Husqvarna 137 Starts And Stalls Reasons

Table of Contents:

What to do if the chainsaw starts and stalls

Chainsaw owners sometimes have to deal with the fact that the saw, for no apparent reason, stops working normally. To understand why the chainsaw stalls under various operating modes, and also describe how to diagnose a malfunction, we will try in our article.

Why chainsaw stalls when heated

The situation in which a chainsaw starts up in the cold, and during heating can stall, is familiar to many who deal with them. The main reasons for this saw behavior are as follows.

  • Faulty ignition module (coil). You can determine the malfunction by checking the spark first on a cold engine, and then on a hot one. If there is no spark on a hot engine, then you should try to fix the problem by replacing the ignition coil.
    Husqvarna 137 Starts And Stalls Reasons
  • The chainsaw carburetor has the wrong setting (pours a candle on a hot one). You can identify the problem by the way the saw starts up in the cold. If it is not necessary to close the air damper for a cold start, and the engine starts without a preliminary flash, then the fuel mixture is not formed correctly and after heating the engine, the fuel fills the candle and makes starting impossible. The problem is fixed by adjusting the carburetor.
  • Defective spark plug. In such a situation, similarly to a faulty ignition coil, a spark disappears when the engine is heated. It is worth trying to replace the spark plug with a new one, and if this does not help, then you need to check the ignition coil and the gap between it and the flywheel.

You can check the ignition coil with a multimeter or by replacing it with a known working one. The multimeter checks the primary and secondary windings in the resistance measurement mode. The resistance index of the primary winding, the working coil, is 1 kOhm. secondary 4 kOhm.

Why the chainsaw stalls under load

In some cases, the chainsaw under load is unable to work normally and simply stalls. A common reason for this behavior is incorrect carburetor adjustment, or air leaks through the crankshaft oil seals or carburetor gasket. And also this behavior can occur due to leaking carburetor.

Diagnose the cause and eliminate the fact that the chainsaw starts and stalls under load, it is best in the service center, because a special tool is needed to check the tightness of the carburetor and crankcase.

The saw, unable to work under load, will also hesitate to maintain idle speed. They will "swim." Diagnostics begins with a leak test of the crankcase and carburetor. If air leakage is detected through the crankshaft oil seals, they must be replaced. If air leakage is detected in the carburetor, the cause can be eliminated by installing a repair gasket kit.

Only after the above actions have failed and the engine crankcase with the carburetor are tight, you can proceed to adjust the carburetor.

The reason for this algorithm is as follows: if the air intake from the crankcase has not been eliminated, and the carburetor has simply been adjusted before the engine is operating normally, the fuel mixture will contain more fuel than is required for a sealed crankcase, which in turn will significantly increase its consumption. Also, most likely, carbon deposits will appear in the engine, which will also adversely affect the further operation of the chainsaw.

In some models of chainsaws, to ensure the operation of the fuel pump, special hoses are installed that transmit air impulse from the crankcase to the carburetor fuel pump. If this hose is frayed, the saw will idle and will not work under load at all.

Owners of household chainsaws HUSQVARNA 137 and HUSQVARNA 142 for any abnormal engine operation should first check the impulse hose, since this is considered the most common cause of breakdown of these chainsaws.

A video showing how to replace a defective impulse hose with your own hands on a HUSQVARNA 142 chainsaw can be seen below. It steps through the process of disassembling the saw, shows the impulse hose and stipulates the consequences of its malfunctioning HUSQVARNA 142.

Why the chainsaw is not gaining momentum and stalls

If the chainsaw, one minute after start-up, is not capable of gaining speed or stalls when the trigger is pulled, the carburetor or engine crankcase is most likely leaky. As in the previous case, the problem can be solved by checking for leaks and adjusting the carburetor.

If the chainsaw does not gain momentum and stalls after it has worked normally for about 5 minutes, the cause may be a defective fuel tank breather. The vacuum created in the fuel tank during the operation of the tool does not allow the engine to receive the necessary amount of fuel for its normal operation, and for this reason it will be unable to gain speed or stall. At the same time, if you stop the tool, open and close the fuel tank cap and start the chainsaw again, the tool will again work normally for about five minutes, after which it will stop gaining speed or stall.

The reason that the chainsaw is not gaining momentum may be excessive soot in the muffler, which makes it difficult to exhaust the exhaust gas, thereby reducing engine power and speed.

If you wish, you need to check the tightness of the crankcase, but the lack of a special tool, you can use the following test procedure.

Crankcase leak check algorithm

  • Remove the side cover and tire from the chainsaw.
  • Unscrew the spark plug and lay the cord with the knots in the cylinder through the spark plug hole, thereby blocking the movement of the piston and crankshaft.
  • As a lace with knots, you can use the old cord from the starter, having tied knots on it after 3-5 cm.
  • Unscrew the drive sprocket for the chainsaw.
  • Remove the oil pump cover and the pump itself.
  • Remove the starter from the chainsaw.
  • Unscrew and remove the flywheel.
  • Remove the carburetor.
  • Using a syringe, pour gasoline into the crankcase through the hole for the carburetor in the cylinder, while observing the crankshaft oil seals. If gasoline flows through them, then the oil seals have become unusable and must be replaced with new ones.
  • It is better to entrust the installation of oil seals to professionals.

An indirect sign of crankcase leaks are oil smudges in the oil seal area.

Why the chainsaw starts and immediately stalls

The chainsaw starts and stalls immediately, the reason for this behavior may be hidden in the carburetor. A malfunction of the fuel pump or a malfunction of the main fuel jet can cause this behavior of the saw. The inability to operate the chainsaw after startup requires a complete diagnosis at the service center.

All of the above options for improper engine operation have similar causes, which, depending on their neglect, can have different manifestations. For example, with a slight suction of air into the engine crankcase, its operation will not change much, the engine power will drop slightly, its maximum speed will increase, and it will be able to warm up a bit more. In the middle stages of air leakage, the engine will stop idling and will become very hot during operation. A strong suction of air will make the saw impossible to work, it will start and immediately stall.

In parallel with the visible manifestations of malfunctions, for example, the inoperability of the chainsaw after starting, inside the engine at the time of its malfunction, there will be processes that irreversibly lead the saw to the most serious consequences, for example, fusion of the piston, jamming of the crankshaft.

Failures leading to malfunction of the chainsaw

There are a number of malfunctions that must be taken into account in the diagnosis, because they can lead to interruptions in the saw.

  1. Worn crankshaft bearings. With worn crankshaft bearings, a beating on the main shaft where the flywheel is mounted is inevitable. In such a situation, it is impossible to adjust the gap between the flywheel and the ignition coil, which entails interruptions in spark formation, and unstable operation of the chainsaw.
  2. Impulse channel pollution. The pulse channel serves to ensure the operation of the fuel pump; accordingly, its pollution leads to improper operation of the pump, which will make the saw impossible to work (it will start and immediately stall).
  3. CPG wear. As a rule, with increased wear of the CPG, a decrease in compression in the chainsaw engine is observed, which will necessarily affect its ability to develop speed.
  4. Pollution of fuel and air filters.

To summarize

When the first signs of malfunction of the chainsaw appear, it is worthwhile to conduct a complete diagnosis. In order to avoid damage to the saw due to improper maintenance, it is better to entrust the work to identify and troubleshoot engine malfunctions to professionals. And most importantly, you do not need to use a chainsaw with minor defects, because this will lead to even greater problems.

For what reasons the chainsaw stalls

The main causes of chainsaw damage

Although the chainsaw is a simple device, from time to time there are problems in its operation, which can be eliminated only by disassembling. The following faults can be cited as examples:

  • chainsaw is not gaining momentum;
  • chainsaw ceases to function in the cut;
  • the chainsaw starts and stalls;
  • chainsaw loses its power;
  • chainsaw stalls when pressed.

Most often, malfunctions are associated with interruptions in the functioning of the motor, as well as with malfunctions of other systems and nodes. Of great importance is the proper handling of this technique. When all the rules of use are followed, the problems with a high probability lie in the most obvious. When searching for the causes of malfunctions, it is advisable to start by checking the simplest part of the chainsaw and ending with the most difficult.

Checking the main chainsaw systems

If the chainsaw refuses to work normally, you need to make sure that all the conditions required for its normal functioning are provided:

Then it is necessary to consistently check the functioning of all its elements. First you need to check the fuel tank. If the cause is not in volume and not in fuel quality, then the spark plugs may be the probable cause of the malfunction. The clearance at the candle should not exceed 0.5 millimeters. If it is too small, it means that soot has deposited on candles. In this case, remove the candles, clean them, and then reinstall them and try to start the chainsaw. In addition, it is advisable from time to time to completely replace the candles with new ones, even if they are in good condition.

Then you need to check the condition of the fuel filter and carburetor. Self-cleaning the fuel filter is a simple task, but the carburetor repair is best left to specialists.

Chainsaw starts and stalls. reason

If the chainsaw starts and stalls When trying to do the job for the first time, the cause may be a problem with the chain brake or its jamming due to lack of lubrication. In this case, measure the oil level. If the amount of lubricant is sufficient, the cause may be a tube that leads to the lubrication mechanism.

Another reason could be a carburetor breakdown. If he needs only adjustment, it can be done independently in accordance with the instructions. If the carburetor needs to be cleaned or repaired, then do not do without the help of professionals.

Another possible cause of this malfunction is the low fuel level in the tank. In this case, the chainsaw stalls when tilted, since the remainder of the fuel mixture is in the part of the tank opposite to the place where the suction tube is located.

Why chainsaw stalls when heated

It often happens that a chainsaw starts up cold, but stalls during heating. This behavior of the tool can be caused by the following reasons:

  • The carburetor is incorrectly configured. This problem can be identified by how the device starts up to a cold one. If it is done without closing the air damper, and the engine starts without a preliminary flash, this means that after heating the engine, fuel fills the spark plug. The solution to this problem is to adjust the carburetor. Carburettor Adjustment Details
  • Malfunction of the coil (ignition module). This problem can be detected by sequentially checking the spark first on a cold, and then on a hot motor. If there is no spark on a hot engine, then the ignition coil must be replaced.
  • Faulty spark plug. In this situation, as with a malfunction of the ignition module, the spark disappears when the engine is heated. It is necessary to replace the spark plug with a new one, and if this does not lead to a solution of the problem, then the ignition module and the distance between it and the flywheel should be checked.

Why the chainsaw stalls under load

Sometimes a chainsaw is unable to function normally under load. Most often, this is caused by improper adjustment or leaking carburetor. In addition, the cause of this problem may be air leaks through the carburetor gasket or crankshaft oil seals. A tool that is unable to function under load also cannot confidently maintain idle speed.

Diagnostics begins by checking the carburetor and crankcase for leaks. If air leaks are detected through the crankshaft oil seals, their replacement is required. If air leaks are detected in the carburetor, a repair kit for the gaskets is required to solve the problem.

If these actions do not lead to the desired result and the crankcase of the engine with the carburetor is tight, then you need to adjust the carburetor.

If the Husqvarna chainsaw stalls under load, then for any abnormalities in the functioning of the motor, first of all, check the impulse hose, as this is the most common cause of breakage of chainsaws of this brand.

What to do if a chainsaw dies when you press the gas

One of the most common questions regarding the operation of this device: why does the chainsaw stall when you press the gas and what needs to be done to solve this problem? In this situation, you must perform the following steps:

  • check fuel filter;
  • inspect fuel hoses for leaks;
  • check the muffler;
  • try to add a little speed;
  • check the condition of the rubber seals on the crankshaft.

Why the chainsaw is not gaining momentum and stalls

If the saw cannot gain momentum or stalls when you press the gas, then most likely this is caused not by the tightness of the carburetor or the crankcase. This problem is resolved by checking for leaks and adjusting the carburetor.

In addition, this malfunction may be due to a defect in the fuel tank breather. Due to the formation of vacuum in the fuel tank during the operation of the chainsaw, the required volume of the fuel mixture does not enter the engine, as a result of which it cannot gain speed or stall. If you stop the chainsaw, open and close the fuel tank and turn it on again, it will normally work for about five minutes, and then again will cease to gain speed or stall.

Another possible reason that the chainsaw is not able to gain speed may be an excess of soot in the muffler, which makes it difficult to exhaust the exhaust gas, which reduces the power and speed of the motor.

Why the chainsaw starts and stalls

A chainsaw has long been not a luxury, but a necessary tool for those who have a summer cottage or home ownership. But, like any other technique, this tool has the ability to fail, despite the simple device.

The classification of major faults includes:

  • complete lack of engine plant
  • engine starts and stalls
  • unstable tool operation
  • work stop at load
  • power loss.

If the chainsaw does not start at all, the reason may be as follows:

  1. Manufacturing defect
  2. Lack of fuel
  3. Problems starting the ignition system
  4. No spark from spark plugs
  5. Poor fuel mixture
  6. Carb blocker
  7. Problems with high voltage wire
  8. Lack of compression.

Why does the chainsaw start and stall, what should I do in this case? It is necessary to consider in detail the reasons for this.

Chainsaw starts and stalls: reason, video

The reason that the chainsaw may stall right after the factory is due to a malfunction of a certain part of the equipment.

  1. The most common reason why the chainsaw is wound up and stalled may be the low fuel level in the tank. This can be confirmed by stopping the tool when tilted, when the remaining fuel accumulates in a certain place in the fuel tank. With low-quality fuel, a problem with the operation of the chainsaw may also occur, in which case it must be completely replaced.
  2. Clogged breather, which significantly reduces fuel consumption to the engine.
  3. Insufficient contact of the cap of the wire with the candle, which leads to strong heating of the insulator of the candle. Contact deterioration may occur due to mechanical shear or carbon deposits.
  4. Damage to spark plugs.
  5. Muffler clogging, due to which the exhaust gas output deteriorates, leading to engine shutdown. For this reason, the chainsaw may start and stall at idle. Sludge in the silencer can also occur due to poor fuel or improper use of the tool.
  6. Poor carb adjustment.
  7. Piston group breakdown
  8. Problems with the fuel filter or pump. In this case, gasoline may leak through the pump or leak poorly through the fuel filter to the carburetor. As a result, the chainsaw starts and stalls with increasing speed.
  9. Air filter is dirty. Problems with this element of equipment lead to the fact that, with increased loads on the engine, it simply can not cope with them due to clogging and stops. A similar result is also obtained with an increase in speed.
  10. Short circuit due to lack or insufficient lubrication, as well as a problem with the chain brake.

Why the chainsaw starts up badly and stalls

With a poor start up of the equipment “on a cold”, the problem may be in the absence of compression, i.e. the rings are worn out due to the long service life, their replacement is required. Sometimes the reason that the engine starts poorly in an unheated state is a problem with the muffler, as well as poor contact between the spark plug and the wire.

Also, the reasons for a poor start can be wear or damage to the gasket, rubber cuff in the carburetor accelerator pump, due to which there is an additional flow of air, leading to an increase in the speed of the saw.

Troubleshooting

The operation of the equipment must be correct, with periodic inspection of the constituent elements to prevent breakage. To troubleshoot, it is necessary to check all components of the equipment for their functioning.

If the chainsaw starts and dies, the cause can be eliminated on its own. If it is a shortage or improperly prepared fuel mixture, you need to fix it. For prophylaxis during the idle time of the chainsaw, you should always drain the remaining fuel.

It is necessary to carry out periodic check of spark plugs. In this case, remove carbon deposits that clog the joint gap, and also check the tips for fuel. Another cause of malfunctions with spark plugs can be their wetting with gasoline. To do this, they need to be removed, wiped with rags and left to dry. Defective candles are replaced.

If there is no spark between the spark plug and the high-voltage wire, but if they are well connected, the ignition unit must be replaced.

Muffler clogging is a common cause of failure, in which the chainsaw starts and immediately dies. To eliminate the malfunction, it is necessary to dismantle the muffler, clean it from soot using sandpaper or a special chemical solution. If the chainsaw model is not separable, chemicals are poured into the system and are there for several hours, then it is blown.

The carburetor must be adjusted if the chainsaw stalls idling. Fine tuning is quite a time-consuming process, so it is usually done at service centers. But, on some models there are elements for its adjustment, it is enough to turn the bolt half a turn to increase the revolutions of the chainsaw, the problems will be eliminated. If the nozzles, nozzles, channels and filters are clogged, the entire carburetor must be disassembled and cleaned. When the seals, gaskets, cuffs are worn, it is necessary to replace them, preventing the "suction" of air.

If you have problems with the fuel or air filter, you must replace the fuel pump or clean the air filter.

If the breather is clogged, clean it with a regular needle.

When the chainsaw starts and immediately dies, the cause may be a malfunction of the chain. To eliminate problems, the presence of oil in the chain lubrication tank is checked, as well as the oil exhaust pipe for breaks or blockages.

When inspecting the piston group, you should pay attention to the cylinder, if necessary, replace it or the piston. You can bore the cylinder to fit the dimensions of the new piston. If the piston with the cylinder is normal, you should pay attention to the defects of the piston rings and the need to replace them.

Read more:  How To Swap A Coil For A Husqvarna 128r Trimmer

Among other things, it is necessary to control the service life of the parts indicated in the product passport, which includes the drive sprocket, tire, chain, part of the anti-vibration system, and replace them in time.

With a long idle time, it is worth checking the condition of the fuel line. If the tube is cracked, you will have to replace it with a new one.

Why does the chainsaw stall? Reasons and their elimination.

What to do if a chainsaw stalls? Many owners of chainsaws know the most weak points of their tool, however, a situation may arise when the cause could not be found right away.
Also, this manual will be useful to those who have recently purchased a chainsaw.

ATTENTION! If you did not find your reason in the list below, you can ask your question in the comments.
So, the chainsaw stalled. The reasons can be quite a lot, because although it’s not a saw and a Formula 1 car, it is a technical device. Here, the main condition for a successful repair will be an accurate diagnosis of the malfunction.
Do not immediately start disassembling the chainsaw, first you need to check the simplest possible causes of the malfunction. Consider the sample steps to verify the possible cause of the malfunction.

(This is the second edition of this article, in which I will try to describe in detail as many details as possible.)

If you do not have a chainsaw, then read more here:

Troubleshooting

If the chainsaw stalls for no apparent reason and it is not possible to establish even approximately possible malfunctions, then it is worth going through successively for all possible reasons. Of course, there are typical, standard malfunctions, which we will talk about below, but for now, go step by step!

1.Check the fuel mixture.

Firstly, it must be prepared according to the manufacturer’s recommendations and using quality components. Secondly, run the tank completely or empty the fuel mixture before long downtime or conservation between seasons. Read more about fuel here:

2.Clean or replace the air filter.

A contaminated air filter does not allow air to be supplied in the volume that the normal operation of the chainsaw is designed for. That is, if the carburetor that mixes the air and the fuel mixture has been adjusted with one amount of incoming air, then when the air filter is dirty, the amount of air decreases, and the settings remain the same and as a result we get an enriched working mixture.

It will not be superfluous to read:

3.Check the candle.

There may also be several subitems. The first step is to unscrew the chainsaw candle and check if it was flooded during launch attempts. Especially often this occurs when a chainsaw is started by inexperienced users who do not follow the sequence to start the saw in the cold. In this case, you need to dry the candle or screw in a new one and try again according to the instructions. The tip of the candle may fail. You can check this by unscrewing the candle and inserting it into the tip, put it on the block and pull the starter cord a couple of times. If there is a spark, then the candle and other electrics are in order.

Another step in checking a candle is to check the clearance on the candle and for carbon deposits. See the manufacturer’s recommendations for clearance. As a rule, this is from 0.5 to 0.65 mm.
Carbon from a candle is cleaned with fine-grained emery paper or a metal brush. Read more about candles here:

4. Check the fuel filter.

As with the air filter, the situation with the fuel filter leads to a change in the composition of the working mixture. Only if the air is contaminated does the mixture become richer, and when the fuel is contaminated, on the contrary, it becomes poorer. The engine of the chainsaw will not work with insufficient fuel in the working mixture. In addition, with a clogged fuel filter, the uniform supply of fuel to the carburetor and then to the combustion chamber is disrupted. This is especially noticeable when the chainsaw stalls when you press the gas.

5. Check the breather.

WITH

Breather is a non-return valve, which is located in the gas tank of the chainsaw and prevents the occurrence of vacuum in the tank. If it is clogged, instead of the used fuel mixture, air does not enter and the fuel pump cannot cope with the fuel supply.

Often there is a situation when a primer (a pump for pre-pumping fuel) was pumped into the carburetor, a chainsaw started up. After the fuel supply in the carburetor is exhausted, and in view of the clogged breather fuel is not supplied, the chainsaw stalls.

6.Carburetor check

In 50% of cases, if not even more, the reason that the chainsaw stalls is an incorrectly configured or malfunctioning carburetor.

Read about carburetor setup here: https://benzopilatut.ru/benzopila-husqvarna-xuskvarna-137-regulirovka-karbyuratora

What kind of malfunctions can a carburetor conceal?

  • Clogged nozzles, nozzles, filter, channels. With the “quality” of domestic fuel, the fuel filter often does not cope with its responsibilities for cleaning gasoline from dirt, debris, and impurities. In this case, the nozzles get clogged, and the fuel is either not supplied enough or not at all. Often, a chainsaw at the same time noticeably loses in power. It is necessary to disassemble and clean the carburetor. Remember that the carburetor consists of small and very small parts! Therefore, before disassembling thereof, prepare a place in advance!
  • The needle of the accelerator pump sinks. Often, as a result of wear or contact with foreign objects, the needle of the accelerator pump may “sink”. In this case, the chainsaw may simply not start, work unstably or stall for no apparent reason at any time.
  • The check valve needle does not fit snugly into the seat. In this case, it will fill the candle, the saw will be unstable or stall under load. It’s very difficult to rub the needle into the valve seat! It’s often easier to replace a carburetor.
  • Wear or damage to the rubber cuff in the accelerator pump. If cracks appeared on the cuff or if it was damaged, say during parsing, then additional air flow will begin (“suction”). This in turn will lead first to an increase in speed, and then the chainsaw simply stalls. All that is required is a replacement cuff.
  • Sometimes it happens that it starts to “suck” air from under the carburetor gasket. It is often very difficult to determine exactly where the “leakage” is and in this case, you may have to change all possible seals and gaskets.

7.Checking of hoses, gaskets, gaskets

One of the most common problems due to which the chainsaw stalls or fails to start is air leaks. The saw can suck in air in many different places. Check in order:

  • Fuel hoses. Often from time to time or when using substandard materials, micro, and not micro, cracks can form in the fuel hoses. You can identify them in most cases by visual inspection. It is also worth inspecting the hose attachment points. If the hose does not fit snugly, then there may be a place for suction.
  • Oil seals. Even the highest quality seals can, under the influence of time and during operation, lose their tightness. In this case, the quality of the mixture is impaired and the saw either works unstably, or starts and stalls. How to check the chainsaw seals? There are only two of them and both are mounted on the crankshaft. In order to check their tightness at home, I know of two options: 1. Check them by supplying air under pressure. This can be done with a compressor, better than a stationary one, but you can use a car. It is necessary to plug all openings, namely the outlet from the muffler and the inlet from the carburetor. We unscrew the candle and apply air under pressure. If pressure is not created or you just hear a hiss, then this is a clear sign that the seals must be changed. 2. You can check with a special device. details on the video:
  • Gaskets can also cause air leaks. Most often, they are damaged during unskilled repair of a chainsaw. If you recently assembled and disassembled your saw, then it is very likely that air leaks occurred precisely as a result of damage to the gasket, or its incorrect installation.
Video on how to check the tightness of the crankcase

8.Muffler check

As a result of prolonged operation, especially if the fuel mixture is prepared with excess oil in the muffler, deposits are formed that impede the free flow of exhaust gases. In this case, clean the muffler.

Video on how to remove the chainsaw muffler

9. Failure of the cylinder-piston group (CPG)

This is probably the most unpleasant of the breakdowns that are possible in a chainsaw. Often the cost of replacing the CPG can exceed the cost of half the entire chainsaw! This is especially true for professional models. In our case, when we consider the reasons why a chainsaw can stall, troubles can cause seizures on the walls of the cylinder and piston. This can be checked by removing the muffler and visually inspecting the surface of the cylinder and piston. In most cases, seizures occur precisely from the side of the muffler, but sometimes there may be a reverse picture. Keep this in mind!

CPG Diagnostics Video

Recommendations Be sure to produce all gasoline before preserving the chainsaw for the winter or just a long time. Properly dilute gasoline with oil (more on this here).

Here are perhaps the main reasons why a chainsaw can stall. In case these recommendations did not help you, then describe the symptoms in the comments. We will help!

Frequently Asked Questions about Chainsaw Failures and Solutions

Chainsaw stalls when you press the gas

One of the most common questions. In this case, you must:

  • Check fuel filter.
  • Inspect fuel hoses for leaks.
  • Check the silencer.
  • Try to add a little twist of the twentieth.
  • Look at the rubber seals on the crankshaft, the spacer between the carburetor and the cylinder.
Chainsaw stalls "hot"

If the chainsaw starts well until it is warmed up, and after it has warmed up it starts to stall and does not start until it cools down, then the problem may be as follows:

  • Check if there is any leakage (hoses, gaskets, gaskets)
  • See muffler for carbon deposits.
  • Check the CPG (cylinder-piston group) for scoring.
  • Check carburetor settings
  • It is also possible that the ignition coil is out of order. When the saw heats up, resistance increases and the spark either gets lost or becomes so weak that its power is not enough to ignite the mixture.
Chainsaw stalls after releasing "gas"

In this case, either carburetor adjustment is required, or somewhere there is a powerful air intake.

Chainsaw throws fuel into the air filter

Carburetor repair or replacement required.

Chainsaw stalls under load

If your saw starts up well, works both at idle and with the addition of "gas", but it is barely worth the load to stall, then the following steps should be taken:

  • Check fuel filter
  • Adjust carburetor
  • Check hoses, gaskets and oil seals for leakage.
  • Check clutch operation
The chainsaw stalls after a while

In this case, there may be two reasons:

  • Air leaks
  • Clogged breather in the gas tank

Saw Husqvarna Starts up Stalls. NZIZN.RU

Chainsaw starts and stalls cause

From time to time, owners of chainsaws have to deal with the fact that the saw, for no apparent reason, ceases to work normally. We will try to figure out why the chainsaw stalls under different operating modes, and also outline how to diagnose a malfunction, in our article.

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Why chainsaw stalls when heated

The situation in which a chainsaw starts up to a cool one, and can stall during heating, is familiar to many who deal with them. The main prerequisites for such saw behavior are subsequent.

  • Faulty ignition module (coil). You can find the fault by checking the spark first on a cool engine, and then on a hot one. If there is no spark on a hot engine, it means you should try to remove the fault by replacing the ignition coil.
  • The chainsaw carburetor has an incorrect setting (pours a candle on a hot one). You can find the problem by the way the saw starts to cool. If for a cool start it is not necessary to close the air damper, and the engine starts without a preliminary flash, it means the fuel mixture is not formed correctly and after heating the engine, the fuel fills the candle and makes the start-up impossible. The problem is eliminated by adjusting the carburetor.
  • Defective spark plug. For what reasons does the chainsaw start and stall? It immediately stalls. Saw stalls with. In this situation, similarly to a faulty ignition coil, a spark is lost when the motor is heated. It is worth trying to change the spark plug to the newest, and if this did not help, then you need to check the ignition coil and the gap between it and the flywheel.

You can check the ignition coil with a multimeter or by replacing it with a pre-functional one. The multimeter checks the primary and secondary windings in the resistance measurement mode. The resistance index of the primary winding, the working coil, is 1 kOhm. secondary 4 kOhm.

Why the chainsaw stalls under load

In some cases, a chainsaw under load is unable to work normally and simply stalls. A common reason for this behavior is incorrect carburetor adjustment, or air leaks through gaskets crankshaft or carburetor gasket. Also, this behavior may occur due to leaking carburetor.

Diagnose the cause and remove what the chainsaw starts up and stalls under load, it is ideal in a service center, because a special tool is needed to check the density of the carburetor and the engine crankcase.

Saw Unable to work under load, it will also hesitate to delay idle speed. They will "swim." Diagnostics begins with a check for the density of the crankcase and carburetor. If detected air leaks through crankshaft oil seals, they need to be changed. If air leakage is detected in the carburetor, you can remove the cause by installing a repair set of gaskets.

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Video: Husqvarna 137 Starts And Stalls Reasons


Chainsaw or electric saw: we make the right choiceEvery professional builder and home foreman should be careful about choosing a saw. Indeed, for a certain type of work, both an electric saw and a chainsaw can be a perfect solution. Such ins.

Only after the above acts have not yielded results and the engine crankcase with the carburetor are tight, you can begin to adjust the carburetor.

The reason for this method in the following, if air leaks if the carburetor was simply adjusted to normal engine operation, the fuel mixture will contain more fuel than is required for a sealed crankcase, which in turn will significantly increase its consumption. Also, most likely, soot will appear in the engine, which will also adversely affect the upcoming work of the chainsaw.

In some models of chainsaws, to ensure the operation of the fuel pump, special hoses are installed that transmit air impulse from the crankcase to the carburetor fuel pump. But sometimes the chainsaw starts and stalls, the saw stalls with an increase in load at. If this hose is frayed, the saw will idle and will not work under load at all.

Chainsaw starts and stalls

Chainsaw does not work stalls. Do not cut sick. As much as you can about the secret here it is.

Husqvarna. It works badly, it stalls. An interesting case

Chainsaw Repair Husqvarna.It works badlystalls.Interesting case.

Owners of household chainsaws HUSQVARNA 137 and HUSQVARNA 142 for any abnormal engine operation should first check the impulse hose, since this is considered the most common cause of breakdown of these chainsaws.

A video showing how to replace a defective impulse hose with your own hands on a HUSQVARNA 142 chainsaw can be seen below. It steps through the process of disassembling the saw, shows the impulse hose and stipulates the consequences of its malfunctioning HUSQVARNA 142.

Why chainsaw does not gain momentum and stalls

If the chainsaw is not able to gain momentum one minute after start-up, or stalls when you press the trigger, most likely, the carburetor or engine crankcase is leaking. As in the previous case, the problem can be solved by checking for leaks and adjusting the carburetor.

If the chainsaw does not gain momentum and stalls after it has worked normally for about 5 minutes, the cause may be a defective fuel tank breather. The vacuum created in the fuel tank during the operation of the tool does not allow the engine to receive the necessary amount of fuel for its normal operation, and for this reason it will be unable to gain speed or stall. At the same time, if you stop the tool, open and close the fuel tank cap and start the chainsaw again, the tool will again work normally for about five minutes, after which it will stop gaining speed or stall.

The reason that the chainsaw is not gaining momentum may be excessive soot in the muffler, which makes it difficult to exhaust the exhaust gas, thereby reducing engine power and speed.

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If you wish, you need to check the tightness of the crankcase, but the lack of a special tool, you can use the following test procedure.

Crankcase leak check algorithm

  • Remove the side cover and tire from the chainsaw.
  • Unscrew the spark plug and lay the cord with the knots in the cylinder through the spark plug hole, thereby blocking the movement of the piston and crankshaft.
  • As a lace with knots, you can use the old cord from the starter, having tied knots on it after 3-5 cm.
  • Unscrew the drive sprocket for the chainsaw.
  • Remove the oil pump cover and the pump itself.
  • Remove the starter from the chainsaw.
  • Unscrew and remove the flywheel.
  • Remove the carburetor.
  • Using a syringe, pour gasoline into the crankcase through the hole for the carburetor in the cylinder, while observing the crankshaft oil seals. If gasoline flows through them, then the oil seals have become unusable and must be replaced with new ones.
  • It is better to entrust the installation of oil seals to professionals.

An indirect sign of crankcase leaks are oil smudges in the oil seal area.

Why the chainsaw starts and immediately stalls

The chainsaw starts and stalls immediately, the reason for this behavior may be hidden in the carburetor. A malfunction of the fuel pump or a malfunction of the main fuel jet can cause this behavior of the saw. The inability to operate the chainsaw after startup requires a complete diagnosis at the service center.

All of the above options for improper engine operation have similar causes, which, depending on their neglect, can have different manifestations. For example, with a slight suction of air into the engine crankcase, its operation will not change much, the engine power will drop slightly, its maximum speed will increase, and it will be able to warm up a bit more. In the middle stages of air leakage, the engine will stop idling and will become very hot during operation. A strong suction of air will make the saw impossible to work, it will start and immediately stall.

In parallel with the visible manifestations of malfunctions, for example, the inoperability of the chainsaw after starting, inside the engine at the time of its malfunction, there will be processes that irreversibly lead the saw to the most serious consequences, for example, fusion of the piston, jamming of the crankshaft.

Failures leading to malfunction of the chainsaw

There are a number of malfunctions that must be taken into account in the diagnosis, because they can lead to interruptions in the saw.

  1. Bearing wear crankshaft. With worn crankshaft bearings, a beating on the main shaft where the flywheel is mounted is inevitable. In such a situation, it is impossible to adjust the gap between the flywheel and the ignition coil, which entails interruptions in spark formation, and unstable operation of the chainsaw.
  2. Impulse channel pollution. The pulse channel serves to ensure the operation of the fuel pump; accordingly, its pollution leads to improper operation of the pump, which will make the saw impossible to work (it will start and immediately stall).
  3. CPG wear. As a rule, with increased wear of the CPG, a decrease in compression in the chainsaw engine is observed, which will necessarily affect its ability to develop speed.
  4. Pollution of fuel and air filters.

To summarize

When the first signs of malfunction of the chainsaw appear, it is worthwhile to conduct a complete diagnosis. Sometimes the saw stalls at idle, that the chainsaw starts without problems without. In order to avoid damage to the saw due to improper maintenance, it is better to entrust the work to identify and troubleshoot engine malfunctions to professionals. And most importantly, you do not need to use a chainsaw with minor defects, because this will lead to even greater problems.

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the reason how to eliminate when you press the gas, Husqvarna-137 at idle does not start under load

There are frequent cases when owners of chainsaws encounter their breakdown and it does not matter what model of this kind of equipment, since the nature of breakdowns is almost the same for everyone. Well, here’s the chainsaw stalled and what’s next? Undoubtedly, you can attribute the equipment to specialized services that will repair your “iron friend” for a fee. But as they say: why pay more?

After all, you can personally disassemble the tool and repair it, since the breakdown can be insignificant, and in the service you will pay a lot. But naturally, in order to bring the instrument back to life, you need to be able to understand the causes of its breakdown and troubleshooting methods. So let’s learn! In this article you can find answers to questions regarding situations when the tool simply stalls after directly pressing the gas. So let’s get started.

The main elements of chainsaws

Before you begin to delve into issues of breakdowns and repair of the tool, let’s first figure out what the chainsaw itself consists of. First of all, I would like to note that this tool belongs to the category of technology, the operation of which directly depends on the internal combustion engine.

Single cylinder engine

It is also important that chainsaws are equipped with a single cylinder engine, and whose work is carried out on such kind of fuel as gasoline. It is worth noting that, despite the similarity with other tools, it does not have a gearbox. And it is replaced by a kind of single-stage chain transmission, through which the chain itself (saw) is moved.

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In fact, a chainsaw is a fairly simple design, but this does not prevent it from being reliable, practical and able to fully provide direct uninterrupted and cyclic operation even in fairly difficult conditions. This tool consists of a huge range of certain “vital” elements for its correct and productive work. This is a carburetor, a direct chain tensioner, a tire equipped with a chain and other elements.

Before buying a chainsaw, be sure to study all the options, and choose the brand of chainsaw that suits you.

To simplify your choice, we have compiled a chainsaw rating for you in terms of reliability.

If you have a limited budget, then read the article about Russian manufacturers of chainsaws.

Why does the chainsaw stall and stutter when you press the gas

Chainsaws are quite reliable and uncomplicated designs. Therefore, if you properly care for them and handle them based on the recommendations of the manufacturer, then they fail well, very rarely, various kinds of breakdowns are quickly eliminated. But if you are faced with this situation and want to repair your tool yourself without resorting to the help of professionals, then delve into the information below.

As a matter of fact, it is impossible to determine unambiguously and precisely the reason why the tool does not start or stalls when you press the gas, as there are a lot of factors influencing this. But do not forget that starting from the fact that the chainsaw is equipped with a simple two-stroke engine, conditions such as lubrication, fuel, spark and air are important for its effective performance.

Chainsaw Fuel Tank

Therefore, the carburetor is directly involved in the preparation of the fuel-air mixture, the filter purifies the air from dust, the ignition unit and the spark plug create a spark, and gasoline contains grease.

That is why it is necessary to search for the causes of this type of breakdown in a sequential order, starting directly from simple and gradually moving to complex. And this is an important factor in proper repair, as the person who, without thinking, begins to parse the carburetor, puts her at risk. Since this kind the unit must be repaired or adjusted directly in special workshops (read about carb adjustment).

Wrong fuel

Important is the fact that for the trouble-free operation of the tool, it is necessary to be careful enough directly to the fuel. Since if this kind of mixture is not prepared correctly, then most chainsaws simply will not start. Therefore, not every owner will guess the reason for the breakdown in the fuel. That is why in order for your tool to always work correctly, you need to use exclusively high-quality gasoline for the mixture.

And also use only the oil that is made by the manufacturer of your tool. In addition, it is important to prepare this kind of mixture in the amount that you accurately use in one or two weeks, but not more (see the proportion of gasoline and chainsaw oil).

Since in another case, overexposure of the mixture directly in the canister will lead to the fact that it will lose all its octane properties and this will lead to significant problems with the tool.

Blend when the mechanism is running

The cause of the breakdown can be immediate pouring a candle mixture at a time when the mechanism is running. In order to solve this problem, it is necessary to turn out and dry the candle, but remember that you can not calcine it in any case. Excess fuel must be drained through the hole (candle), wait 20-30 minutes, then install it in place and try to start the tool again.

There is no spark and the chainsaw is not gaining momentum

The chainsaw stalls when you press the gas due to the fact that no spark. This can happen when there is no good contact between the tip of the plug and the wire (high voltage). However, if this kind of connection works correctly, but there is still no spark, the whole cause is the ignition unit (electronic). It is important to note that this kind of spare parts cannot be repaired, so they can only be replaced.

Do not forget that by inspecting the candles you can get significant information regarding the breakdown of the chainsaw. Since if its surface is dry, the reason for this is the cylinder, which does not directly supply fuel. That is why you will have to step by step check the entire spectrum of its submission. If the candle is all in black soot, this means that the carburetor is not working properly, that is, it either supplies a lot of fuel or pours oil directly into gasoline.

Not enough fuel to feed and operate the chainsaw at full power

If the chainsaw stalls when gas is added, it means that the fuel is not supplied enough for the full operation of the chainsaw. This may be due to clogging of the carburetor (its nozzle), or contamination of the filter itself (fuel). Remember that the first node should be checked exclusively by professionals, but you can clean the second one yourself.

The filter is dirty

Since, for example, the Stihl chainsaw stalls when you press the gas for a simple reason, namely a simple clogging of the direct breather.

In order to solve this kind of problem, all you have to do is disconnect the hose (fuel) from the carburetor and pay attention to whether fuel is leaking from it. Since if the mixture flows in a full stream, this means that the breather is not dirty, but if it is the other way around, then the cause of the breakdown was found.

Muffler, as the reason that the saw stalls when loaded

Here’s another reason why the chainsaw stalls when you press the gas. muffler. It is this detail that can interfere with the full-fledged operation of the tool in those cases when it is directly contaminated with exhaust resinous deposits. To do this, you just need to clean it.

Cylinder piston group

Quite often, the Partner chainsaw stalls when pressed and the reason for this is cylinder piston group. Since by inspecting them, namely the piston and cylinder, it is easy to determine the cause of a tool malfunction directly by replacing them. You can also make a direct bore of the cylinder itself relative to the size of the new piston.

But if after inspection you find that there is no damage to either the piston or the cylinder, in this case the cause may lie directly in the rings (piston). For this kind of check, it is necessary to insert a piston into the cylinder and gently begin to swing it by means of a connecting rod. If suddenly you feel a backlash then the rings need to be replaced, as they have already worn out.

Insufficient chain lubrication prevents start and saw does not develop speed

Many people ask the question: why does the chainsaw stall when I press the gas? The answer may also lie in insufficient chain lubrication (see oil for the chainsaw chain), as the oil pipe may leak or the direct channels may be clogged. That is why pay attention to the chain, because if it is dry, without delay, start cleaning the channels that supply oil directly to the tool bar. After that, examine in detail the parts where the oil pump fittings are connected to the pipes. But if you notice that the oil is leaking at the joints, or if there are cracks on the pipes themselves, then in the first case, seal the leakage points with sealant, and the pipes will have to be replaced.

Additional tips

First of all, what you should remember when acquiring this kind of tool is that certain parts of the saw must be replaced with new ones after their useful life has expired (passport). It is for this reason that the instruction should always be at your fingertips, since everything is described in detail there.

These details include: asterisk (leading), bus, part of the system (anti-vibration), as well as a chain. Since we should not forget that if this “stuffing” is not replaced with a new one at the right time, then these worn-out spare parts will negatively affect the rest of the chainsaw. For this reason, often enough do a check of the depth of the direct tooth extraction. Remember that it should not be higher than a week of 0.5 mm.

To summarize.

Definitely, every thing we buy has its own expiration date and sooner or later it breaks down and how insulting it is when the degree of breakdown is so great that it cannot be repaired. But you must admit that quite often we simply neglect the technique (see about proper operation and how to cut down a tree correctly so that it falls in the right direction), and when it stops working, then we try to find ways to fix the breakdowns, turning to a huge number of services.

But remember that even though the equipment breaks, we can extend its “life”. All that is needed is to simply look after her, run in after replacing the parts (see how chains are run in read here) and keep her spare parts clean and tidy. And then, undoubtedly, it will serve for many more years. It is also important to use exclusively high-quality spare parts and “additives” (see nozzles for chainsaws). Then your equipment will run smoothly, and you simply forget what repair is.

We also recommend that you familiarize yourself with the Stihl ms 180 chainsaw.

The chainsaw starts and stalls. Why?

There are several simple rules for the operation and maintenance of chainsaws, compliance with which will maximize its service life. Preparing the correct fuel mixture, regular cleaning of filters and periodic replacement of parts will save you from the need to repair your tool for a long time. If it was not possible to avoid a breakdown, then you can figure out its cause completely independently. This applies to all brands of chainsaws, starting from the more complex models “Husqvarna” and “Stihl” and ending with the simplest models “Makita” and “Patriot”.

Chainsaw stalls immediately

What to do if immediately after starting the chainsaw stalls? First you need to check the fuel in the gas tank. If its level is not enough, then you need to prepare the fuel mixture in strict accordance with the ratio of gasoline and oil prescribed in the operating instructions. Gasoline should have the highest possible octane rating, and the required brand of oil, as a rule, is indicated in the data sheet of the chainsaw.

Next, check the spark plug, as well as the contact of its tip with a high-voltage wire. The gap between them should be no more than 0.5 mm. If necessary, the candle is cleaned of carbon and dried. It is recommended to occasionally replace the candle with a completely new one. The reasons why the tool stalls when you press the gas are hidden in the fuel filter or carburetor jet. Cleaning the gas filter will not take much time and effort, but it is better to entrust the dismantling and cleaning of the carburetor to the specialists of the service center.

Chainsaw stalls idling

Cases when the chainsaw stalls at idle are common. First of all, it is necessary to check the muffler, and, if it is contaminated, to clean from tar tar deposits. Also, on carburetors of some models and others, there are bolts with the inscriptions H and L. respectively, a rough and precise setting. By adjusting the bolt L during operation of the chainsaw so that its revolutions increase (turning the bolt just enough half a turn), it is possible to eliminate this problem. Adjusting the carburetor requires the availability of an electronic tachometer and is a rather time-consuming process. That is why in such cases it is better to turn to professionals.

Chainsaw stalls when loaded

If the chainsaw stalls under load, the cause may be the fuel system or a dirty air filter. Replacing fuel in the correct gas / oil ratio or cleaning the air filter are universal solutions to this problem. An improperly prepared mixture of low-quality gasoline and, for example, engine oil is the main reason for the malfunction of the chainsaw, including in the case when it heats up and stalls.

Chainsaw stalls when tilted

When the chainsaw is horizontal, the fuel pipe lies at the bottom of the gas tank, when the tool is tilted, the pipe is above the fuel mixture, i.e. in midair. This is precisely the reason why the chainsaw stalls on its side.

Chainsaw stalls at high speeds

In the event that the tool stalls at high speeds, it is necessary to check three parts: an air filter, a fuel pump and a gasoline filter. The air filter must be cleaned, you can even wash it under water and dry it thoroughly. Then it is enough to disconnect the fuel hose from the carburetor and see if fuel flows out of it or not. If it flows fully, the gas filter may not be checked. If on the contrary, then the malfunction is found. The breather can be cleaned with a regular needle, and the filter can be carefully disconnected from the suction hose, cleaned or replaced with a new one. The gas pump is checked for wear: if fuel does not leak through it, then everything is fine with it. If the problem that your tool stalls at full speed is caused by some damage to the pump, then this part must simply be replaced with a new one.

Do not start, the chainsaw stalls. causes and solutions

Each owner of a chainsaw throughout the life of the tool regularly encounters problems. As a result of various malfunctions, the chainsaw refuses to start, or works with noticeable failures. Specialists will help to fix any of the malfunctions. However, to save your time and money, you can try to repair the tool yourself. For this, you do not need to have expensive equipment. It is enough to have tools that can be found in any garage.

How to start a chainsaw?

Before you start the tool, you need to read the manual for its operation. The instructions for some models indicate that before starting the saw, an inertial brake must be applied to instantly stop the chain. Thus, starting the tool will be safer for the operator. However, with the brake on, it will be much more difficult to make a saw. In practice, it is best to start the saw with the brake off, while adhering to safety regulations.

To properly start a cold chainsaw, you need to adhere to the following procedure:

  1. First of all, you need to move the throttle adjustment lever to the lowest position. It should be noted that the lever can be moved to this position only when the gas lever is pressed. During this, the carburetor throttle will close. To perform further actions, the gas lever must be locked in the pressed position;
  2. Then you will need to sharply pull the standard starter cable several times. This must be done until the saw motor starts up, and then stalls. Next, the flap position lever must be moved one position up;
  3. After that, you need to again sharply pull on the starter cable;
  4. Then you need to quickly press the throttle lever and release it. In this case, the damper adjustment lever will automatically move to its working position. The engine speed will fall, which will indicate the readiness of the chainsaw for further work.

To make the tool hot, you will need to move the throttle control lever to the middle position and rarely pull on the starter cable.

Why not start a chainsaw. causes and solutions

Each model has its own weaknesses. Some saws require regular carb adjustment. The disadvantage of others is the chain lubrication system. Be that as it may, any breakdown can be eliminated with your own hands, if you understand what its cause is, and what are its signs.

What should I do if the chainsaw stalls when I press the gas?

As a rule, owners of chainsaws begin to encounter this breakdown after the first 6 months of intensive use of the tool. There may be several reasons for this malfunction.

Their list includes:

  • use of fuel mixture prepared in the wrong proportion. If you regularly pour low-quality gasoline into the chainsaw tank, in which too much or too little oil is placed, the tool will not start. In this case, it will be necessary to drain the fuel and also dry the engine cylinder. To do this, you need to sharply pull the starter cable a few times. After this, you need to fill in the correctly prepared fuel, and start the saw engine;
  • filling the spark plug with oil at the time of starting the engine. This problem can be solved by removing, cleaning and drying the candles. After 30 minutes, the candle will dry and it can be screwed in. After that, you will need to start a chainsaw;
  • lack of spark. This indicates a bad contact between the factory high-voltage wire and the tip of the plug. If the contact is not broken, but there is still no spark, then you need to check the electronic unit of the chainsaw ignition system. This item is not repairable, so it will need to be completely replaced;
  • clogged air filter. This element of the saw must be regularly cleaned of debris, small insects and dust. Otherwise, air will not enter the carburetor, where it should enrich the fuel mixture. As a result, the saw will stop starting up. To solve the problem, you need to clean the filter, or replace it.

In most cases, the chainsaw ceases to start due to the use of low-quality fuel and engine oil. No need to save on working fluids, as this will lead to complex and lengthy repairs.

The chainsaw starts up normally, but stalls when gas is added

One of the common breakdowns of household chainsaws is to work only at idle, and instantaneous failure when you press the standard gas trigger.

There can always be several reasons for this malfunction:

  • clogging or initially incorrect adjustment of a standard carburetor. in this case, you will need to clean the unit and adjust it according to the instructions in the instruction manual;
  • clogging of the base air filter of the tool used. because of this, air does not enter the saw carburetor, which leads to a gradual loss of power;
  • clogging or wear of the fuel filter. as a result, the part is not able to pass the amount of fuel that is necessary for the engine to gain speed.

If the chainsaw is idling but stalls under load, the first thing the owner should do is check the condition of the filters. Only after this can you start setting up the carburetor.

Chainsaw starts and stalls. repair malfunction

This problem often results from a carburetor breakdown. Its cause is often the malfunction of the main fuel jet or pump, which is responsible for pumping fuel.

It is also a common cause of chainsaw failure. this is air leaks in the crankcase. If it is insignificant, then the operation of the engine will not change much, only its power will drop slightly and the speed will increase, which will lead to its accelerated heating. With a gradual increase in suction, the chainsaw motor will stop idling and will quickly overheat when working under load. Too much air suction will cause the saw motor to quickly stop working immediately after starting it.

To eliminate the breakdown, the nozzle and the fuel pump of the chainsaw must be completely replaced. You will also need to clean the tool cylinder from deposits and oil residues.

What to do if the chainsaw warms up and stalls?

The situation in which the saw is gaining momentum and stalls is well known to many owners of semi-professional tools.

The main causes of failure can be as follows:

  • incorrect carburetor adjustment. This will be indicated by the filling of a candle with a hot engine. To accurately determine the breakdown, you need to start a saw with a cold engine. If for this the operator does not have to close the throttle, and to start it, a preliminary flash is not necessary, then the fuel is not formed correctly. To solve the problem, you will need to configure the base carb of the instrument;
  • spark plug breakdown. A sign of this malfunction will be the absence of sparks when the engine is hot. It is best to immediately replace the candle with a new part. If this does not work, then you will need to check the standard ignition coil, as well as the gap between the factory flywheel and magneto.

If the chainsaw stalls when heated, then most often the cause of this is the malfunction of the magneto. In almost all chainsaw models, this element is not repairable, which is why it is better to replace it immediately.

Chainsaw stalls under load. causes and solutions

A common reason that the saw stalls when you give gas is the incorrect setting of the factory carburetor. Another symptom of a malfunction is an increased air leak through the holes in the carburetor gaskets and oil seals located next to the crankshaft.

To eliminate this malfunction, it is best to take the chainsaw to a service center, as special devices will be required for diagnosis. If this is not possible, then you can try to fix the problem yourself. To do this, you need to disassemble the carburetor and check its tightness. You also need to inspect all seals and gaskets. If necessary, all worn seals will need to be replaced.

If the cause of the malfunction is not in the poor condition of the seals, then you can start adjusting the standard carburetor of the saw.

There is a spark, the candle is wet. how to solve the problem?

A wet candle indicates an imbalance in the preparation of the fuel mixture. In this state, the part is at first still able to form a spark, but gradually this property of the candle is lost. In addition to the wrong ratio of oil and fuel, there are a number of reasons why the element fills.

These include:

  • strong blockages of the air filter;
  • failures in the carb settings;
  • malfunctions in the work of the standard ignition system;
  • incorrect sequence of actions when starting a cold motor;
  • poor quality gasoline.

In the first case, chainsaw repair is carried out by thoroughly cleaning or completely replacing the instrument air filter.

If during operation the tool began to consume a large amount of fuel, and the engine speed began to “float” constantly, decreasing and increasing every 5-10 seconds, then the owner of the chainsaw should adjust the carburetor.

Repairing a standard ignition system is a bit more complicated. To do this, check all electrical wiring and measure the clearance between the high voltage wire and the tip of the plug. If necessary, the ignition system must also be cleaned of blockages.

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If none of these malfunctions could be detected, then you need to study the instructions. Perhaps the operator starts the tool in the wrong sequence.

If none of the above helps, then the cause of the breakdown is poor fuel. In this case, you need to drain the remaining gasoline and fill in new fuel with a higher octane rating.

Husqvarna will not start. Reasons why the chainsaw starts and stalls

This is due to the fact that the production resource of 2-stroke engines, which are most often equipped with such units, also has its own specific limit, the duration of which depends not only on the wear of parts and design, but also on the features of operation, the quality of the fuel and oil poured, compliance with all requirements for storage and operation of the parting, which users themselves often violate.

One of the most unpleasant situations, which can be observed quite often, is when the saw either does not start at all, or starts and stalls immediately, jeopardizing many production tasks. Let’s see how specific faults can be recognized and what needs to be done to make the unit function again.

The chainsaw does not start. the main reasons

Being a rather complex and multicomponent device, chainsaws can fail for a number of reasons that arise in its individual working bodies.

All their diversity can be reduced to the following:

  • problems with filtration systems of the device, in particular, with air and fuel;
  • reduced compression
  • damage to the carburetor or its unregulated;
  • possible problems with spark plugs;
  • when the source of the problem lies in the ignition coil or the gap between it and the flywheel.

Why does the chainsaw stall right after launch?

The situation when the chainsaw stalls when you press the gas is quite common, which is a reliable signal that there are quite serious malfunctions.

This can serve:

  • inconsistency of the combustible mixture with the necessary requirements;
  • clogging of the filter components of the chainsaw;
  • reduced compression;
  • the carb is incorrectly adjusted;
  • incorrect operation of the ignition system.

The most commonplace of all the above is the first situation when it is not possible to start the gasoline unit, since its fuel tank is empty or not enough fuel to start. Another point is the wrong proportions of the combustible mixture, low-quality gasoline with a low octane rating or oil that is inappropriate for the chainsaw model. If everything is clear and verified here, it is worth starting to work out other causal relationships.

If the gasoline filter is dirty, the fuel supply can be not only complicated, but completely stopped, which violates the normal start of the saw or even does not allow it to be done.

In this connection, the petrol knife does not start or stalls at idle?

The situation when the petrol tool starts and stalls can be observed in the following cases:

  • when the muffler is clogged;
  • there are problems with the cylinder-piston part of the unit;
  • carburetor requires reconfiguration.

The bolt L is responsible for idle speed in the carburetor, which you can try to turn a little, which in most cases works instantly. Likewise, a violation of proportions during the manufacture of a combustible mixture can often lead to such consequences, which usually entails many related problems.

Why does the gas cutter stall when you give gas?

The reasons for this may be even more than in previous cases. Consider the main ones.

  1. Low quality fuel or oil, as well as incorrect calculation of the volumetric parts of the mixture, which requires a user manual;
  2. Unexpected fuel fill of spark plugs after starting at idle. To resume work, excess fuel is drained, the candle is removed from the device and dried. Only then can the unit start again;
  3. Also, the chainsaw starts up normally, but dies due to the fact that the spark can disappear when gas is added. Usually this happens when there is weak coupling between the wire and the candle tip or there are significant defects in the incendiary elements.
  4. There is not enough fuel for the normal functioning of the chainsaw or its insufficient intake (dust particles clogging the air filter or breather).
  5. The muffler is “overgrown” with pollutants and requires urgent cleaning.
  6. Problems in the piston cylinder system.
  7. The problem with the lubrication system. It may simply be missed or the oil filter and conductive tubes may be clogged with debris. They wear out very much, so every time before starting work with a gasoline tool it is necessary to check it for the integrity of the pipes and joints supplying lubricant.

Chainsaws equipped with high-speed engines quite often refuse to work when the load increases. If the chainsaw is operating normally at idle, but stalls under load, this indicates a number of possible malfunctions, such as:

  • fuel filter clogged;
  • gas tank defects or clogging;
  • the quality of the fuel mixture used does not meet the requirements of the unit.

If it’s a filter or a gas tank, we recommend replacing them with new ones to protect yourself from possible problem situations in the future. If even this did not help to improve the situation, and the gas technology continues to shut down suddenly even before the beginning of fruitful work, it is necessary to prepare a new fuel mixture using only high-quality gasoline with a high octane rating. The proportions of oil and gasoline must be strictly maintained so that the motor can generate the required power even at sufficiently large loads.

What if the chainsaw is gaining momentum and stalling?

This situation is very similar to the previous one, only the difference is that there the chainsaw does not show high speeds at all, but here it initially gives them out, but does not hold them. Most often, the chainsaw stalls when heated due to clogging of the filter parts of the saw, as well as malfunctions of the fuel pump.

The air filter is periodically washed and dried before re-installation, and the fuel supply hoses should be constantly checked for leaks and replaced if necessary. Every part has an expiration date, so do not be surprised that the gasoline pump will cease to contain fuel and begin to ooze, which is also worth considering when troubleshooting such a technique.

What could entail if the chainsaw stalls “hot”?

Gasoline equipment can start well when not warmed up, but it also warms up

What to do if the chainsaw stalls when you press the gas

Despite the high performance of chainsaws, sometimes there are times when the tool stops working normally. In particular, a common situation is the fact that the chainsaw begins to stall when you press the gas. For experienced owners of tools, this problem is known, but for beginners who have encountered this for the first time, they will have to turn to specialists for help. But do not rush, in the material you can find all the important causes of the malfunction, as well as try to eliminate them.

Checking the main chainsaw systems

If the chainsaw stalls after pressing the accelerator, it means that there is a breakdown of some element. It is very difficult to determine the cause of such a malfunction right away, as various factors can contribute to this. The search for the cause should begin with verification activities of the main systems of the instrument, starting from the smallest to the largest.

The first step is to check for fuel in the tank. Often masters are so keen on sawing that they forget to add fuel to the tank. Even if there is a certain amount of fuel in the tank, and the chainsaw starts up and immediately stalls, then this may be due to the lack of mixture as a result of clogging of the fuel channels.

If everything is in order with the fuel, then the cause must be sought in the spark plug. It should be unscrewed and inspected contacts. If there are no signs of dampness and soot, then you need to check the size of the gap, which should be 0.5 mm, and after the presence of a spark. If the candle has not been replaced for a long time, then you need to change it, and then restart the tool.

It is also necessary to check the muffler, since its clogging can impede the exhaust gas, which affects the functioning of the internal combustion engine. The silencer is subject to dismantling and wet cleaning of soot. If the above steps do not help to fix the problem, then you will need to delve into the situation in more detail, since the cause may be a malfunction of the carburetor or the need to configure it.

Causes and features for troubleshooting

Why the chainsaw stalls after start-up or during operation can be found out only after checking. As a result of the check, you can not only detect the causes of malfunctioning of the motor, but also possible breakdowns. In order to find the exact cause, you need to know in what cases a malfunction is observed. Consider such cases, and also find out the features of troubleshooting.

Stalls when you press the gas

If the engine stalls when gas is added, the following factors may be the reason for this:

  • clogged or incorrect carburetor setting;
  • air filter contamination, whereby the motor does not have enough air to gain speed;
  • clogging of the fuel filter, which contributes to the intake of an insufficient amount of the fuel mixture;
  • malfunction of the cylinder-piston group. If the amount of oil in the fuel mixture is insufficient, excessive piston friction against the cylinder wall occurs, which entails overheating and scoring.

In case of overheating with a lack of oil in the fuel mixture, it will be necessary to carry out a major overhaul of the engine, which is one of the most unpleasant consequences. In order to properly adjust or clean the carburetor, you should give it to a specialist, since the lack of experience with small parts can lead to damage to the mechanism. Checking the air and fuel filter can be done by yourself.

It’s important to know! The fuel filter must be replaced every 3 months with daily use of the tool.

If the chainsaw does not allow you to develop speed when you press the gas, then it is advisable to try to replace the fuel mixture in the tank, especially if it has been in the tool for a long time.

Stalls on load

If the chainsaw begins to stall under load, the reason for this is, first of all, the incorrect carburetor setting. If this reason is eliminated, then in addition to problems with the carburetor, the cause of tool inoperability under load can be damage and wear of the crankshaft oil seals or carburetor gaskets through which air is sucked into the system.

It’s important to know! Diagnosis of such a malfunction is best done at a service center, where the exact cause will be established.

It is recommended to start troubleshooting by checking the gaskets and gaskets, and only after that check the carburetor settings. Another reason why the chainsaw starts and immediately stalls under load can be grinding of special hoses, through which the impulse is transmitted from the crankcase to the fuel pump. But such hoses are not installed on all models of chainsaws, but only mainly on professional ones. To eliminate the malfunction, it is recommended to replace this hose. How to do it right is discussed in the video:

Stalls idling

If the chainsaw starts up poorly and stalls at idle, the first cause is a clogged muffler. The muffler should be removed and then wet cleaned. This is very important, since with dry cleaning dust can enter the lungs, which will lead to serious respiratory failure.

The second reason that the chainsaw stalls at idle is the incorrect carb setting. For the chainsaw to idle, tighten the screw called L on the carburetor. If the tool stalls at idle, the screw should be turned 0.5 turns clockwise. To precisely adjust the carburetor, it is recommended to use a tachometer, and the tuning technology is described in this article (link).

Stalls when tilted

The reason that the chainsaw starts to stall when tilted is the lack of fuel in the system. The fuel pipe is located directly at the bottom of the gas tank, so tilting the tool causes the pipe to simply begin to be located above the fuel mixture. Actually, therefore, when the tool is working, it can stall sharply.

Stalls at high speeds

When the chainsaw begins to stall at high speeds, the following details are subject to inspection:

  • air filter;
  • fuel pump;
  • fuel filter.

The air filter must be cleaned, for which it is enough to wash and dry it (paper-only change). You can check the clogging of the fuel filter by disconnecting the fuel hose from the carburetor. If the trickle of gasoline from the hose flows well, then the fuel filter can not be checked or replaced. If the trickle is weak or there are no signs of fuel supply then replace the filter and clean the breather with a regular needle.

Checking the gas pump is checked for the characteristic signs of fuel leaking through it. If there are no signs of leakage, then everything is in order, so it remains to check the carburetor. Depending on the power of the saw, maximum revolutions are set, which can be checked using an electronic tachometer.

As can be seen from the description, there are a lot of reasons why the chainsaw starts and stalls. Most often, this occurs due to improper carburetor settings, although on branded chainsaws, such as Stihl, Husquarna, carburetor adjustment is a rare event when filling with a high-quality fuel mixture. If malfunctions and malfunctions occur in the operation of the tool, it is recommended to carry out its diagnostics and repair, and only after the elimination of the malfunction continue to use. Not infrequently, minor symptoms of malfunctions become serious problems for tool owners.

Husqvarna chainsaw stalls under load AURAMM.RU

What to do if a chainsaw dies

Hello, honored subscribers and readers of my blog! In touch Andrey Noak. the chainsaw stalls under load. We continue the topic of chainsaws. So, I already said earlier that it should be inspected in a chainsaw in order to know the cause of its malfunction. Now I’ll move on to more valuable instructions so that you do not find the cause of the problem for a long time and approximately know how to solve it. A chainsaw is not the most difficult tool, but it must be properly looked after. Why does the chainsaw stall when in some cases the chainsaw is under load Husqvarna 353. There are various cases, from time to time the chainsaw stalls when you press the gas, from time to time in the load, and from time to time it does not work at idle. The chainsaw stalls when you press the gas. youtube. Let’s take a look at various situations together and try to find the right solution.

If you find that the tool does not start and stalls at all, then do not rush to the service center right away, you can try to solve the problem yourself.

Checking the main chainsaw system

We check each system one by one:

  1. Fuel tank. Maybe there is not enough fuel there or it is bad.
  2. Subsequent testing gets the spark plug and high voltage wire. Pay attention, the clearance of the candle normally does not exceed half mm.
  3. If the above items are tested and working correctly, we run to the carburetor and fuel filter. Chainsaw stalls when you press the gas: causes and. If the carburetor breaks down, contact a specialist.

Stalls at idle

From time to time, the saw stalls at idle, and a muffler clog is a common cause of failure. It can simply be cleaned without the help of others, for this you do not need the highest special.

In addition to cleaning, there is still one option, but we treat it very carefully so as not to harm the internal parts of the device.

To adjust the carburetor, you need to find two bolts with the signs L and H. The latter must be turned, a little bit, only half a turn. He is responsible for the revolutions of the tool and, if necessary, will raise the idle speed.

Read also

Why does the chainsaw stall when I press on the gas: prerequisites and solution There are often cases when owners of chainsaws encounter their breakdown and it’s completely unprincipled which model of this kind of technology is, because the nature of breakdowns is practically the same for everyone.

What to do if a chainsaw stalls at idle A chainsaw stalls at idle: many owners of this tool face this problem. By its own device, it saw a fairly light tool. But there are times when.

Do-it-yourself chainsaw repair All chainsaw malfunctions can be divided into two main groups: engine problems with all its components and systems (ignition, fuel supply system, cylinder-piston group, exhaust system) and others malfunctions.

The correct proportion of oil and gasoline for a chainsaw The proportion of oil and gasoline for a chainsaw is very important for the durability and reliability of the device. The required proportions directly depend on the type of saw and the mode of its operation. You need to find the type of chainsaw.

What to do if a chainsaw stalls? Well, esteemed subscribers and readers of my blog! In touch Andrey Noak. We continue the topic of chainsaws. So, I already said earlier that it should be inspected in a chainsaw in order to know the cause of its malfunction. Now.

Do-it-yourself chainsaw repair All chainsaw malfunctions can be divided into two main groups: engine problems with all its components and systems (ignition, fuel supply system, cylinder-piston group, exhaust system) and others malfunctions.

Chainsaw stalls in load

stalls in load Free consultation is better by skype ork.vitek or by phone. 380979677418 than I can, the more.

Chainsaw stalls when pressing on gas. The chainsaw stalls when you press the gas.

The video addresses a fairly common malfunction chainsaws and 100% carb option method. The chainsaw stalls under load. discussion. The chainsaw stalls "at Husqvarna 135 stalls at high speeds. Why does it stall. How is this done.

Turns off when loaded

Massive chainsaws often stall from the load. This is especially noticeable when the chainsaw stalls under load. Husqvarna 135 stalls. Most likely you have a clogged fuel filter, and it needs to be replaced. If this does not help, then you need to check the quality of the fuel mixture and prepare the latest.

The saw stops working when increasing speed

Localization of problem areas:

Filters are often clogged, especially when the chainsaw is actually operated once a day. The air filter can be disconnected and washed under a stream of warm water. Before inserting into place. painstakingly dry.

If, after disconnecting the fuel hose from the carburetor, no fluid flows out of it, it means it is clogged. It can be cleaned or exchanged for a new one.

If the instrument is used frequently, a gasoline pump may fail. saw stalls when you press the chainsaw stalls at lateral inclinations. After all, any part has its own expiration date. Why does the chainsaw stall under load. It should be changed or contact a service center.

The saw turns off when turning

In a horizontal position, the fuel tube is on the bottom of the tank, but if the tool is tilted, the fuel will not be able to cover it one hundred percent. Specifically, this is a prerequisite that the chainsaw stops working when tilted, because the tube levitates in the air and the required amount of consistency does not reach it.

Hot issues

If you saw that a chainsaw without problems starts up without heating, and stalls after heating. And do not start it until it cools down, then here, maybe a few troubles.

Read also

Why does the chainsaw stall when I press on the gas: prerequisites and solution There are often cases when owners of chainsaws encounter their breakdown and it’s completely unprincipled which model of this kind of technology is, because the nature of breakdowns is practically the same for everyone.

What to do if a chainsaw stalls at idle A chainsaw stalls at idle: many owners of this tool face this problem. By its own device, it saw a fairly light tool. But there are times when.

Do-it-yourself chainsaw repair All chainsaw malfunctions can be divided into two main groups: engine problems with all its components and systems (ignition, fuel supply system, cylinder-piston group, exhaust system) and others malfunctions.

The correct proportion of oil and gasoline for a chainsaw The proportion of oil and gasoline for a chainsaw is very important for the durability and reliability of the device. The required proportions directly depend on the type of saw and the mode of its operation. You need to find the type of chainsaw.

What to do if a chainsaw stalls? Well, esteemed subscribers and readers of my blog! In touch Andrey Noak. We continue the topic of chainsaws. So, I already said earlier that it should be inspected in a chainsaw in order to know the cause of its malfunction. Now.

Do-it-yourself chainsaw repair All chainsaw malfunctions can be divided into two main groups: engine problems with all its components and systems (ignition, fuel supply system, cylinder-piston group, exhaust system) and others malfunctions.

Firstly, maybe in some places there is a suction hose, stuffing box or gaskets. Secondly, inspect the muffler for carbon deposits. The third reason is the cylinder-piston group (CPG), whether there are scoring or bumps there.

From time to time, carburetor adjustments are required. Why does the chainsaw stall when the chainsaw is idling? Another important cause of the malfunction is the ignition coil. In cases where it fails, the spark is lost or becomes very weak, which is not enough to ignite the fuel mixture.

There are cases when the master is trying hard the engine, then cold, then hot, thereby pumping fuel. Here you need to pull yourself together, transfer the flap to a “hot start” and gradually turn on the tool. If the chainsaw stalls when your chainsaw stalls when pressed on when adding gas. At the same time, we reduce the speed to an almost idle level and for 40-45 seconds it warms up.

The saw stalls after releasing the "gas"

Here you need to adjust the carburetor and check if there is a powerful air leak.

The most common cases of chainsaw breakdowns we have already seen. the chainsaw stalls when (when heated, stalls under load or starts on its own. It only remains to eat up that your saw will last without breakdowns. But even such durable models as Stihl and Partner can sometimes fail.

Do not rush to immediately run to the service center, first use my tips, so you can avoid big cash costs.

If the article seemed interesting. share tips with your friends through social networks. And I say goodbye to you. Good luck and see you in the blog!