Chainsaw stalls under load cause

Silencer as the cause of the saw stalling under load

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

There is no spark and the chainsaw does not pick up speed

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

Do not forget that by examining the spark plug, you can get significant information regarding the breakdown of the chainsaw. Since if its surface is dry, then the reason for this is the cylinder, which is not directly supplied with fuel. That is why you will have to check the entire range of its presentation step by step. If the candle is all in black carbon, then this means that the carburetor is not working correctly, that is, it either supplies a lot of fuel, or pours oil directly into gasoline.

Why does the chainsaw immediately stall and jam when the gas is pressed

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

In fact, it is unambiguously and precisely impossible to determine the reason why the tool does not start or stalls when you press the gas, since there are a lot of factors affecting 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.

Consequently, the carburetor is directly involved in the preparation of the fuel-air mixture, the filter cleans the air from dust, the ignition unit and the spark plug create a spark, and there is lubricant in the gasoline.

That is why it is necessary to search for the causes of this kind of breakdown in a sequential order, starting directly from the simple ones and gradually moving on to the complex ones. And this is an important factor in the correct repair, since the person who, without thinking, begins to disassemble the carburetor, brings it to risk. Since this kind of unit must be repaired or adjusted directly in special workshops (read about adjusting the carburetor).

The chainsaw starts and stalls: reason, video

The reason that the chainsaw can stall right after the factory lies in the malfunction of a certain part of the equipment.

  • The most commonplace reason why the chainsaw started and stalled may be the low fuel level in the tank. This can be confirmed by stopping the operation of the tool when tilting, when the remaining fuel accumulates in a certain place in the fuel tank. With low-quality fuel, there may also be a problem with the operation of the chainsaw, in which case you need to completely replace it.
  • Breather blockage, which significantly reduces fuel consumption to the engine.
  • Insufficient contact of the wire cap with the plug, which leads to strong heating of the plug insulator. Contact deterioration can occur due to mechanical shear or carbon deposits.
  • Broken spark plugs.
  • Clogged muffler, which impairs exhaust gas output, causing the engine to stop running. For this reason, the chainsaw can start and stall at idle speed. Sediment in the muffler can also appear due to poor-quality fuel or improper use of the tool.
  • Poor carburetor adjustment.
  • Breakage of the piston group
  • Fuel filter or pump problems. In this case, gasoline may flow through the pump or poorly flow through the fuel filter to the carburetor. As a result, the chainsaw starts up and stalls when the speed increases.
  • Dirty air filter. Problems with this piece of equipment lead to the fact that, with increased loads on the engine, it simply cannot cope with them due to blockage and stops. A similar result is also obtained with an increase in revolutions.
  • Short circuit due to lack of or insufficient lubrication, or a problem with the chain brake.

Additional Tips

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

Parts of this kind include: an asterisk (leading), a bus, a part of a system (anti-vibration), and a chain. Since you should not forget that if this “filling” is not changed to a new one at the right time, then these worn-out parts will negatively affect the rest of the chainsaw. It is for this reason that you frequently check the depth of the direct toothing. Remember that it should not be higher than a week 0.5 mm.

Why the chainsaw does not start well and stalls

In case of poor start-up of the equipment “to cold”, the problem may be in the absence of compression, i.e. rings are worn out due to a long service life, they need to be replaced. Sometimes the reason that the engine does not start well 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 accelerator pump of the carburetor, which causes additional air flow, leading to an increase in saw speed.

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

If the chainsaw stalls when gas is added, it means that the fuel is not supplied in sufficient quantities for the full operation of the chainsaw. This may be due to both clogging of the carburetor (its jet) and contamination of the filter itself (fuel). Remember that only professionals should check the first node, but you can clean the second one yourself.

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

If the chainsaw starts and stalls, the cause can be eliminated on your own. If it is a shortage or improperly prepared fuel mixture, it must be corrected. For prophylaxis during the idle time of the chainsaw, you should always drain the remaining fuel.

Spark plugs should be checked periodically. In this case, remove carbon deposits that clog the joint gap, and also check the tips for the presence of fuel. Another cause of spark plug problems can be when they get wet with gasoline. To do this, they need to be removed, wiped off with a rag and left to dry. Defective spark plugs 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.

A clogged muffler is a common cause of breakdown, in which a chainsaw starts up and stalls immediately. To eliminate the malfunction, you need to dismantle the muffler, clean it from carbon deposits with sandpaper or a special chemical solution. If the model of the chainsaw is non-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 at idle speed. Fine tuning is a rather laborious process, so it is usually done in service centers. But, on some models there are elements for adjusting it, it is enough to turn the bolt half a turn to increase the speed of the chainsaw, the problems will be eliminated. If the jets, nozzles, channels and filters are clogged, the entire carburetor must be disassembled and cleaned. When the oil seals, gaskets, cuffs are worn out, it is necessary to replace them, preventing the “suction” of air.

If there is a problem with the fuel or air filter, it is necessary to replace the fuel pump or clean the air filter.

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

When the chainsaw starts up and immediately stalls, the reason may lie in the malfunctioning of the chain. To troubleshoot problems, check the presence of oil in the chain lubrication container, as well as the oil return pipe for breaks or blockages.

When inspecting the piston group, you should pay attention to the cylinder, if necessary, replace it or the piston. The cylinder can be bored to fit 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.

Among other things, you should control the service life of the parts specified in the product passport, which include the drive sprocket, tire, chain, part of the anti-vibration system, and replace them in time.

If the tool is idle for a long 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.

At idle, the chainsaw works normally, but stalls under load. What could be the reason?

There may be several reasons:

The simplest one, saw a thick (large in diameter) log with a chainsaw and, moreover, the wood is dense and wet and the saw chain has not been sharpened for a long time.

The chainsaw engine just doesn’t have enough power.

Perhaps everything is in order with the engine power, but the carburetor is not adjusted, and perhaps its tightness is broken and it “sucks” air through the gasket.

In this case, at idle, the chainsaw will work as well as under a small load, with an increase in the load, it stalls.

There may be a problem in the fuel filter, or the air filter is tightly clogged.

In this case, at idle, it will work unstable, and stall under heavy load.

There may be a problem in the fuel mixture, the proportions of gasoline and oil are not kept.

Or the mixture was made for a long time, for the stable operation of the chainsaw under any load it is better to use a fresh fuel mixture.

The fuel mixture can be stored for a maximum month in a ready (mixed) state, it is even better to use it within 2 weeks, after production.

Perhaps gasoline was used with a lower octane number than the manufacturer advises, for example, it should run on 95 gasoline, 92 was filled.

Or there may be a problem in the spark plug (insufficient engine power due to a faulty chainsaw spark plug), it must at least be cleaned, set a gap,

There are often cases when the owners of chainsaws are faced with their breakdown and it does not matter at all what model of this kind of equipment, since the nature of the breakdowns is almost the same for everyone. Well, the chainsaw stalled, and what next? Undoubtedly, you can refer the equipment to specialized services that will repair your “iron friend” for a fee. But as the saying goes: why pay more?

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

Reasons why a chainsaw stalls under load

This article of the construction site will consider the main reasons why a chainsaw may not start or stall under load.

The most common of all are the following reasons:

Why does a chainsaw stall under load

Chainsaw stalls under load. reasons what to do?

However, before you climb inside the chainsaw, first try a few simple steps. For example, adjust the carburetor of your chainsaw, try changing the fuel mixture to a new one. Perhaps the chainsaw chain is so tightened that the clutch is not able to withstand the load that has arisen, which is why the chainsaw immediately starts to stall under load.

Because of what the power of the chainsaw decreases

Chainsaw Bogging Down: The Solution That Always Works.

The same applies to the air filter, it must be cleaned immediately if this kind of problem occurs. Now at the expense of the spark plug, if it is heavily soiled, it is also cleaned and adjusted if necessary. It is the wrong gap between the electrode of the spark plug on the chainsaw that can lead to the fact that it starts to stall, and in general, it is extremely unstable to work.

How to adjust a chainsaw carburetor

To adjust the carburetor on a chainsaw, you need to have a small thin screwdriver and a few minutes of free time. It should be noted that after adjusting the carburetor, the engine may not behave as it should for some time, under load, for example, on “cold” or “hot”.

To adjust the carburetor of the chainsaw, use two bolts on the side, one of which enriches the fuel mixture with oxygen, and the second regulates its amount into the combustion engine.

First, tighten the two screws all the way, and then unscrew them until the chainsaw engine starts. Only then should each screw be tightened or unscrewed in turn, until the engine of the chainsaw starts to work as steadily as possible and without failures when pressing the throttle stick.

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The engine cannot withstand loads

If the chainsaw stops right in the middle of a particularly thick log, the problem may be caused by a problem with the fuel supply system or problems with the air filter. The engine just doesn’t get enough fuel to handle a heavy load, and it stalls.

The usual solutions to these problems are replacing the fuel in strict accordance with the recommendations in the instructions (we have already talked about this) and cleaning (replacing) the air filter.

Why the chainsaw stalls

There are several reasons why a chainsaw stalls. And, as a rule, almost all of them are solved independently, without going to the service center.

First of all, check the filters: fuel and air. If they are clogged, then, for sure, this is the reason for the improper operation of the tool. over, the dirt is not always visible to the naked eye. Therefore, even if everything seems to be in order, it is better to carry out this procedure.

The second reason is possibly a candle. Remember the last time you changed it? According to the rules for the operation of chainsaws, this should be done once a year.

Styhl MS 170. Fix Chainsaw Bogging down Under Load (Cutting Wood) Easy Fix

If this does not help, then it is worth trying to adjust the carburetor. It is possible that vibrations when working with a chainsaw lost its factory settings.

If the saw stalls after long-term storage, for example, in an unheated garage, then it is worth looking at the fuel line. Usually, this is a rubber tube, which can crack from dampness and temperature extremes and cause the chainsaw to malfunction.

If none of the above helped, then, most likely, the breakdown is more serious, and, unfortunately, you will have to contact the workshop.

Chainsaw stops idling

If cleaning the muffler does not solve the problem, and your saw engine is carbureted, then you can try to tune it. Most engine models have coarse and fine adjusting bolts (H and L respectively). By increasing the engine speed with their help, the problem can be eliminated. Keep in mind that adjusting the carburetor is a delicate process that requires a tachometer.

The chainsaw starts and stalls, the reason

A chainsaw is no longer a luxury, but a necessary tool for anyone who has at least some suburban area. With its help, you can carry out garden work, harvesting firewood, finalizing lumber and much more. There are a lot of models of chainsaws on sale, differing in both power and overall quality of performance. You can verify this here.

chainsaw, stalls, load, cause

However, any technique can be capricious, and chainsaws are no exception. Let’s consider the most common problems.

The tool stalls immediately after starting

One of the possible reasons is lack of fuel. Check the amount of fuel in the gas tank and add if necessary. In this case, you should strictly follow the recommendations of the instructions, especially with regard to the quality of gasoline and oil. In our country, such subtleties are often ignored, refueling the saw with whatever it is necessary, which causes accelerated engine wear and leads to failures.

The saw can also stall due to deterioration of the spark plug contact with the high-voltage wire. This can be caused by mechanical shear or carbon build-up. Sometimes it is recommended to periodically replace the spark plug with a new one, even if the old one did not show any problems in operation.

The chainsaw can operate normally in a straight, horizontal position, but stalls when leaning sideways. As a rule, this is also associated with a lack of fuel: the fuel pipe rises when tilted, and if there is little fuel, then it rises above the fuel level.

Chainsaw stalls when rpm increases

The reasons for this phenomenon are similar to the previous ones: either the problem is in the fuel system, or in the air filter. Try to disconnect the fuel hose from the carburetor. if the gasoline does not flow well (but you know for sure that there is fuel in the tank), then the reason is in the gasoline filter. You can, at the same time, check the fuel pump. fuel should not seep through it. If this happens, then it is advisable to replace the pump.

Substandard carburetor operation

If it turns out empirically that the filters are clean and the ignition system is not to blame for the fact that the chainsaw is not capable of functioning at idle, the owner of the tool is advised to switch his attention to the carburetor.

chainsaw, stalls, load, cause

It is necessary to disassemble and assemble the carburetor without haste, since it has many parts without which it cannot work.

Often the misalignment of this unit, which is responsible for supplying a certain volume of air-fuel mixture to the engine cylinder, leads to unstable operation. It can be adjusted with three special screws located on the carburetor: screws for maximum and minimum speed, as well as a screw that controls idle speed.

Some manufacturers, fearing unwanted interference from incompetent people, supply their products with only one idle screw. But in both cases, carburetor adjustment can be made only by strictly following all the manufacturer’s instructions.

However, even after adjusting the carburetor, in accordance with the factory standards, this unit can junk. Then it is recommended to clean the fuel and air channels, jets, mesh of the filter element. If the membrane is damaged, it must be replaced with a new and high quality one.

When doing maintenance and repair of a carburetor, you should always remember that it is usually crammed with many very small parts, without which the device simply cannot work normally. Therefore, the carburetor should be disassembled and reassembled without haste and with extreme caution.

The main causes of chainsaw breakdown

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

  • the chainsaw is not picking up speed;
  • the chainsaw stops functioning in the cut;
  • the chainsaw starts and stalls;
  • the chainsaw loses its power;
  • the 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 components. Proper handling of this technique is essential. When all the rules of use are followed, problems are likely to lie in the most obvious. When looking for the causes of problems, it is advisable to start by checking the simplest part of the chain saw and finish the most difficult.

What to do if the chainsaw stalls 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 should be done to solve this problem? In such a situation, you need to do the following:

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

Why does a chainsaw stall under load

Sometimes the saw will not function properly under load. This is most often caused by improper adjustment or leaks in the carburetor. In addition, air leaks through the carburetor gasket or crankshaft oil seals may be the cause of this problem. A tool that is unable to function under load also cannot maintain idle speed reliably.

Diagnostics begins with checking the carburetor and crankcase for leaks. If air leaks through the crankshaft oil seals, they must be replaced. If air leakage in the carburetor is detected, the installation of a repair kit of gaskets is required to solve the problem.

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If these actions did not lead to the desired result and the crankcase with the carburetor is tight, then the carburetor needs to be adjusted.

If a Husqvarna chainsaw stalls under load, then in case of any deviations in the functioning of the engine, you should first of all check the impulse hose, since this is the most common cause of breakage of this brand of chainsaws.

Checking the main systems of the chainsaw

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

  • fuel;
  • spark;
  • grease;
  • air.

Then it is necessary to sequentially check the functioning of all its elements. First you need to check the fuel tank. If the cause is not volume and quality of fuel, then spark plugs may be the likely cause of the problem. The gap at the candle should not exceed 0.5 millimeters. If it is too small, it means that carbon deposits have been deposited on the candles. In this case, remove the candles, clean them, then reinstall 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 of the fuel filter is a simple task, but it is best to entrust the repair of the carburetor to specialists.

Why the chainsaw doesn’t pick up speed and stalls

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

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

Another possible reason that the chain saw is not able to pick up speed may be excess carbon deposits in the muffler, which makes it difficult for the exhaust gases to escape, which reduces the power and engine speed.

Why the chainsaw stalls, the main reasons.

The chainsaw starts and stalls. the reason

If the chainsaw starts and stalls at the first attempts to do the job, then the reason may be problems with the chain brake or its jamming due to lack of lubrication. In this case, the oil level is measured. If the amount of lubricant is sufficient, then the cause may be in the tube that leads it to the lubricating mechanism.

Another reason may be a broken carburetor. If he only needs adjustment, it can be done independently in accordance with the instructions. If the carburetor needs cleaning or repair, then you cannot do without the help of professionals.

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

Shoots the carburetor:

  • Ignition too late. the air-fuel mixture does not have time to burn out in the cylinder, so a sound that looks like a small explosion is obtained.
  • Lean air-fuel mixture. Too little gasoline enters the mixture. adjustment of the chainsaw, or rather the jets, is required in order to increase the fuel supply. Why the chainsaw thrusts itself. for the same reason.

Chainsaw Gauge Stalls When Pressing Gas AURAMM.RU

What to do, if chainsaw deaf

Hello dear subscribers and readers of my blog! By phone Andrei Noak. We continue the theme of the chainsaw. So, I already said earlier about what needs to be checked in a chainsaw in order to find out the cause of its malfunction. Today I will switch to more valuable instructions so that you do not look for the cause of the problem for a long time and do not know how to solve it. Chainsaw. not the most complicated tool, but you need to take care of it properly. There are different cases, sometimes chainsaws stop when you press the gas, sometimes load, and sometimes they don’t idle. Let’s look at different situations and try to find the right solution.

If you find that the tool won’t start or stop, you don’t need to rush to the service center right away, you can try to fix the problem yourself.

The chainsaw stalls when you press the gas

pressing the gas. The Partner 370 chainsaw began to stall at the slightest push on the handle.

Driving on the “single”

Sometimes the saw stalls at idle speed, which is a common cause of breakage. muffler obstacle. It can be easily cleaned by yourself, it does not require a high professional.

Apart from cleaning, there is another option, but we are very careful with it so as not to damage the internal parts of the device.

To adjust the carburetor, you need to find two bolts with the letters L and H. The latter needs to be turned a little, only half a turn. He is responsible for the revolutions of the device and, if necessary, raises the idle speed.

Chainsaw “bog” what to look for and how to fix

The chain falls

Why does the chain fly off the tire? There may be several reasons and they are all different:

  • Drive or driven sprocket is worn. Due to the fact that the sprocket is worn out, the adhesion to the chain decreases, which is why the chain flies off the chainsaw. Sprocket replacement required.
  • The chain has stretched out. Why does the chain stretch on a chainsaw. due to insufficient lubrication. The metal heats up and stretches, albeit by a fraction of a millimeter, but if you take into account the number of links, then even 3-4 mm is enough for the chain to fly off the tire. The chain needs to be changed.
  • The chain tensioner, which regulates its tension, is loosened. how to adjust the chainsaw, or rather the chain tension? You need to adjust the tensioner. this can be done in just a few minutes.

Saw cuts off when turning

In a horizontal position, the fuel line is at the bottom of the tank, but if the tool is tilted, the fuel cannot completely cover it. It is for this reason that the chainsaw stops working when it is tilted, since the tube levitates in the air and the required amount of mixture does not flow to it.

Saw stops working at increased speed

Localization of problem areas:

Filters are often clogged, especially on an almost daily basis. The air filter can be detached and washed under a stream of warm water. Before refitting. dry thoroughly.

If fluid does not flow from the carburetor after disconnecting the fuel hose, it is clogged. It can be cleaned or replaced with a new one.

If the tool is used frequently, the petrol pump may not work properly. After all, every part has an expiration date. It should be replaced or contact a service center.