Why the chainsaw won’t start or stalls: causes and solutions

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

The main reasons for chainsaw failure

Although the chain saw is a simple device, from time to time problems arise in its operation, which can only be eliminated by disassembling it. Examples include the following faults:

• the chainsaw does not gain speed;
• the chainsaw stops functioning when cutting;
• 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 equipment is of great importance. If all the rules of use are followed, problems with a high probability lie in the most obvious ones. When looking for the causes of problems, it is advisable to start by checking the simplest part of the chainsaw and finish with the most complex.

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 you need to sequentially check the functioning of all its elements. First you need to check the fuel tank. If the reason is not the volume or quality of the fuel, then the likely cause of the malfunction may be the spark plugs. The spark plug gap should not exceed 0.5 millimeters. If it is too small, this means that carbon deposits have deposited on the candles. In this case, you should remove the spark plugs, clean them, then put them back in place and try to start the chainsaw. In addition, it is advisable to completely replace the spark plugs with new ones from time to time, even if they are in good condition.

Then you need to check the condition of the fuel filter and carburetor. Cleaning the fuel filter yourself is not a difficult task, but carburetor repair is best left to specialists.

Malfunctions of Husqvarna Chainsaw 142

Do-it-yourself repair of the Husqvarna 137, 142, 240, 365 chainsaw - video
The chainsaw is an indispensable assistant for every real owner.

Since the instrument's inception, its popularity has grown rapidly.

Thus, the Husqvarna 142 chainsaw has the highest functionality. It is widely used not only in forestry, but also on private plots.

Choosing a chainsaw is quite simple. So, it is best to focus on well-known brands such as Husqvarna. This company produces a wide range of such tools. Husqvarna 240 and other models are of the highest quality and functionality. But, unfortunately, even such tools are not immune from breakdowns.

Possible faults

After a chainsaw appeared in the house, many owners breathed a sigh of relief.

After all, this tool allows you to solve complex problems quite quickly and simply.

But, here it is worth considering that the chainsaw often fails. This is due to the fact that it is subjected to enormous loads during operation. Therefore, it is necessary to always be prepared to eliminate breakdowns.

Now there are a huge number of workshops that offer their services for repairing chainsaws and other tools. But this does not mean that if a malfunction occurs, you need to immediately run to a repair shop.

Some faults can be removed with your own hands. To do this, you just need to know the main reasons for the occurrence of breakdowns and the method of eliminating them.

Thus, during frequent use of the tool, breakdowns may occur:

• carburetor;
• muffler;
• oil pump;
• ignition and fuel supply systems.

Each of these breakdowns can be fixed with your own hands . The main thing is to know the sequence of work when eliminating a particular malfunction.

Read the article about self-repair of the Shtil 180 chainsaw here.

Ignition system

If the tool suddenly stops working, then the first thing you need to check is the ignition system. And you need to start with a candle.

The work must be done very carefully. A special hook is used for this. First you need to disconnect the wire and remove the spark plug.

If it is dry, it means that fuel is not entering the cylinder.

Disassembly and assembly of the HUSQVARNA 142 chainsaw

my chainsaw start?

.Cause.How to eliminate.

The chainsaw does not start or does not start well. Reason and how to fix it.

common problem of huswarna 137/142

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If there is splashes on it, then the breakdown may lie in the carburetor or in the starting rule. To fix the breakdown, you need to wipe the spark plug and turn off the fuel supply. After this, the starter starts.

Thus, the combustion chamber is ventilated and excess fuel is removed. After this, the spark plug is installed in place and the chainsaw starts.

If there is carbon deposits on the spark plugs, this indicates that the Husqvarna 137 chainsaw runs on low-quality fuel. Carbon deposits also form as a result of an incorrect ratio of fuel and oil. In order for the tool to work as long as possible, you need to carefully study the operating instructions.

If there is carbon on the candle, it must be carefully removed. You can use an awl for this. The electrodes are carefully rubbed with sandpaper. After this, it is installed in place. You also need to fill in the fuel that is recommended for this model of chainsaw.

the article about repairing the Partner 350 chainsaw with your own hands here.

Problems with the fuel supply system

If the tool does not work, it may be due to the fact that there is no fuel entering the cylinder.

First of all, you need to check the fuel filter for contamination levels. To check this, you need to remove the fuel hose and check how fast the fuel flows.

If it is supplied under low pressure, then the problem lies in the filter.

In this case, you need to clean the filter. It is taken directly through the tank. The filter is cleaned and installed back. It is washed under running clean water.

The chainsaw starts and stalls - the reason

If the chainsaw starts and stalls during 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, measure the oil level. If the amount of lubricant is sufficient, then the reason may lie in the tube that leads it to the lubrication mechanism.

Another reason could be a carburetor failure. If it only needs adjustment, you can do it yourself according to 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 chain saw stalls when tilted, since the remainder of the fuel mixture ends up in the part of the tank opposite to the place where the suction tube is located.

The chainsaw has stalled and will not start

If the tool stalls and does not start, you should first check the presence of fuel in the tank. Strange as it may sound, many people forget about this and when such a situation arises, they immediately try to repair the instrument, which can lead to serious damage.

In a situation where the saw has stalled and there is still gas in the tank, you need to evaluate how the saw worked up to that point. Maybe during work at the last moment an extraneous sound appeared, a grinding sound, a ringing sound, a loss of power occurred, or the tool suddenly stopped. All this allows us to preliminary assess the situation.

Engine jammed

Quite often there is a situation where the saw was working and suddenly stalled, the cause of which was engine jamming, which in turn occurred as a result of a broken piston skirt, destruction of the crankshaft bearing, a flyout of the corkscrew ring of the piston pin, or a break in the piston ring.

A seized engine can be easily determined by pulling the starter cord. If the starter does not turn, it is most likely jammed, and further repairs are only possible at a service center.

Broken fuel wire

When the chainsaw operates, vibration occurs, which can cause damage or breakage of the chainsaw's fuel line. In this case, the chainsaw will stall and it will be impossible to start. To diagnose a malfunction, you need to conduct an inspection and determine the presence of fuel leaks.

Overheat

Overheating of the engine during operation can cause the saw to stall and not start. Overheating is quite dangerous, as it can cause the piston in the cylinder to melt and jam the engine. At the first cases of overheating, it is worth diagnosing the tool for the presence of foreign air leaking into the engine and adjusting the carburetor.

Air leaks, as well as incorrect carburetor adjustment, affect the maximum number of engine revolutions and its lubrication, which in turn causes overheating and jamming of the tool.

Why does a chainsaw stall when heating up?

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

• The carburetor is not adjusted correctly. This problem can be identified by how the device starts up when cold. If it is carried out without closing the air damper, and the engine starts without a preliminary flash, this means that after the engine warms up, fuel floods the spark plug. The solution to this problem is to adjust the carburetor. Details about carburetor adjustment
• Malfunction of the coil (ignition module). This problem can be identified by sequentially checking the spark, first on a cold and then on a hot engine. If there is no spark on a hot engine, then you need to replace the ignition coil.
• Spark plug faulty. In this situation, as in the case of a faulty ignition module, the spark disappears when the engine heats up. You need to replace the spark plug with a new one, and if this does not solve the problem, you should check the ignition module and the distance between it and the flywheel.

What is a carburetor?

A carburetor is a device that has the following functions: mixing gasoline and air, creating a combustible mixture to power the engine and regulating its flow. Husqvarna carburetor parts are made by casting from various alloys with further mechanical finishing. This ensures the high quality of Husqvarna carburetors, which you can verify by purchasing this spare part at the 220 Volt store. This is an integral element of many tools among garden petroleum equipment, for example, chainsaws, brush cutters, and lawn mowers. In a number of situations, for example, with poor fuel filtration, the carburetor may fail. Fortunately, this will not be a reason to spend money on a new tool, because you can buy a carburetor separately (both regular and assembled).

A carburetor is a device that is designed to prepare a combustible mixture of liquid fuel and air, which ensures the operation of carburetor internal combustion engines.

Modern carburetors are equipped with many different devices and systems that have numerous holes of different calibers, an extensive network of channels, pneumatic chambers and lever transmissions.

The carburetor is one of the main parts of any fuel-powered equipment. To ensure normal and stable operation of the equipment, the carburetor must be periodically checked and, if necessary, adjusted.

Chainsaw carburetors have three adjustment screws. The “L” screw is designed to regulate low speeds, the “H” screw is responsible for regulating high speeds, and the “T” screw is for idling the chainsaw. So, with screws “H” and “L” the ratio of the mixture of air and gasoline is adjusted; when the screws are unscrewed, the speed increases, as the mixture becomes richer, and when tightened, the speed drops.

Generator carburetors often have only one adjusting screw, but it is possible to find many other modifications of this spare part. Its adjustment eliminates excessive fuel consumption and leakage of unburnt oil.

However, there are quite common cases when adjusting the carburetor cannot eliminate problems in the operation of the equipment. This occurs due to the final failure of the part, which occurs as a result of natural wear or due to improper use.

You can purchase a new part for your equipment in our online store. From us you can buy carburetors for brush cutters, chainsaws, gas cutters, diesel and petrol generators, as well as carburetors for blowers and many other equipment.

Why does a chainsaw stall under load?

Sometimes the chainsaw is unable to function properly 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 will also not be able to reliably maintain idle speed.

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

If these actions do not lead to the desired result and the engine crankcase and carburetor are sealed, then you need to adjust the carburetor.

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

The chainsaw does not hold idle speed - search for causes and repairs

There can be several reasons for this common breakdown. Basically, the loss of speed when the internal combustion engine is idling is associated with engine malfunctions, loss of compression in its standard cylinder, ignition system, carburetor, and also an incorrectly prepared fuel mixture. In searching for the exact cause of a breakdown, the operator may encounter the following problems:

accumulation of resinous deposits and ash, small debris on the air and fuel filters of the chainsaw - if possible, the elements must be washed. If, in addition to blockages, cracks or holes were found on the surface of the filters, then the foam elements will need to be completely replaced;

• spark plug defect - cracks, chips or burrs disrupt the operation of the part, which leads to a loss of engine speed when idling. In this case, the spark plug will need to be replaced;
• loss of factory carburetor settings - increased pressure on the power unit leads to an increase in its vibration. As a result, the spring-loaded metal bolts of the fuel assembly lose their original position, which leads to a loss of revolutions of the running engine;
• cracks and holes in the fuel pipe - to repair the chainsaw, the hose must be replaced;
• clogged internal walls of the muffler - dismantling, thoroughly washing and reinstalling the muffler will help solve the problem. If large burrs have formed on the internal cavities of the element, it will soon begin to rust. To prevent this, it is better to replace the muffler immediately;
• malfunction of the CPG of the power unit - the appearance of microcracks or burrs on the inner surface of the cylinder and piston will lead to loss of tightness of the working chambers. As a result, the amount of air required to enrich the fuel mixture will be disrupted - this will result in a loss of engine speed when idling.

The stable operation of a chainsaw engine largely depends on the quality and proportion in which the fuel mixture is prepared. An excess or lack of oil will lead to a gradual deterioration in the performance of the power unit and over time it will not be able to operate even at idle. To prevent this, you must strictly adhere to the ratio of gasoline and oil indicated in the instructions for the chainsaw you are using.

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

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 chainsaw, open and close the fuel tank and turn it on again, it will work normally for about five minutes, and then again stop picking up speed or stall.

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

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Owners of chainsaws sometimes have to deal with the fact that the saw, for no apparent reason, stops working normally. In our article we will try to figure out why the chainsaw stalls in various operating modes, as well as describe how the malfunction can be diagnosed.

Why does a chainsaw stall when heating up?

The situation in which a chainsaw starts up when cold, but may stall while warming up, is familiar to many who deal with them. The main reasons for this behavior of the saw are as follows.

• The ignition module (coil) is faulty. 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.
• The chainsaw carburetor is not set correctly (fills the spark plug hot). You can determine the problem by how the saw starts when cold. If for a cold start it is not necessary to close the air damper, and the engine starts without a preliminary flash, then the fuel mixture is not formed correctly and after the engine warms up, the fuel floods the spark plug and makes starting impossible. The problem is eliminated by adjusting the carburetor.
• The spark plug is faulty. In such a situation, similar to a faulty ignition coil, the spark disappears when the engine heats up. 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 using a multimeter or by replacing it with a known good one. Checking the primary and secondary windings with a multimeter is carried out in resistance measurement mode. The resistance of the primary winding, the working coil, is 1 kOhm - the secondary is 4 kOhm.

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, “cold” or “hot”.

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

First, tighten the two screws until they stop, and then unscrew them until the chainsaw engine starts. Only after this should you tighten or unscrew each screw in turn until the chainsaw engine runs as stable as possible and without failures when you press the gas handle.

Why does a chainsaw stall under load?

In some cases, the chainsaw is unable to work normally when under load and simply stalls. A common reason for this behavior is improper carburetor adjustment, or air leakage through the crankshaft seals or carburetor gasket. This behavior can also occur due to a leak in the carburetor.

It is best to diagnose the cause and eliminate the fact that the chainsaw starts and stalls under load at a service center, since a special tool is needed to check the tightness of the carburetor and engine crankcase.

A saw that is unable to operate under load will also be unable to maintain idle speed. They will "float". Diagnostics begins with checking the crankcase and carburetor for leaks. If air leaks are detected through the crankshaft seals, they must be replaced. If air leaks are detected in the carburetor, the cause can be eliminated by installing a repair kit of gaskets.

Basic elements of chainsaws

Before we begin to delve into the issues of tool breakdowns and repairs, 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 equipment whose operation directly depends on the internal combustion engine.

Single cylinder engine

It is also important that chainsaws are equipped with a single-cylinder engine , which runs on fuel such as gasoline. It is worth noting that, despite its 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 (saw) itself moves.

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

Before purchasing a chainsaw, be sure to explore all your options and choose the brand of chainsaw that suits you.

To make your choice easier, we have compiled a reliability rating of chainsaws for you.

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

Why does the chainsaw not pick up speed and stalls?

If the chainsaw is unable to gain speed a minute after starting or stalls when the gas trigger is pressed, 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 your chainsaw does not pick up speed and stalls after it has been running normally for about 5 minutes, the cause may be a defective fuel tank breather. The vacuum created in the fuel tank during 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. In this case, 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 picking up speed or stall.

The reason that the chainsaw does not pick up speed may also be excessive carbon deposits in the muffler, which makes it difficult to release exhaust gases, thereby reducing engine power and speed.

If you want to check the tightness of the crankcase, but do not have a special tool, you can use the following testing method.

Algorithm for checking the crankcase for leaks

• Remove the side cover and bar from the chainsaw.
• Unscrew the spark plug and insert a string with knots into the cylinder through the spark plug hole, thereby stopping the movement of the piston and crankshaft.
• You can use an old cord from a starter as a cord with knots, tying knots on it every 3-5 cm.
• Unscrew the chainsaw drive sprocket.
• 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 under the carburetor in the cylinder, while observing the crankshaft seals. If gasoline flows through them, it means the seals have become unusable and need to be replaced with new ones.
• It is better to entrust the installation of oil seals to professionals.

An indirect sign of crankcase leakage is oil leaks in the area of ​​the seals.

Possible faults

To get any tool working properly, you must first determine the exact cause of the failure. Let's look at the most common situations in which a chainsaw stalls.

Poor quality fuel

For trouble-free operation of the engine, the quality of the fuel used is important.
To keep your saw running smoothly, it is important to use the correct fuel. Fill the tank with gasoline with the octane rating recommended by the manufacturer. The second important condition is choosing the right oil. When purchasing, you should give preference to products from brands that produce lubricants with special additives.

The saw may stall if the proportions of gasoline and oil are not maintained during refueling. Due to lack of lubrication, the mechanisms jam and the tool stops working.

When mixing, you should use the proportions indicated in the instructions for the saw, and not the data on the oil packaging. The optimal ratio for most tool models is 25 ml of lubricant per 1 liter of gasoline.

For smooth operation of the saw, use AI-92 gasoline and two-stroke oil.

Filters are clogged

In this case, the saw runs idle, but when you press the gas it stalls. Most often this is caused by the use of low-quality gasoline. A clogged filter interferes with the flow of fuel to the engine, so the saw stops under load.

One of the important parts of the tool is the air filter. The performance of a chainsaw depends on its cleanliness and correct choice, which directly depends on the operating conditions of the tool:

• Cotton filter - installed on tools that are used with a saw in the warm season in dry air.
• The HD 2 filter is intended for use of the tool in winter or in dusty conditions (for example, during large-scale logging). Such parts are often equipped with professional tools.

Breather clogged

This small hole on the chainsaw tank is designed to allow air to enter. Depending on the model, it is located in the lid or in one of the walls. A clogged breather creates a vacuum inside the tank, which prevents fuel from entering the carburetor.

Fuel supply interrupted

A broken or damaged pipe is a possible reason why the saw stalls during operation. In this case, the tool starts up, since a small amount of fuel is present in the engine, but refuses to work further.

Storing the saw at sub-zero temperatures will cause the fuel tube to crack. The situation will be corrected only by replacing the part.

Problems with electrical components

Spark plugs are an important element of a chainsaw engine. The tool may stall if carbon deposits accumulate on their surface. Therefore, spark plugs need to be cleaned periodically and changed promptly.

Problems with the power supply can occur if the gap between the ignition coil and the magneto is damaged. This is caused by impacts when operating the saw in difficult conditions. For stable engine operation, the gap should not be more than 0.5 mm.

Expert opinion

Levin Dmitry Konstantinovich

The lack of a spark may be due to a clogged fuel filter or depressurization of the tubes. If the spark plugs are wet, it means that during operation of the tool they are filled with gasoline or oil.

Carburetor not adjusted or clogged

Problems with the operation of this unit are indicated by the saw stopping at idle.

The carburetor malfunctions in the following cases:

• clogged jets, nozzles, channels or filters;
• wear of oil seals, cuffs, gaskets;
• incorrect adjustment.

Dirty muffler

The accumulation of carbon deposits in this part leads to loss of power of the tool. The muffler can become clogged if the wrong or low-quality oil is used. Adding too much lubricant to gasoline can also cause clogs.

Poorly lubricated chain

Due to clogging or damage to the oil drive, the tool tire remains dry: the chain jams and the saw stalls during operation. The same problem can arise when using low-quality oil.

Malfunctions leading to improper operation of the chainsaw

There are a number of malfunctions that must be taken into account when diagnosing, since they can lead to interruptions in the operation of the saw.

1. Wear of crankshaft bearings. If the crankshaft bearings are worn out, runout will inevitably appear on the main shaft where the flywheel is attached. In such a situation, it is impossible to adjust the gap between the flywheel and the ignition coil, which leads to interruptions in spark formation and unstable operation of the chainsaw.
2. Impulse channel is dirty. The pulse channel serves to ensure the operation of the fuel pump; accordingly, its contamination will lead to improper operation of the pump, which will make it impossible for the saw to operate (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 certainly affect its ability to develop speed.
4. Dirty fuel and air filters.

Husqvarna saw disassembly algorithm

The process of disassembling a Husqvarna chainsaw is quite simple. In order to do everything correctly and not break parts of the housing or CPG, it is necessary to disassemble in the following order:

1. Top cover.
2. Chain and saw brake cover.
3. Starter.
4. Flywheel and clutch.
5. Front handle.
6. Carburetor.
7. Oil pump.
8. Engine.

Depending on the Husqvarna model, the disassembly procedure may vary slightly.

Important: before you start disassembling the chainsaw, you need to clean it. When using a saw, a lot of chips and wood dust are generated, which during disassembly can get into the internal parts of the Husqvarna chainsaw.

Removing the side cover and saw set

The side cover, or also called the saw chain brake cover, is held in place with two thirteen nuts.

After unscrewing the nuts, the cover is removed from the guide pins, after which you can remove the bar and chain from the chainsaw. Some models of Husqvarna saws have a special mechanism installed that allows you to dismantle the cover and saw set without the help of special tools.

Starter

The starter is located on the right side of the Husqvarna and is held in place by several screws. By unscrewing them, you can easily remove the starter and thereby gain access to the flywheel and ignition coil.

Removing the flywheel and clutch

In order to unscrew the flywheel nut, you need to unscrew the spark plug and install a piston stopper in its place.

If you don’t have a special stopper, you can use an old cord from a chainsaw starter instead. It is necessary to tie knots on the lace at a distance of 2-3 cm, then, using a screwdriver, insert it through the spark plug hole inside the cylinder. The cord will limit the stroke of the piston, thereby preventing the crankshaft from turning and protecting the piston from damage.

Once the piston stopper is installed in the cylinder, the flywheel nut can be loosened. After the nut is unscrewed, it is necessary to use a hammer and a drift made of soft material to apply one sharp blow, installing the drift on the flywheel mounting shaft. This is necessary to remove the flywheel from the shaft, since the design provides for the installation and tightening of this element with great force.

You can learn more about how to properly remove the flywheel from a Husqvarna chainsaw, as well as how to completely disassemble the saw by watching the video. The wizard explains the entire process step by step and demonstrates all the necessary tools:

In order to unscrew the clutch you will need a special key. If there is no key, then it can be made from an old twenty-two head, grinding it in a certain way using emery.

The clutch has a left-hand thread and rotates clockwise.

Do not try to unscrew the clutch with a hammer and chisel, as some craftsmen advise. Using these tools, you risk breaking the clutch housing and increasing repair costs. It can also damage the crankshaft bearings.

Front handle

Removing the Husqvarna front handle is quite simple, as it is attached to the shock absorbers with screws.

Air filter and carburetor

To remove the carburetor, it is necessary to disconnect the fuel hose and damper rods from it; this can be done conveniently after the air filter is removed, which is installed immediately behind the carburetor and held in place with two 10mm nuts. After the air filter is removed, the fuel hose and the rods are disconnected, just pull the carburetor towards you and remove it from the studs.

Use tweezers and medical clamps to remove the carburetor.

Oil pump

On Husqvarna, the oil pump is installed on the right side of the chainsaw. It can only be removed after the clutch has been released. Removal does not require a special tool, because... The fastening screws are made for a regular Phillips screwdriver. After the screws are unscrewed, it is necessary to lift the pump and disconnect the oil hoses from it.

Engine

To remove the engine on a Husqvarna chainsaw, after the carburetor, clutch, flywheel and muffler have been removed, you will need to unscrew the four screws securing it to the body.

After the engine is removed, you can unscrew the ignition coil from it, remembering to first disconnect the wires leading from it to the ignition switch. The coil can also be removed immediately after the starter is removed.

Assembling the Husqvarna chainsaw should be carried out in the reverse order, and the flywheel nut and clutch must be tightened with the force specified in the chainsaw operating instructions.