Huter lawn mowing adjustment. Failed muffler of the chainsaw

A trimmer carburetor device for gasoline grass

Motokosa carburetor adjustment is a process that needs to be mastered for the full operation of a trimmer for grass. Trimmer for grass is a completely simple device that can break in only a few places and demand a mechanical repair or replacement of part. Adjustment of the carburetor device of the float.type motorcycles may require knowledge of certain subtleties. The nuances due to the model and the specifics of its functioning will ensure a clear mixing and supply regime of the fuel mixture.

CHAMPION BAS carburetor, how to adjust? This is just a trimmer for floating type grass. a common option designed to mix air and fuel in the proportions provided. The main problems arising during the operation of the motor are approximately similar to the problems that overtake the carburetor in the car:

  • the motor can stall immediately after it managed to start. The reason is that gasoline is supplied in insufficient quantities. This is called “poor” fuel;
  • Excessively fed gasoline leads to its incomplete combustion, excessive density of the mixture and uneconomous consumption.

Repair of the carburetor

Important! It is necessary to regulate the carburetor under different circumstances: a change in the temperature regime, octane fuel or type of oil, after winter or end of the run.in, load or spontaneous turning of the screws from strong vibration of the body. Some owners prefer to configure the module before each use to make sure of its correct work.

The main problems

Malfunctions of the carburetor Motokos or trimmer for grass, despite the relative simplicity of their elimination, sometimes require a long search by excluding. The main reasons are as follows:

The most repeating breakdown is wear, rupture of the membrane. As a result, its lavation. Fuel moves are not sealed at certain stages of the engine cycle. The reasons here are as follows:

  • You have been working on a motorcycle or trimmer for too long without a break;
  • Poor.quality fuel was seasoned;
  • Wheelled gases fall into the pulse channel.

A deformed membrane is fraught with several bad consequences:

  • not enough gasoline or oxygen in the created combustible mixture;
  • the launch of the motor occurs after 10 or more unsuccessful attempts;
  • the engine knocks, clats during operation, and t. D.;
  • The working piston is deformed.

We offer to familiarize yourself with how many citric acid for a liter jar of cucumbers

The reasons for the clogging of the mesh filter are poor.quality fuel cleaning, damage to the hose and/or the injection head.

Wear of the contact edge of the lever. a consequence of not completely purified fuel, into which grains of sand or particles of clay, metal or other inclusions that are not soluble in liquid hydrocarbons fell. A problem with fuel injection appears, the motor does not function with interruptions without load.

The inlet needle breaks due to the presence of metal and stone particles in gasoline. As a result, the saddle of the intake needle tightly adjacent to it, the fuel mixture flows. In the combustible mixture created by the carburetor, there is too much air, which is why the motor can “sneeze” during operation. Finally, the needle can stop due to poor-quality gasoline, or the unit was idle for a long time.

Deposits may accumulate in the adjustment compartment. The needle does not completely cover the hole, and a lot of gasoline enters the fuel chamber. the motor pours it, perhaps floods the spark plugs. Because of this, the gasoline mixture contains an increased number of vapor of gasoline. The efficiency falls noticeably.

The membrane is often deformed (sometimes torn) due to continuous operation of motorcycles or trimmer for grass for several hours. If you abuse such a “shock” mode of operation, damage to the membrane occurs more often. New breakdowns will be sprinkled from a cornation of abundance:

  • the piston will break;
  • The number of attempts by the unsuccessful start of the engine will increase sharply;
  • The fuel mixture will contain too little gasoline;
  • Useful (thermal) power will drop sharply.

Sequeling of the adjusting lever. a consequence of the incorrect installation, random flexion. Contactive line will find an incorrect position. This will violate the additional injection of gasoline.

The damper has worn out

Throttle and air conditioning are unusable due to admission to the air flow of dust, metal particles, etc. D. Damaged shutters are similar to details subjected to streaming with sand. Due to wear of the damper, the efficiency of the motor decreases, breakdowns are detected. The piston and cylinder wear out.

In some cases, this filter is simply not suitable for your model motorcycles or trimmer for grass. In the end, the shaft of the motor will suffer. its pieces fall into the engine channels, which is why the piston will be broken.

The fact that the adjustment is too rough (it is not possible to accurately set the parameters) are to blame for the adjustment screws. The manufacturer Motokos or trimmer for grass can put excessively thick and hard springs. You can find others either in workshops where such equipment is repaired, or purchased from any dealer or official representative of the company who released the engine for your trimmer for grass or mechanical braid for grass.

huter, lawn, mowing, adjustment, muffler, chainsaw

The primer broke

Primer-a manual mini-pump for forced swinging fuel into a carburetor. For a successful start of the motor, it may be necessary to pump 20 ml of gasoline manually.

Carburetor adjustment

Quite often, with intense loads or using low.quality fuel mixture, carburetor settings come true. You can eliminate this malfunction in a specialized workshop or repair the house. How to adjust the carburetor of the chainsaw at home, see here:

How to adjust the carburetor correctly?

Consider as an example, the adjustment of the Partner chainsaw carburetor.

For adjustment, you need to have a slotted screwdriver and a device. a tachometer that allows you to measure the engine speed.

Settings are carried out in the following sequence:

  • setting up a gasopyle carburetor at low speeds;
  • adjustment at maximum speeds;
  • accurate setting to work at idle;
  • Checking a saw in all modes.

It is necessary to start after the engine works and warms up.

The adjustment of the chainsaw is performed using three adjusting screws on its case:

If the carburetor is completely resolved and the engine does not want to start, put the screws L and H to the standard setting position: first tighten them completely, then unscrew them by half a turnover.

Run the engine and let it warm up, then proceed to adjust low speeds using the screws L and T.

Further, to configure at maximum speed, slowly twist the screw n, achieving according to the testimony of the tachometer of the maximum speed.

After the end of the adjustment, it is important to check the engine operation in all modes. To do this, you need to drown it out and let it cool

Then start the saw in the cold launch mode and follow the engine operating in idle mode. If the gas is smoothly added and reduced, and the circuit does not move, the adjustment is performed correctly. Next, you should check during sawing. If there is a loss of power, the adjustment is repeated.

DIY carburetor repair

The carburetor is easily disassembled, so the repair of the gasopyle carburetor can be done yourself. For example, if necessary, it is quite possible to do the following operations with your own hands:

  • replace the gasket under the lid of the main camera;
  • Rinse or replace the fuel filter;
  • Replace the needle valve and fuel pump diaphragm.

Before proceeding with the disassembly of the carburetor, it is necessary to clean the dirt from the surface of the case, since it can get inside the carburetor and clog the holes of needle valves and a jack.

Next, you should plug the control rods of the air and throttle damper, dismantle the air filter and remove the lid of the main chamber, unscrewing the mounting screws. After that, you can start replacing the mentioned details.

Very often the reason for the blank of the saw may be defects in the ignition system, in particular, candles due to the following reasons:

  • Nar on a candle. indicates poor.quality oil or improper adjustment of the carburetor;
  • Fuel of the candle with fuel. incorrect carburetor adjustment.

To check the condition of the candle, twist it with a special key from the cylinder head.

The soot on the candle is removed using a needle or awl, and if necessary. a skin, then put it in place and try to start the engine.

We wipe the flooded candle with a rag, dry, put in place and try to run the saw.

In some cases, the engine smokes and stalls at high speeds. The reason may be clogging of the silencer with the products of the exhaust, so you need to remove the muffler, rinse the crust with gasoline, wipe, dry and put in place again. While the muffler does not stand still, the exhaust hole should be closed with a rag so that the dirt does not get.

Carburetor setup in case of changing working conditions

In this case, you do not need to identify a breakdown, and the carburetor adjustment is performed so that the chainsaw can work in new conditions for it. First, start the chainsaw and let the engine warm up within 10 minutes. After that, you need to determine the position of the idle screw so that the speed is maximum. To do this, very slowly and smoothly turn the screw in one direction, then in the other and so on until you find the position of the screw. After that, turn this screw for a quarter of turning counterclockwise (hereinafter PEF).

Then continue adjusting the idle stroke, using the screw “s”:

  • If the chain, after manipulations with the first screw, is motionless, then you need to smoothly rotate the “S” screw clockwise (hereinafter referred to as you) until it starts moving, and then twist the screw “S” to a quarter of the turn in the opposite direction;
  • If the chain moves, then you need to rotate the screw “S” of the PFS until the chain stops, and then twist the screw “S” to a quarter of turning in the same direction.

After this setup, the engines should work evenly and the engine acceleration should be normal. Normal engine acceleration is when when clicking on the fuel supply button, the revolutions gain maximum values ​​without failures. If the engine does not work evenly or very poorly accelerate, then you need to twist the “l” of the PCH on 1/8. After that, you need to again make the setting of the screw “S” described above. These manipulations need to be repeated until the engine begins uniform operation and acceleration will be normal.

After that, you need to check the setting of the bolt “h”. To check it, you need to disperse the engine to maximum speed. Be sure to pause and do not hold maximum turns without load for a very long time. Watch the exhaust and sound of the motor. If a lot of blue smoke comes from the muffler and the motor works very loudly, then your carburetor makes a very rich mixture. In this case, you need to turn the bolt »H” by a quarter of bad. After that, check the engine operation again and repeat the adjustment if necessary.

When a motorcycle makes a screeching sound, the motor is very hot, the exhaust is accompanied by a crack and/or interruptions in the ignition are heard, that is, detonation is underway. the mixture is too poor, and the maximum engine speeds are higher than should be. This leads to overheating of the power unit, the burning of the piston, the rapid wear of the cylinder and the burnout of the candle. In this case, you need to “h” for 1/4 turnover, turn the prom.

At the end of the adjustment, check the saw at idle. With properly adjusted UPT, it should work as follows:

  • one. The chain is motionless.
  • 2. Engine sound almost like a four.stroke.
  • 3. Accelerator pressing a quick set of maximum speed.

If these conditions are not fully respected, “S” (“LA”, “T”) should be used, as indicated above, or repeat the setting from the very beginning.

This is how approximate setting is carried out. For accurate, you need a tachometer. We do everything the same, only turn the adjusting bolts, focusing on the testimony of this device. This will allow accurately and most likely the first time to configure the carburetor, having achieved depending on the model of the tool for working with the wood installation tree at 2800–3300 rpm or higher and maximum. 11000–15000 rpm of/min. Which ones should be exhibited, you need to look in the technical documentation (operating instructions) at the saw.

Principle of operation

The order of injection and filtering of fuel in the engine of the lawn mower is next.

  • With the help of a throttle, the amount of air supplied to the diffuser is set. The more air is supplied, the more oxygen needs gasoline for combustion, and the greater the power released in the form of heat. The energy of the heat is further converted into a mechanical.
  • The membrane pump pumps the required amount of gasoline.
  • Next, gasoline passes through the engine fitting.
  • Fuel passes through a retractable and exhaust valve.
  • Fuel is filtered using a mesh filter.
  • Through the needle valve, it also enters the camera with the membrane.

The stages of the carburetor is as follows.

  • Air enters the pipeline with an air conditioning. The damper sets the desired air flow intensity.
  • The diffuser is narrowed in the node of gasoline’s injection. this is necessary to give a higher air flow rate.
  • Fuel passes through the bastard compartment and passes the jet, falls into this narrowing of the tube. The float compartment doses the supply of gasoline. In this compartment, the pressure is in a state of equilibrium. In a narrowed tube, it decreases. Due to the difference in both values ​​of pressure gasoline and passes through the jetler.
  • Accelerated stream sprays gasoline, converting it into aerosol pairs. The resulting gas-air mixture is ready for a rowing in the combustion chamber.
  • Having passed through the fuel pipeline, this mixture is in the cylinder of the carburetor.

Conclusion: To set the required power, first of all, you will adjust the rate of combustion of fuel using an air damper. If the gap is too small, and the oxygen in such a mixture is less than 10%. the fuel does not burn, therefore, the engine will not start or immediately staller.

In the case of buying a Chinese trimmer for grass, it is worth considering that it differs little from European- the same 2- or 4-stroke engine and drive.

However, the quality of the details is saved, forcing the consumer to change them more often. Check what compatible details offer non.Chinese companies for your device.

The main problems

Malfunctions of the carburetor Motokos or trimmer for grass, despite the relative simplicity of their elimination, sometimes require a long search by excluding. The main reasons are as follows:

Flamming fuel supercharger

The most repeating breakdown is wear, rupture of the membrane. As a result, its lavation. Fuel moves are not sealed at certain stages of the engine cycle. The reasons here are as follows:

  • You have been working on a motorcycle or trimmer for too long without a break;
  • Poor.quality fuel was seasoned;
  • Wheelled gases fall into the pulse channel.

A deformed membrane is fraught with several bad consequences:

  • not enough gasoline or oxygen in the created combustible mixture;
  • the launch of the motor occurs after 10 or more unsuccessful attempts;
  • the engine knocks, clats during operation, and t. D.;
  • The working piston is deformed.

As a result, the internal space of the fuel pump is contaminated from the side of the pulse channel.

Ground of a mesh filter

The reasons for the clogging of the mesh filter are poor.quality fuel cleaning, damage to the hose and/or the injection head.

The failure of the adjustment lever

Wear of the contact edge of the lever. a consequence of not completely purified fuel, into which grains of sand or particles of clay, metal or other inclusions that are not soluble in liquid hydrocarbons fell. A problem with fuel injection appears, the motor does not function with interruptions without load.

The inlet needle is spoiled

The inlet needle breaks due to the presence of metal and stone particles in gasoline. As a result, the saddle of the intake needle tightly adjacent to it, the fuel mixture flows. In the combustible mixture created by the carburetor, there is too much air, which is why the motor can “sneeze” during operation. Finally, the needle can stop due to poor-quality gasoline, or the unit was idle for a long time.

Clogging the adjusting space

Deposits may accumulate in the adjustment compartment. The needle does not completely cover the hole, and a lot of gasoline enters the fuel chamber. the motor pours it, perhaps floods the spark plugs. Because of this, the gasoline mixture contains an increased number of vapor of gasoline. The efficiency falls noticeably.

Echo 4510 Muffler Mod and Carb limiter removal

The adjustment membrane is spoiled

The membrane is often deformed (sometimes torn) due to continuous operation of motorcycles or trimmer for grass for several hours. If you abuse such a “shock” mode of operation, damage to the membrane occurs more often. New breakdowns will be sprinkled from a cornation of abundance:

  • the piston will break;
  • The number of attempts by the unsuccessful start of the engine will increase sharply;
  • The fuel mixture will contain too little gasoline;
  • Useful (thermal) power will drop sharply.

The inlet regulatory lever sees

Sequeling of the adjusting lever. a consequence of the incorrect installation, random flexion. Contactive line will find an incorrect position. This will violate the additional injection of gasoline.

huter, lawn, mowing, adjustment, muffler, chainsaw

The damper has worn out

Throttle and air conditioning are unusable due to admission to the air flow of dust, metal particles, etc. D. Damaged shutters are similar to details subjected to streaming with sand. Due to wear of the damper, the efficiency of the motor decreases, breakdowns are detected. The piston and cylinder wear out.

The shutters become unusable due to incorrect service of the air filter or its breakdown.

In some cases, this filter is simply not suitable for your model motorcycles or trimmer for grass. In the end, the shaft of the motor will suffer. its pieces fall into the engine channels, which is why the piston will be broken.

The carburetor cannot be adjusted

The fact that the adjustment is too rough (it is not possible to accurately set the parameters) are to blame for the adjustment screws. The manufacturer Motokos or trimmer for grass can put excessively thick and hard springs. You can find others either in workshops where such equipment is repaired, or purchased from any dealer or official representative of the company who released the engine for your trimmer for grass or mechanical braid for grass.

huter, lawn, mowing, adjustment, muffler, chainsaw

The primer broke

Primer-a manual mini-pump for forced swinging fuel into a carburetor. For a successful start of the motor, it may be necessary to pump 20 ml of gasoline manually.

The device of the carburetor of the lawn mower

The standard design of any gasoline trimmer for grass must include a fuel system, the basis of which is the action of a standard carburetor. Its device and the initial principle of action are almost the same for all motos, regardless of their design characteristics and purpose.

The carburetor of the motorcycles consists of an entire.metal aluminum corps, which protects the internal components of the node from moisture, fine debris and dust. In the lower part of the case, a built.in diffuser is provided, the second name of which is “Venturi’s nozzle”. The main function of this regular part is the supply of air in the amount that is required by the fuel node to enrich the fuel. Diffusure work on a simple principle: the smaller its diameter becomes, the more intensively the air is absorbed. This is due to the fact that in the zone of the smallest diameter the level of air discharge becomes maximum.

The upper part of the built.in factory diffuser is pre.equipped with fuel tubes, according to which, under the influence of air, the fuel mixture is delayed. The remaining parts of the carburetor: regular adjusting screws and fuel pump can be located both inside and outside the carburetor.

The device of the carburetor Motokosa includes a throttle, the main task of which is to adjust the volumes of absorbed air. The larger the amount of air, the higher the rated power of the power unit of the trimmer for grass. Another damper function is to relieve the cold start of the engine. If the lawn mower is started for the first time after prolonged downtime, then the damper must be closed. Immediately after starting the motor, the part must be opened, otherwise the ICE will stall.

The carburetor for a trimmer for grass is equipped with a pulsed channel, which connects the internal cavity of the ICE crankcase with the pulse chamber of the pump. The piston located in the motor cylinder creates reciprocating movements, which leads to phased changes in pressure inside the crankcase. At the same time, a membrane is set in motion. Thus, the action of the pump is completely synchronized with the operation of the power unit.

A standard carburetor membrane takes an active part in the fuel suction. In the fuel node, it gets through the fitting. After that, the fuel passes through the built.in intake and exhaust valve, then through the mesh filter and fuel tube. Then the fuel flows next to the needle and gradually fills the camera equipped with a control membrane.

The standard valve of the carburetor trimmer for the grass is connected to the membrane using a lever. Below the built.in membrane is a cavity into which the air is absorbed through a special hole.

The carburetor for the lawn mower is working on this principle in stages. This ensures the continuous operation of the fuel unit and the uninterrupted supply of fuel in the cylinder of the standard power unit.

Cooper adjustment

We start adjusting small revolutions. The screw limits the return movement of the throttle lever. wrapping it, we increase idle speed, unscrewing it. reduce. Adjust so that the engine works confidently at low speeds and even a little accelerated (for better starting), but so that the coil with a fishing line or a knife does not rotate, and before the start of their rotation there is a sufficient supply of revolutions. If the engine is poorly starting, still increase the speed at idle.

Fuel supply adjustment

Start slowly wrap the screw for supplying the fuel mixture until the moment the engine starts to stall or until it stalls if you do not have time to catch the moment. After that, unscrew the screw for a quarter of turning if the engine has not stalled, or half a turn, if stalled. Get a stalled engine. Check, opening the throttle, as the engine is gaining momentum. Continue to turn off the screw for a quarter of turning until the engine during the frying begins to confidently gain increased speeds. This will be the moment of the most economical stable engine operation. In the gasoline trimmer for PRoraB-8406 grass, adjusting screws are wrapped clockwise, unscrewed-against, in some other brands there may be the other way around.

The design and principle of the functioning of the carburetor of the chainsaw

for mixing in certain proportions of oxygen and fuel

The device of the carburetor, in general, is the same in all saws, the exception is the chainsaws of Chinese. But, in principle, it will not be superfluous to look into the technical passport of the tool and study the structure of the carburetor. Its main components are as follows:

  • tube. an element responsible for the portion of air by opening or closing the damper;
  • diffuser. an element located at the input hole through which the fuel is supplied and designed to accelerate the air flow;
  • A sprayer. a mechanism for injection of fuel into the flow of air;
  • float chamber. a cavity designed to maintain a combustible mixture at the same level. It is from it through a jickle, fuel enters the spray.

Signs talking about the need to adjust the carburetor

There are several signs that the carburetor works incorrectly and it is required to adjust it.

The saw hardly starts up and stalls almost immediately after the start. The reason for this is that the fuel contains a low fraction of the octane.

If you have some of the above features, then it’s time to engage in adjusting the carburetor of the chainsaw.

Preparation for adjustment

Adjustment of the gas.rosopil carburetor occurs using three screws:

  • “H” is a screw that regulates maximum turnover and the main nozzle;
  • “L”. a screw for setting up low revolutions of the motor and nozzle nozzle;
  • The third screw regulates idle and can be indicated in different ways: “la”, “s”, “t”.

It is also possible that in your chainsaw there will be less, depends on the manufacturer.

So, the designation of the screws we found out, we proceed to preparatory procedures. Everything is simple here.

  • Find information about the angles of rotation of the screws in the technical passport at the saw. This condition must be respected, otherwise it can cause engine breakdown.
  • Put the chainsaw on any stable surface.
  • The saw chain should be directed away from you to avoid injuries.
  • To get to the carburetor, unscrew the bolts of the chainsaw cover and remove it.
  • Next, foam and part of the air filter is removed.

Now you can start directly to the adjustment itself, which is carried out in two stages.

Adjustment of the carburetor of the chainsaw

Twist the screws clockwise

After completing the procedure, start the engine and warm it up for 10 minutes, setting it on average speeds. Now we will take care of the idle screw, which, as we recall, can be indicated in different ways. It must be twisted against the course of the clockwise, until the engine starts to work evenly. Watch the chain moves or does not move. If so, then the screw still needs to be twisted counterclockwise. If the engine stalls in this mode, slightly turn the screw clockwise.

Upon completion of all manipulations, be sure to check: accelerations, idle speed and speed number.

Checking the chainsaw after configuring the carburetor

Did you correctly regulate the carburetor on the chainsaw will show the following tests. Smallly press the accelerator and, if the engine speeds have increased almost immediately to the maximum, then it works normally when accelerating. Maximum refers to values ​​from 2800 to 15000. If this does not happen, we twist the screw l for one eighth turn counterclockwise.

After these tests, you need to check the operation of the chainsaw in idle mode. We can talk about the correct adjustment of the idle screw, if the circuit does not move when checking, and the motor when you press the accelerator quickly gains the maximum number of speeds. The sound of the motor should fall into four tacts.

If when checking you understand that the necessary conditions are not reached, the adjustment must be carried out again or contact specialists.

Tools

The following tool will need to be adjusted: tachometer, screwdrivers, in rare cases special keys. We will analyze their purpose, the need for availability and cost.

The PARTner lineup is represented by subsequent modifications, any of them will be considered separately:

Partner P350S: 2 l engine.With.\ 140 watts set in motion a chain with a step of 3.8 inches, moving at a speed of 22 meters per second, stretched on a tire 400 mm long. these characteristics significantly increase performance, profitably highlighting this model in the middle of analog. The fuel tank capacity is 250 ml. The Partner P350S model uses new user safety approaches: an inertial locking of the circuit, blocking using a special switch, a chain capture, which allows it to inhibition with various methods. The design also introduced the fuel pump, which also removes the remaining air and fuel from the carburetor, which provides a more common start.

Partner 350 HT Chrome: a chainsaw is armed with a engine with a power of 1.3 liters.With.\ 1300 W, which is perfect for the implementation of the work of average difficulty. The highest characteristics of performance provides a chain with a 3.8 inches teeth pitch, 400 mm long length. The volume of the fuel tank is 400 ml. this guarantees the highest duration of work. As parts that optimize the chainsaw is the vibration system, which is achieved by the method of using long.term steel springs. Safety is ensured using a double brake system.

Partner 350 Chrome: has a 1.9 liter engine.With.\ 1300 watts. Tire length. 400 mm, chain step. 0.325 inches. This significantly increases the productive characteristics of the chainsaw. The volume of the fuel tank is 400 ml. The model is characterized by the highest wear resistance, which is caused by a brilliant coating. Safety provides an inertial type circuit stop.

Diagnosis of magneto

Magneto key node in engine ignition systems. This is the core of the coil, which is surrounded by the primary and then secondary winding. If this part is faulty, there is no spark on the spark plug and the fuel will not light.

Operating principle

When a flywheel spins, an electric current forms in a magneto, creating a spark on a spark plug when the magnets pass under the coil.

The second method

If you cannot use the tester, there is another way to check

In this case, it is important not to touch the cylinder with an electrode, otherwise the coil will be damaged

  • Remove the spark plug lid. Do not unscrew the fork, as this will save compression.
  • Then you need to choose a nail with a cap taken and tightly insert it into the hat.
  • Further, the lid with the nail should be reliably tied to the cylinder by the dielectric. In this case, the electrode should be at a distance of 5.5-7 mm from the cylinder body, but not touch the mass.
  • Then, using the starter, you need to imitate the start of the engine with the ignition button. In this case, you need to carefully monitor the spark, and try to determine its color.

There is one important point that should be taken into account when diagnostics: non.guns of Magnito in any condition can create a powerful spark. However, if it is faulty, then after warming up it will stop creating a current, and the trimmer will not start for the grass. Later, after cooling, the coil returns to the working level, the unoic tractor turns on and works for some time at idle or under load until the temperature of the magneto increases again. In this case, the part must be replaced.

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.

Adjustment of the carburetor of a Chinese lawn mower. Practice.

The correct setting of the carburetor is determined by the engine operation and the color of the candle. Adjusted.

Insidious malfunction of the carburetor of the Chinese lawn mower.

Spare parts for motorcycle repair and adjustment of the carburetor motorcosa.

STIHL, Makita, Husqvarna and others tuned with 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. 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. 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.

6 Комментарии и мнения владельцев on recording adjustment and repair of the carburetor of the lawn mower

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

A lawn mower or a trimmer for ICE grass requires not only a constant refueling of the fuel mixture of gasoline with oil, but also periodic adjustment of this fuel supply. The carburetor is responsible for the supply of fuel to the lawn mower cylinder, the effectiveness and performance of the tool depends on the good operation of which. If in the process of operation a faulty (abnormal) engine operation is detected, then the first step is to adjust the carburetor of the lawn mower. Before setting up a carburetor of a gasoline trimmer for grass, we will first figure it out with its design.

The principle of operation of the carburetor of the lawn mower

The throttle dashes determines the amount of air for supply, and the power of the motor directly depends on this.

Determined by the operation of the motor and by the color of the candle. Adjusted

Self.setting up the carburetor

on the Chinese trimmer, rapidly and simply a layout on

A combustible pump (its membrane) is sucked into the carburetor system. Then passes through the fitting in the carburetor. Then the liquid moves through the intake and exhaust valve of the pump. Filtered with a net. On the needle valve moves into the membrane chamber.

  • Air supply to the tube with an air septum (damper). The partition regulates the intensity of the air flow.
  • The fuel supply system is certainly narrowed by the mixer to accelerate the flow.
  • Gasoline through the float chamber and nozzle with narrowing. The chamber with a float regulates the temporary volume of gasoline. In the float chamber, the pressure level is neutral, and in the tube with narrowing is already small. Thanks to the pressure drop, fuel seeps through a jickler.
  • Acceleration of the air flow contributes to the transfer of fuel (gasoline) and its spray. Ultimately, a fuel mixture of the desired proportion or density appears.
  • The air-fuel mixture seeps into the cylinder of the motor through the fuel tube.

The level of air density in the system depends on the area of ​​the open air damper. The more extensive the damper is open, the greater the fuel consumption and power.

Simply put, adjusting the carburetor on a benzocos. creating a good fuel consistency due to the correct air supply.

Do.it.yourself carburetor adjustment

Regardless of the model of the garden tool, adjusting the carburetor of the trimmer for grass requires careful preliminary preparation. The owner of the motorcycles will need to check the spark plug, air filter and the carburetor itself. In the case of pollution, all elements must be cleaned, or, if necessary, replace.

In the standard configuration of a trimmer for the grass, 3 adjusting bolt are provided. The first of them is marked with the letter L, and serves to configure the engine when it is working at low speeds. The second bolt. is marked with the letter H, and is necessary to adjust the internal combustion engine when it is at the highest speed. The third bolt can be marked with letters T or LA. with its help the operator can configure the engine operation at idle.

The process of configuring the carburetor Motokosa is as follows:

  • First you need to carry out a number of actions with the adjusting bolt L. To do this, it should be turned clockwise until it stops. After this, the bolt L requires to turn half turnover in the opposite direction. This will make it possible to configure the optimal enrichment of the fuel mixture with oxygen during the operation of the motor at low speeds;
  • Then you will need to adjust the operation of the internal combustion engine in idle mode. To do this, you need to turn the bolt T in different directions in turn until the mowing head or knife stops rotating;
  • At the end, you will need to configure the level of fuel enrichment with oxygen when operating the engine at maximum speed. To do this, the bolt H will need to turn clockwise until it stops, and then return it to 1/2 turnover in the opposite direction.

At the end, the operator should drown out a trimmer motor for grass and start it again. If the knot was correctly configured, then the motor motorcycus will confidently gain momentum when pressed on the gas trigger, and quickly discard them when the trigger releases is released.

Husqvarna carburetor adjustment

Before adjusting Husqvarna, make maintenance of a trimmer for grass (wash the lawn mower and engine, replace the spark plug, eliminate minor defects).

Be sure to wash the foam element of the air filter. Wash the element in warm water with soap, then squeeze and dry (or replace it if it is old or damaged).

Note: If you adjust the Husqvarna carburetor with a dirty air filter, then after cleaning the air filter, the fuel mixture will become much poorer (which can lead to poor operation or even engine breakdown). Install a trimmer head with a cord of the maximum permissible diameter and standard length (to a cutting knife in additional protection) to create a load on the engine while adjusting the high speed of the Husqvarna carburetor. Get the lawn mower according to the leadership of Husqvarna and warm for 10 minutes (if at the same time the trimmer head rotates at idle speed, then the idle screw, t.e

Lower, it is necessary to turn counterclockwise until the rotation of the trimmer head stops)

Carefully turn both needles (right and left) in the middle position between fully twisted and completely screwed (do not cure the stopper!, This can lead to breakdown of the Husqvarna engine). Husqvarna carburetor adjusting screws for adjusting the carburetor: right, left and lower

Husqvarna carburetor adjusting screws for adjusting the carburetor: right, left and lower.

1) The right screw l. regulates the enrichment of a mixture of low revolutions (regulated first): Find the maximum idle speed, slowly turning the right screw to the right and left. Then turn this screw on ¼ turn counterclockwise. Note: from the Husqvarna plant, the right screw was completely unscrewed (at 0.5 turnover). Now he is looking at “11 hours”.2.

The adjustment of the idle speed is considered to be correct when:

  • The cold engine is stable at idle.
  • The hot engine has not highly high speed speeds.
  • Before the rotation of the trimmer head, a sufficient supply of revolutions remains.
  • The engine works steadily in any position (for example, with a sharp lowering knife).

Note: from the manufacturer (Husqvarna), the idle screw from the fully twisted, was twisted at 8 full revolutions and “2 hours” (now it remains). Husqvarna.2.recommended idle gas mowing engine. 2.900 rpm.3) Left screw h. regulates the enrichment of a mixture of high revolutions (is regulated last). It regulates maximum speed, engine power, temperature and fuel consumption.

AVED Muffler block placement and adjustments. Shoutout to alexwhocreations!

Note: the Husqvarna engine should not operate at full speed for more than 10 seconds!

  • Open completely the throttle (give full gas) and slowly turn the left screw clockwise until the speed of the Husqvarna engine is reduced (by ear).
  • Then turn the left screw very slowly counterclockwise until the engine starts to work uneven.
  • After that, turn the screw slowly back to a slight distance clockwise until the Husqvarna engine starts to work smoothly.

This is where the HUSQVARNA adjustment is completed.

Note: recommended by the highest possible speed of the Husqvarna engine. 11.500 rpm. The maximum output capacity of the Husqvarna 333R lawners engine is 1.6 kW (2.1 l.With.) at 8.400 rpm.

Note: on the new trimmer Husqvarna from the manufacturer (Husqvarna), the left screw was completely unscrewed (by 0.5 turnover) and blocked (bay) with solid plastic, which I drilled after the guarantee period. Now the left screw (like the right one) looks at 11 hours approximately.

We check the correct settings of the Husqvarna carburetor

The engine is quickly, evenly and confidently gaining momentum, and a little four at maximum speed, the T-35 trimmer head should not rotate at idle.

  • 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. If the braid is at idle, immediately start adjustment: turn the tint t counterclockwise 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 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.

If there is a tonometer, and if the product is the recommended speed of rotation in the product passport, the correction can be made more accurate, focusing attention not on the ear, but on the testimony of the device. The carburetor adjustment by a busbar on the video is made by ear

The carburetor adjustment by a busbar on the video is made by ear.

7 answers to the record “Adjusting and repair of the carburetor of the gasoline engine”

Please explain. Section 5 of the regulation of the screw L is an error? 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

Thank you very much for the video about the accelerator, and I do not know, and this defect is very important and creates a huge problem that almost everyone is silent about. BRAVO….

Perhaps a tachometer. This is a speedometer, not a blood pressure meter.

The heart of any chainsaw is a two.stroke internal combustion engine.

The trimmer for grass does not belong to complex household appliances, so for the most part it is gender.

There was a need to buy reliable and accurate mechanical instructions.

The times of Soviet agro.industrial gigantomania have passed. They made a concert.

The same.based tractor is an economical version of the tractor for small work.

The Neva one.based tractor is now available in various versions, in this specialized.

Chips on the choice

In accordance with the current statistics, it is the gasoline models of mowers that are most in demand. This is largely due to their mobility and functionality. However, when choosing a specific model of technology, it is necessary to take into account a number of other parameters. In such situations, it will be useful to compare motorcycles with other types of trimmers.

Electric devices are connected to a household network with a voltage of 220 V. Such machines do not pollute the air due to the lack of exhaust gases. No less important points will be the minimum noise level and relatively small weight. At the same time, the processed area is significantly limited.

The battery models today are the least common trimmers for grass for grass. The electric engine of such mowers does not feed from the network, but from the battery, which provides maximum mobility. However, the operating time of the equipment is limited by the battery charge and is an average of 35-45 minutes. Another important point is the relatively high cost of battery models.

When choosing a specific model of a gasoline trimmer for grass, it is necessary to take into account its technical characteristics. So, low.power devices are equipped with coils with a fishing line. On more reserved and powerful models, knives and cutters can be used as cutting elements

On more reserved and powerful models, knives and cutters can be used as cutting elements.

Common malfunctions of carburetors

Damage of the carburetor of the trimmer for grass occurs due to the use of poor quality gasoline, damaged air filter and the accumulation of dirt in the chamber of this block. Most often, it is quite possible to repair a carburetor with your own hands. Below listed typical malfunctions of the carburetor motorcosa.

Problems of the fuel pump

A common malfunction that “pursues” the fuel pump is a deformation of the pump membrane. For this reason, it does not fit properly, and the pumping canals are not compacted.

The reasons for the deformation of the membrane can be as follows:

As a result, damage to the membrane reduces the productivity of the pump, and, as a result:

  • the flammable mixture is impoverished;
  • The engine is difficult to launch;
  • interruptions in the work of the motor appear;
  • The piston is damaged.

Also, the above consequences for the engine can cause clogging of the pump cavity from the pulse side. In this case, dirt enters the membrane through the pulse channel.

To eliminate clogging, you will have to disassemble the carburetor and clean the membrane.

Clogging of the mesh filter

A mesh filter can be contaminated when contaminated fuel is received through a fuel hose or a suction head that has defects. In the photo below you can see how a clean filter and contaminated (parts are separated by a feature).

To eliminate the malfunction, thorough cleaning and flushing of the mesh filter will be required. It is also recommended to blow with compressed air all holes in the body of the carburetor trimmer for grass.

The adjusting lever is faulty

This breakdown appears when the contact surface of the lever wears out.

Washing the contact surface occurs due to the presence of abrasive particles in gasoline or due to strong vibration of the motor during operation. This defect in the adjusting lever causes problems with the inlet, as well as incorrect operation of the motor at idle.

Wear of the intake needle

The inlet needle fails, as a rule, due to the presence of abrasive particles in the fuel fluid.

  • The insurance of the saddle of the intake needle is violated;
  • the leakage of the combustible mixture appears;
  • malfunctions in the operation of the engine associated with re.enrichment of the fuel mixture appear.

Also, the intake needle can simply jam.

Singing an intake needle can cause the presence of dirt in a combustible, or a long simple apparatus without work.

Clogging of the adjusting cavity

If dirt accumulates in the adjusting cavity, then the inlet needle cannot lock the hole tightly and a lot of fuel pours into the chamber.

This causes fuel rewriting, and the engine begins to work incorrectly. It is necessary to disassemble the carburetor and clean the cavity of the adjusting membrane.

Deformation of the adjusting membrane

The membrane may be deformed with prolonged operation of the unit and when using aggressive fuel.

The impossibility of normal adjustment due to the defect leads to:

The problem with the intake adjustment lever

This problem may occur if the adjusting lever is incorrectly, or bend it before installation. As a result, the contact surface takes the wrong position, which violates the additional fuel supply.

Damage to the damper

Throttle and air shutters basically wear out due to the presence of abrasive particles in the air. Defective shutters look as if they were subjected to sandblasting.

As a result of wear of the damper, the engine performance decreases, malfunctions appear in its operation, piston rings, piston and cylinder coating wear out.

Wear of the throttle and air damn

The shaft of air and throttle can wear out for the following reasons:

  • insufficient and incorrect air filter maintenance;
  • The air filter is damaged;
  • The air filter is unsuitable for this device.

Due to the ingress of poorly purified air, the shaft wears out and may break. The broken parts of the shaft can fall into the combustion chamber or the engine of the engine and cause serious damage to the entire piston system.

To eliminate problems with air purification, it is necessary to replace a defective filter or rinse the existing (working). The filter must be washed in soapy water and dried.