DIY Husqvarna 137 chainsaw carburetor repair

In detail: do-it-yourself repair of the Husqvarna 137 chainsaw carburetor from a real master for the site my.housecope.com.

A chainsaw is needed in construction, and in gardening, and in landscaping - its presence greatly simplifies the implementation of a number of tasks for processing wood. The main unit of this tool is the engine, the operation of which largely depends on the state and settings of the carburetor. This is where the fuel mixture is prepared. This means that if the saw does not start, stalls or does not provide the required power, it is likely that the reason for this is improper operation of the carburetor. Fortunately, you can handle this yourself in many cases. Only for this you need to know and understand the device and principle of operation of this unit and, of course, the chainsaw itself.

The main purpose of the carburetor is to mix fuel with air in the required proportions. If the latter are violated, this is almost instantly reflected in the operation of the engine.

Stihl MS 181 C BE chainsaw carburetor

Chainsaw carburetors may vary in design. However, their basic elements and the principle of operation remain approximately the same.

Carburetor device:

This is a wind tunnel, across which the air damper is located - with its help the intensity of the air supply is regulated.

This part is located where the base tube is narrowed - here the air flow rate increases, i.e. air is always supplied to the carburetor under some pressure.

In this area, the fuel comes into contact with the air stream. Fuel enters the atomizer from the float chamber through the nozzle (metering device).

Float chamber

This is a container that allows you to keep the fuel mixture in a stable state.

Video (click to play).

Structural diagram of a chainsaw carburetor

The chainsaw carburetor works according to the following principle:

when the engine is started, the main flap opens and a stream of air is supplied into the air channel at a certain speed;
the air flow rate, as well as the level of the float in the chamber, are regulated by the position of the damper, namely, due to the difference in pressure in the float chamber and the air channel;
the fuel from the float chamber is sucked into the nozzle, and from there into the diffuser;
passing through the diffuser, the air captures the fuel entering there;
the resulting mixture is fed into the cylinder chambers through the inlet channels.

The principle of operation of the chainsaw carburetor

The pressure in the float chamber is approximately equal to atmospheric, but in the air channels of the carburetor, when the engine of the chainsaw is started, a vacuum occurs. Opening the damper increases the air flow rate. As a result, more fuel flows into the carburetor, and the number of revolutions of the engine shaft increases.

In the first hours of operation, the 2-stroke engine of the chainsaw requires running-in, on which the quality of its further work depends. During the running-in process, the primary adjustment of the carburetor is performed - the optimal parameters for the preparation and supply of the fuel mixture are set.

Chainsaw initial break-in: working with thin material

Most modern chainsaws are sold adjusted. Nevertheless, the quality of the factory settings does not interfere with checking - in the end, you will have to work with the instrument.

The first time you start the chainsaw, it must be gentle. Therefore, for several hours after the start, it is recommended not to overload the engine and only cut small branches and trunks up to 10 cm thick.

To insure against malfunctions in the carburetor of the chainsaw, simple rules will help:

Always mix gasoline and oil in accordance with the manufacturer's numbers. The proportions of the fuel mixture for the chainsaw engine
Do not prepare the fuel mixture in advance - the properties of gasoline and oil when mixed will lose over time. An exception is fuel for an intensively used tool, however, here, one should not exceed the approximately weekly rate.
Use the oil specified for your chainsaw engine. A fuel mixture with a non-standard composition will disable it seriously and for a long time.
When preparing the fuel mixture, take into account the influence of climatic conditions on its components.

The chainsaw must start correctly, provide a stable sprocket speed and smooth power increase / decrease. When the engine is running, there should be no extraneous knocks, pops and noises.

Professional hand-held chainsaw at work

The main thing during the initial running-in of the tool is to ensure that the fuel consumption corresponds to the power used, i.e. in practice, the saw should not go out, "sneeze", smoke and work in jerks.

Typical carburetor malfunctions are easy to recognize. They are expressed in the fact that the engine of the chainsaw starts up and immediately stalls or does not show signs of life at all. Well, or it consumes fuel with might and main, producing clouds of black smoke and aggressive vibrations instead of the required power.

Chainsaw carburetor operation diagram

Carburetor settings can be affected by:

lack of fixing the adjusting screws; Chainsaw adjusting screws
wear of the piston group; New CPG chainsaw Husqvarna 365
blockage of the fuel-air channels;
damage to air filters; Chainsaw air filter with nylon insert

If any problems are found, they should be rectified immediately. But how do you know if the carburetor is the problem? To do this, watch how your tool works.

Typical signs that carburetor settings are out of order include:

Unstable motor operation

As a rule, the reason for this is the use of an incorrect (lean) fuel mixture.

Excessive consumption of fuel

It is expressed in an increased emission of waste exhaust, which turns black. This means that the fuel is not completely consumed, i.e. the mixture is oversaturated.

Carburetor set correctly - saw starts the first time

Arbitrary changes in engine power

May be associated with damage to the fastening of the adjusting screws or the protective cap.

Increased fuel consumption accompanied by vibrations and pops

It speaks of critical wear of the piston group, therefore, adjusting the carburetor will postpone the overhaul only for a while.

"Sneezing" and engine jerking

This picture is observed when the carburetor channels are clogged or its filters are malfunctioning. In this case, adjustments should only be made after thorough flushing of the assembly.

Chainsaw fuel filter

Despite the fact that the carburetor is the most difficult part of the engine, you should not be upset if it detects malfunctions in its operation. Instead, you need to arm yourself with some tool, a knot design, and some healthy logic.

Chainsaw carburetor being repaired

First of all, you need to prepare a place for disassembly. This can be a workbench or a regular table. In addition, you need a rectangular piece of cloth or cardboard - on it you will neatly fold the carburetor parts. And, finally, a tool: for disassembly, you will need a set of open-end wrenches and screwdrivers, a special cleaning compound and an ultrasonic cavitation bath.

Chainsaw carburetor repair tool

First, you have to dismantle the chainsaw carburetor. This is done in this order:

To get to the carburetor, you need to remove the top cover of the chainsaw, which is fixed with three bolts. Removing the carburetor cover
After removing the cover, do not forget to remove the gasket, which is an integral part of the air filter, and the body of the latter, for which you need to unscrew the corresponding nuts and / or remove it from the clips.
On the right side of the carburetor there is a fuel hose, it must be removed together with the air damper drive rod, not forgetting to pull it off the fitting on the left. Removing the fuel hose and drive rod
After removing the hose and rod, remove the throttle cable tip from the fixing socket and finally dismantle the gasoline hose. Removing the throttle cable
The carburetor can then be removed from the mountings for later disassembly. After removing the gasoline hose, the carburetor is ready for disassembly.

Disassembly of the carburetor must be carried out in the manner prescribed by the design and functional solutions of its elements. Chainsaw carburetor parts do not differ in size, so they need to be folded carefully and in order, trying not to lose anything.

After disassembly, it is necessary to carry out troubleshooting and replace damaged or worn parts. Next, the entire set should be rinsed with a special product, dried and wiped with a dry, lint-free cloth. The jets and tubes of the assembly must be blown out with compressed air, or, in order to more thoroughly remove the formations on their inner surfaces, they must be treated with ultrasound before that.

Reassembly of the carburetor is carried out only after complete cleaning, drying and blowing with compressed air. At the same time, do not forget that some gaskets and seals, even if they are not damaged, must be replaced.

You can start adjusting the carburetor provided it is correctly troubleshooting, high-quality assembly and flawless re-installation on the engine.

Carburetor setting principles:

screws H and L adjust the ratio of air and combustible mixture, i.e. throttle position. Tightening the screws clockwise leads to a depletion of the mixture and the transition of the engine to low revs. When unscrewing (counterclockwise), the mixture is enriched, and the engine speed increases;
screw T is responsible for adjusting the idle speed: turning it clockwise gives an increase in their number, against - a decrease;
screws are adjusted in L-H-T order. Chainsaw Carburetor Calibration

The general adjustment algorithm looks like this:

Initially, the highest idle speed is found by turning the screw L and then returning it by ¼ turn counterclockwise. If the chain rotates at idle speed, turn the screw T in the same direction until it comes to a complete stop.
With the engine warm, running at full speed, turn the screw H by ¼ of a turn to the left, then let the engine run for 10 s to check the maximum speed using a tachometer. It must correspond to the number indicated in the instrument's passport.
After the calibration with screws L and H, the idle speed is adjusted with screw T. If done correctly, the engine will run evenly in all positions. Memo for calibrating the carburetor on the body of the chainsaw

Upon completion of the adjustment, it remains to reinstall the cover of the chainsaw with an insulating gasket, after which you can start the main work. If the settings are correct, the chainsaw engine will get the optimal fuel mixture. This will ensure its normal efficiency, as well as the overall comfort and safety of working with the tool.

Home »Adjusting the Husqvarna 137 Carburetor With Your Hands

Why you need to tune your Husqvarna carburetor

The carburetor is one of the important mechanical components that make up a chainsaw. In his tasks. mix fuel with air and supply the resulting composition to the engine. But during the operation of the chainsaw, situations arise when adjusting the carburetor Husqvarna becomes necessary.Depending on the reasons, the carburetor adjustment of the 142 chainsaw and other series is performed to prevent the following situations:

the presence of interruptions in the operation of the engine, accompanied by its shutdown;
excessive fuel consumption during operation.

Since the carburetor affects the quality of the fuel, in the former case, the need for carburetor settings on a 137 or other professional series saw, such as the Huskvarna 240 or 260, implies influencing enough fuel entering the carburetor to mix with the air mass. It is known that maximum productivity is possible only with a certain ratio of these substances. The second moment of adjusting the chainsaw of a carburetor mixer is due to the lack of incoming air, which causes underheating of the injected gasoline with its output in the form of thick smoke. Timely change of parameters with your own hands to reduce the amount of fuel introduced will significantly reduce the consumption of this product.

The renovation itself will save not only the budget, but also the time spent on transportation and the queue at the workshop. The same applies to changing various spare parts in a gasoline-powered tool such as a chain on a chainsaw or a universal trimmer head on a motor pump or oil for electric drives.

Neglecting deviations in the normal operation of a gasoline tool is fraught with the fact that even with a strong desire Husqvarna chainsaw carburetor adjustment may be useless and it will be necessary to replace either this unit or already engine components that are subject to prolonged thermal or mechanical stress. Therefore, as soon as the saw shows the first deviations, it is necessary to make immediate repairs in the form of simple corrective actions. Among such changes in work, we note:

Hare to feed the Chinese and the goons. Disassemble and clean carburetor , change dry diaphragms, twist and.

In all chainsaws Adjusting the Husqvarna carburetor happens in a similar way, since all products have the same set of mechanisms. For example, if you are tuning systems in 236 series gasoline tools, the process is followed by finding the highest idle speed by slowly turning the adjusting screws L. for a low speed jet, T. for a high speed jet and adjusting idle move... The self-adjustment process consists of several periods associated with the rotation of the L and H screws, controlling the throttle valve for and adjusting the T screw, adjusting the idle speed. Depending on the insertion parameter, the saw is adjusted in the following sequence:

After warming up, turn screw L to maximum idle speed. Once found, turn the actuator in the direction of decreasing rotational speed ¼ turn of the screw.If the chain starts to rotate, the adjustment of screw T is made in the cycle until the chain stops.
Adjustment of screw H on the power saw carburetor is done within 10 seconds of running the engine at full speed after ¼ of a revolution. If the maximum load is not reached, the operation is repeated. Insufficient adjustment will result in squeals, while exaggerated settings will cause the muffler to release more smoke.
Adjustment T of the idler screw is made in turn during the cycle until the chain starts to rotate. Once this happens, the screw is screwed in until the mechanism stops.

Of course, introducing carburetor settings will allow your tool to perform as efficiently as possible, but don't forget about lubrication. Kosa Motors recommends buying special purpose chain saw oil for machinery as timely maintenance will give the tool an extra period of quality service.

Chainsaws. these are very effective and efficient tools that can be used when it comes to processing trees and wood for lumber or firewood. But for their work

Along with such basic elements of the chainsaw as the engine, carburetor and oil pump, the latter role. Because the condition of the chain is directly reflected in the operation of the saw itself. And if

Among the dozens of models of chainsaws, one of the most interesting in its class is worth noting - the Husqvarna 137 chainsaw. Its low power and simple characteristics make the model an amateur class, not intended for professional use or frequent work. With a weight of 4, 6 kg, the device produces a power of 1.6 kW, therefore it is used in a private area for simple purposes - cutting knots, branches, preparing firewood, etc.

But in order to keep the chainsaw in good condition, even if it is branded and has low power, you need to service it on time. It is important to monitor indicators such as carburetor performance and chain condition. The carburetor of the Husqvarna 137 chainsaw assumes timely tuning and adjustment of the main indicators. In principle, the procedure is carried out according to standard rules, but the design of the device assumes certain nuances.

To begin with, a Walbro carburetor model WT-660 is installed on the chainsaw. This is a popular model, well-tuned for a variety of settings. Accordingly, three screws are installed in it:

Screw T - is responsible for idling;
Screw H - allows you to adjust high rpm;
Screw L - Adjusts low rates.

The process is carried out in the following stages:

We preheat the chainsaw, letting it idle normally, showing the optimal number of revolutions.
First of all, we adjust the L screw (high rpm), looking for the highest value. After that, unscrew the screw a quarter of a turn.
Stage two - we achieve stable operation of the circuit. If, during the above action, the chain continues to rotate, we find the screw T and try to adjust it so that the chain does not spin, working stably at idle.
As soon as the motor is well warmed up, unscrew the H screw by ¼. After a couple of seconds of operation, the motor should run stably.
If there is a squeal in the engine - the mixture is too lean, you will have to unscrew the screw H, if a lot of smoke is formed - an enriched mixture is obtained, we tighten the screw a little.
The final stage is the idle setting. When the engine is running, turn the screw T to the right. It is necessary to achieve such a state in which the Husqvarna 137 chainsaw will work, and the chain will not rotate without gas.

We also advise you to look at the article on how to adjust the carburetor on the Stihl chainsaw, using the example of the Stihl MS 250 model: adjusting the carburetor.

Now you know how to adjust your Husqvarna 137 chainsaw. Please note that each time you adjust the propeller, you need to test the resulting operating mode.In some cases, it is possible to achieve correct operation and a good set of revolutions by deviating slightly from the above instructions.

The chainsaw is a great helper for any man living in his home. The chainsaw device is a complex system that requires careful maintenance and requires increased attention. Today you will learn how to adjust the carburetor of a Husqvarna 137 chainsaw with your own hands in the garage? Image - DIY Husqvarna 137 chainsaw carburetor repair

The reasons why it will be necessary to adjust this unit can be listed for a very long time.

Among the main malfunctions are the following:

Increase in idle speed;
The appearance of a large amount of smoke during operation;
Deterioration of starting properties;
Insufficient tool power when cutting.

This is not a complete list of all known faults. Sometimes a procedure such as adjusting the carburetor on a Husqvarna chainsaw must be carried out after a major overhaul of the power plant or after maintenance.

The developers of the Husqvarna 137 write in the passport that the carburetor adjustment must be carried out before and after running in the tool.

On chainsaws of these models, the Walbro carburetor is most often installed from the factory. Before adjusting the Walbro carburetor on a Husqvarna chainsaw, you must have a minimal understanding of its structure and know how it works.

For accurate delivery of fuel with oil, the operation of the fuel pump is used, which is mechanically driven from the crankshaft. The carburetor itself is equipped with a diaphragm and a special needle valve, which are responsible for regulating the pressure in the system. Thanks to them, the correct operation of the metering chambers and the pump is organized, which improves the operation of the chainsaw.

When operating the chainsaw, a fuel mixture of gasoline and oil in a ratio of 15: 1 by volume should be used, that is, 1 liter of oil should be added to 15 liters of gasoline and the mixture should be thoroughly mixed. The amount of gasoline and oil in the fuel mixture is shown in this table:

ATTENTION! Application of oils: Lukony-2T; TNK-2T OIL: AZMOL Sport 2T GD ”and others, and used oil in the fuel mixture will lead to failure of the connecting rod needle bearing.

Two dampers are responsible for the air supply, which are installed on the diffuser chamber. The first can regulate the amount of air at the moment the accelerator is pressed and is called the throttle, and the second ensures the limitation of the air supply at the moment when the chainsaw is cold started. To facilitate starting, the throttle is closed, which means that the mixture becomes rich, as it is saturated with a large amount of fuel. It is easier to work in this mode, but since it increases fuel consumption, this mode is not applied throughout the entire operation. The saw is worn out.

A check valve injector is used to spray fuel into the cylinders.

The principle of operation is simple: it restricts the return of the mixture back to the chamber. All the main malfunctions of chainsaws, most often, manifest themselves when this mechanism does not work properly.

The most common mistake is storing the instrument for too long. The fact is that with prolonged inactivity, the valve sticks and either fills the cylinder with fuel or simply does not open.
The second problem is an increase in the amount of air in the mixture caused by its suction from the outside when the valve does not work properly. It is no longer possible to regulate here, since in this case only valve repair or its replacement helps, since the saw will not react to the adjusting screws.

Unlike a car, tuning a chainsaw carburetor provides for three adjusting screws that are responsible for the quality of the mixture, the amount and nominal speed of the crankshaft of the Husqvarna engine:

screw L - designed to adjust the number of revolutions when operating in medium modes and regulates low revolutions;
Screw H - adjusts the number of high revolutions and thrust of the installation;
T - designed to adjust the total amount of fuel and adjust the operation of the throttle assembly.

It is not recommended to touch the first two screws without special skills. The problem is that if you configure them incorrectly, then the carburetor will not be able to start the engine, or even start it in the wrong operating modes. Such adjustment of the screw can lead to its early wear and failure. This principle is embedded in many devices.

No table lists the settings parameters. Therefore, you should not look for these data in special literature, but only strictly follow the instructions. The table in the passport has only informational value regarding the characteristics of the engine.

In order to correctly adjust the carburetor of the chainsaw, you need to stock up on the appropriate tool in advance.

You will need the following list:

The most common screwdriver, with which you can unscrew or tighten the adjusting screws;
A tachometer designed to count the revolutions of the crankshaft. It is necessary when adjusting the idle speed, since it is quite problematic to determine the number of revolutions per minute by ear;
Phillips screwdriver. It is needed to be able to unscrew the screw (T);
Compressor with a special gun connected to them. The blowing device will help get rid of excess debris and dirt, since the carburetor must always be clean.

Many Husqvarna chainsaws use special section adjusting bolts. See in advance which ones you have installed and purchase the appropriate kit. This will help to avoid many difficulties at the initial stage.

Like all other saws, the husqvarna has the same carburetor adjustment algorithm. Therefore, the instruction will be relevant for other tools and models of chainsaws such as Husqvarna 142, 236.

Before starting work, make sure the air filter is clean and all other components are working properly. The fuel supply to the float chamber should work without interruptions, and the ignition system is set up correctly and has a fresh spark plug.

Set the carburetor to factory settings. This must be done with the engine stopped.
Now you can start the engine and be sure to warm it up for several minutes. Adjustment of the XX carburetor of the Husqvarna 137 is carried out only on a warm engine.
Turning screw L clockwise, you need to set the highest crankshaft speed, then turn back a quarter of a turn. Adjust the speed of the crankshaft with the screw T so that the chain does not rotate. It must not be set in motion without depressing the accelerator.
Now you need to set the maximum speed and their power. It is enough to connect the tachometer to the ignition system and set the maximum possible speed using the accelerator. Compare them with your passport data. If they differ, then unscrew or tighten screw H. By changing the range, you can create restrictions to make the saw work efficiently and save the motor resource.

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Once the adjustment of the Husqvarna carburetor is completed, you need to make sure that the engine is stable and the saw easily picks up and drops the required speed. It is considered abnormal to rotate the chain at idle speed, therefore it is necessary to re-adjust its connection to the clutch with screw H.

Do not forget that the unit is not configured immediately: you need to wait a while, since the Husqvarna chainsaw does not immediately respond to a change in the position of the screws. This time can range from 5 to 15 seconds. This time does not prescribe the table, so you can only find out experimentally.

If, after adjustment, a huge amount of smoke appears during operation, then the supply of the fuel and oil mixture must be adjusted. For these purposes, rotate the screw L.

In order for the chainsaw to start anyway, even if the setting is incorrect, the factory settings of the screws H and L are applied.Most Husqvarna chainsaws can be started by unscrewing both screws exactly one and a half turns. Only then can the position of the screws be changed to achieve the desired fuel consumption and maximum efficiency. It is regulated by XX also after these manipulations.

If you still have questions about adjusting the carburetor on the Husqvarna 137 chainsaw and other models of this line, I recommend watching this video:

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

Replacement of various gaskets at the joints of sealed parts;

Cleaning or replacing the filter elements of the carburetor;

Replacement of pump elements or valves;

Almost all of the above parts can be positioned as a repair kit, which is used for minor repairs of carburetors. After installing them, the carburetor of the Husqvarna 137 chainsaw can forget about malfunctions for a long time, and the regulation will become easier.

The chainsaw is an indispensable assistant for every real owner.

Since the inception of the instrument, its popularity has grown rapidly.

So, the Husqvarna 142 chainsaw has high functionality. It is widely used not only in forestry, but also in personal plots.

Choosing a chainsaw is pretty easy. So, it is best to pay attention to well-known brands such as Husqvarna. This company produces a wide range of such tools. Husqvarna 240 and other models are of high quality and functionality. But, unfortunately, even such tools are not insured against breakdowns.

After the 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 easily.

But, here it is worth considering that the chainsaw often fails. This is due to the fact that it is subjected to heavy loads during operation. Therefore, you must always be ready to eliminate breakdowns.

Today there are a large number of workshops that offer their services for the repair of chainsaws and other tools. But, this does not mean that if a malfunction occurs, you must immediately run to the repair shop.

Some faults can be corrected by hand. To do this, you just need to know the main causes of breakdowns and how to eliminate them.

So, in the process of frequent use of the tool, breakdowns may occur:

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

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

Read the article on self-repair of the Stihl 180 chainsaw here.

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

You need to do the work very carefully. For this, a special hook is used. First you need to disconnect the wire and remove the candle.

If it is dry, it means that no fuel is entering the cylinder.

If there is spray on it, then the breakdown may lie in the carburetor or in the start rule. To fix the breakdown, you need to wipe the spark plug and shut off the fuel supply. The starter is then started.

Thus, the combustion chamber is ventilated and excess fuel is removed. After that, the candle is installed in place and the chainsaw starts up.

If there is carbon deposits on the candles, then this indicates that the Husqvarna 137 chainsaw is running on low-quality fuel. Carbon deposits are also formed as a result of an incorrect fuel to oil ratio. In order for the tool to work as long as possible, you need to carefully study the instruction manual.

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

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

If the tool does not work, then this may be due to the fact that no fuel enters the cylinder.

First of all, you need to check the fuel filter for contamination. 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 precisely in the filter.

In this case, the filter must be cleaned. It goes directly through the tank. The filter is cleaned and installed back. It is washed under running clean water.

After that, the filter is dried and carefully put back. To prevent such a problem in the future, it is necessary to periodically clean the filter.

If cleaning the filter did not give a positive result, then you should pay attention to the breather. A clogged hole will result in insufficient air flow into the carburetor.

With frequent use of the chainsaw, muffler malfunctions may occur. It is very simple to define it.

If the tool is working normally, and when the speed increases, it starts to stall, then the reason lies in the spark arrester.

Most often, the breakdown of this element is due to clogging with combustion waste. You can easily solve this problem with your own hands.

First of all, you need to remove the muffler and disassemble it. It is worth considering here that spark arresters are not understandable in some models. After that, the muffler is cleaned of carbon deposits. For this, use special detergents.

When the carbon deposits have been removed, the spark arrestor is dried with a hair dryer. At the final stage, the muffler is installed in place.

As for the carburetor, it can be adjusted and repaired at home. But in order to perform such work efficiently, you need to know the structure of the carburetor and the principle of its repair.

Poor repairs can cause serious damage to the device. Therefore, experts recommend that you carry out its adjustment and repair in special workshops.

As you can see, it is fashionable to fix many of the chainsaw malfunctions with your own hands. But to do this, you need to have certain information. If you are not confident in your abilities, then it is better to seek help from specialists.

Video (click to play).

Watch the video in which the specialist shows in detail the disassembly-assembly process for DIY repair of the Husqvarna 142 chainsaw: