until it finds such a position in which the idle speed does not become maximum.
• Then the screw is turned on ¼ turn against the watch. This will be his working position.
• The idle stroke must be configured by turns against the sentry to increase the number of revolutions and the clock. to reduce. Its debugging consists in achieving such a regime in which a sufficient number of revolutions are performed before the rotation of the mowing head. In this case, the engine should operate steadily at different positions.
• The position of the screw L is determined by the latter. at maximum speed the trimmer for grass should not work for more than 10 seconds. The throttle opens, the screw is closed clockwork, very slowly, until a decrease in the number of revolutions is established by ear.
• Then also slowly the screw rotates against the sentry until the engine starts to work with failures. After which the screw is on the time, until the engine again works normally.

If there is a tanometer, and if the product is indicated in the product passport, coooreecration can be carried out more accurate, focusing not by ear, but on the testimony of the device.

Please clarify. In the section adjustment p.5, screw l error? You should read the screw a? Thanks to.

Tell me the initial position of the screws h l la

Tell me the initial position of the screws h l la

The spring may interfere

My first attempt to adjust the gas mowing carburetor did not give anything, since the spring of the fuel mixture adjustment propeller prevented. The factory spring turned out to be too thick in a compressed state and did not make it possible to reduce the supply of fuel to the required level. I had to choose another spring and continue the adjustment after its replacement.

The adjusting screw for feeding the fuel mixture with the spring

In the photo above the factory spring, below the adjusting screw with a selected spring. I am writing about this, because I am not sure that this is an isolated case, and someone else may face the same situation.

From personal experience

lawn mower or trimmer for grass

Trimmer for grass is a broader concept than a lawn mower (lawn mower), since it can also be an electric. Gasoline trimmer for grass and lawn mower. This is the same.

Some authors assure that a trimmer for grass. This is a weaker tool, in contrast to a more powerful lawn mower, which can be used to mow shrubs. Personally, I have a tool with a maximum capacity of 1.7 kW and capable, as stated in the instructions, to mow a small shrub up to 10 mm thick. User manual is called “trimmer for grass gasoline. “”.

The proportion of the fuel mixture

I read somewhere that if the law mowing manual and the canister with butter indicates different proportions of the preparation of the fuel mixture, the proportion indicated in the manual should be used.

For a long time he did. Excess oil flowed out of the engine to the gas tank and the fog was constantly formed on the candle, since the leadership indicated a proportion for a running.in engine 1:25, and on the canister. 1:50. After the transition to a proportion of 1:50, the appearance of oil fluxes stopped. The candle continued to burn, but with less intensity (the carburetor has not yet been adjusted).

Until now, some users of the benzo tool determine the fuel mixture “by eye”. If when preparing the mixture the amount of oil is underestimated, after a while an extraneous sound may appear immediately after the engine starts, gradually disappeared during heating, and the engine stop occurs with a sharp jerk. The continuation of the operation of a trimmer for grass in this mode will lead to its failure.

Clead cleaning

In the worst times of the work with a trimmer with an unresolved carburetor, the engine stopped starting after using each fuel tank. And only after cleaning the candle from the car, could you continue to work.

Small sandpaper was used to clean the electrodes, and to clean the space between the insulator and the case. Subtle office paper clip with a bent end. At first, the electrodes were wiped with high dirt with a rag, then cleaned with sandpaper. After that, the candle fell into the diesel fuel and the moistened carpet was opposed by a paper clip from the surfaces of the insulator, the inside of the body and between them. Further, the candle fell several times into the diesel fuel, which then shake off it along with the pollution. Sometimes the procedure for cleaning a paper clip and washing were repeated. After that, the candle wiped dry and was ready for further operation.

Невероятно, но один бачок топливной смеси при неотрегулированном карбюраторе может израсходоваться менее, чем за 10 минут. проверено на практике, когда триммер для травы был запущен и эксплуатировался на высоких оборотах с максимальной подачей топлива (регулировочный винт был откручен намного больше нормы).