Do-it-yourself repair of Husqvarna and Shtil chainsaws: video

The device of the Husqvarna 142 chainsaw

The Husqvarna 142 chainsaw is equipped with a motor, the production of which used proprietary X-Torq technology. Thanks to this, the engine consumes less fuel without losing efficiency and operating efficiency.

To cool the engine, Husqvarna uses the Air Injection system, which increases the duration of the intervals between air filter replacements and also reduces wear on important engine parts. To dampen vibration, the saw is equipped with another proprietary technology – LowVib. It consists of several dampers that act as shock absorbers.

The Husqvarna 142 saw comes with a Japanese Walbro carburetor. It is characterized by durability and increased volume, which allows you to prepare a large amount of fuel mixture in one cycle.

What should I do

It is important that sparks on the chainsaw cannot be caused by a malfunction of the fuel system. In order not to look for problems with proper ignition, this problem must be solved immediately

The carburetor of a chainsaw can “overflow,” that is, throw too much fuel into the combustion chamber. Inside the candle there is a porcelain insulator from which a metal core emerges. On it, under the plate, they come into contact with the “ground” (minus) and a spark occurs.

But if the space inside the spark plug between the bead and ground is filled with excess fuel, especially along with conductive contamination, the circuit (spark) can slip inside the spark plug. There will be no sparks where needed.

However, if there is no spark at the chainsaw, the fuel will not burn and the spark plug must simply be wetted with fuel while the carburetor is running. It is almost impossible to visually determine whether the spark plug is overfilled and therefore not sparking or not sparking excessively. Therefore, in order to accurately diagnose this “key point” (the carburetor or inflammation is faulty), you need to have 2-3 guaranteed serviceable spark plugs on hand.

1. Let's put a working candle.
2. Spark checked.

If a spark occurs, this means:

• The old spark plug was faulty;
• The old spark plug worked but was filled with fuel.

The working spark plug is screwed into place and they are trying to start the engine. If it starts working correctly, the problem is solved. If not, turn the spark plug back on and watch for a spark. There are no sparks - another dry working spark plug is placed on them.

The spark burns, the candle burns, they try to start. If it does not start again, the spark plug is turned off, causing a spark. If the spark on your chainsaw disappears again and the spark plug fills up, there is an almost 100% chance that the cause is an overfill.

Adjusting the carburetor of the Husqvarna 142 chainsaw with your own hands

Tuning the carburetor of the Husqvarna 142 chainsaw makes it possible to get rid of a number of problems.

Their list includes:

• slow engine acceleration;
• failure to achieve maximum torque;
• frequent engine shutdown;
• the appearance of loud knocking noises when the tool is operating;
• increase in the amount of fuel consumed.

If you do not adjust the saw's carburetor in time, this will lead to more serious damage that will damage the engine and ignition system.

As the operating instructions indicate, setting up the Husqvarna 142 carburetor should be done in the following order:

1. First you need to start the saw and let its engine warm up;
2. Next, screw L will need to be turned until the highest engine speed is reached in idle mode;
3. Once maximum speed is reached, screw L will need to be turned 1/4 turn in the opposite direction. If during this the saw chain begins to rotate, then screw T should be turned counterclockwise until the chain stops completely:
4. Adjustment of screw H is carried out at a 10-second interval of engine operation at maximum speed. In this case, the screw should be gradually turned 1/4 turn in the direction of the clock hand. If during this the saw motor does not reach maximum speed, then the screw will need to be turned again 1/4 turn. Too low revolutions will be accompanied by a loud squealing of the tool, and too high – an increase in the amount of exhaust gases;
5. To adjust screw T, turn it clockwise until the chain begins to rotate. Immediately after this, the screw must be turned in the opposite direction until the chain stops.

Video on the topic

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Today, it is probably difficult to find an owner who does not have such a universal, practical, and multifunctional tool as a chainsaw. This device is deeply rooted in everyday life, and this is not surprising because the chainsaw has become for us simply an indispensable assistant in the field of cutting wood of various types, preparing firewood for the winter, cutting down trees, and it is also used in the construction industry, etc. Naturally, about its positive You can talk endlessly on both sides and she copes with her task simply superbly . But, like any equipment, no matter how unique and highly practical it is, over time it breaks down and stops starting, and this is normal. The most important thing at this moment is to correctly determine the cause of the malfunction and quickly eliminate it.

Naturally, you can turn to various kinds of services that, for a fee, will put your equipment in order. But you will have to pay a significant cost. What for? After all, you can try to determine the extent and cause of the breakdown yourself and fix it.

Since there are such minor breakdowns that can be repaired within five minutes. We will talk about them and ways to eliminate them in this article.

Malfunctions of the Husqvarna 142 chainsaw and their elimination

There are a number of typical breakdowns that owners of the Husqvarna 142 chainsaw most often encounter. To be able to repair them yourself, you will need to understand the symptoms of the problem and find the faulty part.

What to do if the Husqvarna 142 chainsaw does not start?

The most common cause of this problem is the spark plug. If the saw does not start either cold or hot, then you need to carefully inspect the spark plug.

If the spark plug is completely dry, it means that fuel is not entering the cylinder. In this case, you need to inspect the fuel pipes through which fuel should circulate. Faulty hoses will need to be replaced and the engine cylinder will need to be cleaned of carbon deposits.

If carbon deposits and a large amount of fuel are found on the spark plug, it means that the part is flooded with fuel during startup. To fix the problem, you will need to unscrew the spark plug, clean and dry it. The entire internal space under the part also needs to be blown with compressed air from a cylinder and wiped with a towel.

After completing the steps, the Husqvarna 142 chainsaw will start the first or second time. To prevent such problems from occurring, you should use only high-quality gasoline and oil to refuel the tool.

Chainsaw starts and stalls - repair methods

If the Husqvarna 142 starts up and immediately stalls, then the main reason for this lies in the wear of the rings, which leads to loss of compression. If the engine starts and stalls during a cold start, you should check the muffler, as well as the contact between the high-voltage wire and the spark plugs.

To fix the problem, you will need to disassemble the saw and inspect the piston rings. If necessary, they must be replaced. It will not be superfluous to clean the cylinder walls of fuel residues.

If the rings are in good condition, then you need to inspect the contact between the spark plugs and the chainsaw wire. You also need to clean, remove the muffler and inspect its walls. As a result of prolonged use of the tool, a thick layer of carbon deposits accumulates on the walls of the muffler. In this case, you will need to blow out the element with compressed air from a cylinder.

After completing all of the above procedures, you need to assemble the tool and start it. Before using the saw, you need to give it a few minutes to warm up the engine. You can then continue to operate the tool in normal mode.

The Husqvarna 142 chainsaw is used for work in the garden and at the dacha; it is an excellent option both for felling trees and for collecting firewood. The Husqvarna 142 chainsaw has technical characteristics that provide maximum performance and safety. The engine speed reaches nine thousand units per minute. The cylinder size is nominally 40.2 cm³. The fuel tank capacity is 410 ml and the oil tank is 200 ml. It is worth considering that the noise level is 118 dB. The mass of the unit is 4.6 kilograms. The length of the tire is from 33 to 38 centimeters, the chain pitch is 0.83 centimeters.

The lawn mower stalls when you press the gas, how to fix the problem

Reasons why a lawn mower stalls

– there can be a huge number, we offer the most common of them, and we hope that you will find yours and, of course, eliminate it. So, one of the situations is a clogged air damper, the hole behind which fuel is sprayed. If something gets into it, it can most often be quickly and easily removed. This is the simplest reason, just like a clogged filter. It needs to be washed in a solvent and then blown well with compressed air. If it cannot be repaired, then order a new one in spare parts from the KosiKosa store.

Likewise, when you press the gas, the tool stalls because the drive is clogged. The following option is also possible: fuel is not supplied in full, so you need to check or replace the fuel filter. Other possible reasons for a lawn mower stalling when you give it gas include:

1. The crankshaft seals suck in air;
2. The spacer that is located between the carburetor and the cylinder in a “problematic” situation;

To all these reasons why the mechanism stalls when adding gas, we will add some useful recommendations for handling the lawn mower. First of all, before starting to work with any equipment, you need to read the instructions. In this case, the consistency of gasoline and oil plays an important role, it is properly prepared by you, as well as not overheating the unit, and not leaving gasoline for the winter when you simply will not use the car.

In the full operation of any instrument, the coordinated work of all its components plays an important role. And if in one it is, then in the other it is a piston or a carburetor. Owners of brush cutters who want to use their tools to their full potential need to understand that under a load for which the machine’s capabilities are not designed, the entire mechanism or its individual parts may simply break. Therefore, only competent and moderate operation presupposes long-term effective operation of any gas-powered tool.

The trimmer stalls at idle - causes and solutions

Common situations why the trimmer stalls

or brushcutter, it is worth considering its operation at idle speed. Let's get straight to the reasons:

heating of the gearbox and a decrease in speed on the drum as a result of the fact that the gasoline solution is not prepared quite correctly. The required proportion is 1:4; carburetor contamination; the throttle valve is clogged; when the damper is opened (if such an experiment was carried out), the air flow makes the mixture “lean”; carburetor adjustment; air filter clogged;

An insufficient amount of fuel, which is needed for the operation of a gas-powered tool, will lead to a situation where at high speeds, when increasing, the trimmer works, but stalls at idle. In a situation with a carburetor, the device will stall on a cold start and on a hot start.

For any user of a lawn mower - professional or amateur - it is important to understand that any problem with the tool may depend on a minor part coming off, a fastener coming loose or clogging, as well as a global breakdown of an important part of the mechanism

A beginner and an experienced owner can encounter the problem of a stalled lawn mower; situations arise with used and completely new mowers, and we will look into which ones exactly in this article. So, the tool may stall under load, immediately after starting, that is, it starts and stalls when the entire mechanism heats up, at high speeds, or it does not even pick up speed and stalls. In all these cases, in fact, the same systems, elements, components are involved, but the breakdown or malfunction of each of them, more precisely, the nuances, cause the individual situation mentioned above. The answer to the question of every user: why does the lawn mower stall?

, you will receive only on our website in the news articles section.

To fully understand your individual situation, carefully read the signs and accompanying nuances when the scythe stalls, and then it will be easier for you to find a way out and quickly solve the problem. If you need certain ones, then you can do it wholesale and inexpensively at the best gas powered tools store in Ukraine, “Benzo Zip”.

Advantages of the model

• The relatively light weight of the Husqvarna 142 chainsaw and the ergonomic design, combined with the curved front handle, make the operation of the equipment as comfortable as possible.
• The anti-vibration system allows you not to feel tired for a long time.
• A guard and chain brake are provided to ensure user safety.
• The power of the Husqvarna 142 chainsaw is increased through a forged crankshaft consisting of three sections.

Restoring the operation of the tool

To restore the operation of the saw, no matter the Ural or Shtil brand, you need to know the location of the breakdown.

First, we check and change the unsuitable fuel mixture. If the saw still does not start, then we check further point by point.

The problem is in the candle - we pull it out and dry it. Under no circumstances should you pierce it, as this will lead to a malfunction of the part. Thirty minutes after drying, you can insert the spark plug back, first checking to see if there is any fuel left in its place.

In addition, the spark plug may simply break, so it is better to have a spare one to rule out the cause.

Engine

Engine breakdown is one of the most common and time-consuming. This problem is manifested by the following factors:

• Unstable operation at idle.
• Does not start.
• There is not enough power, or the Husqvarna 142 chainsaw starts and stalls as soon as it starts to pick up speed.

Before you begin repairing the Husqvarna 142 chainsaw, it is recommended to conduct a complete diagnosis of the equipment to accurately determine the causes of the problems.

To sum it up...

Equipment breakdown is undoubtedly a very unpleasant and upsetting incident for its owner. But don’t despair ahead of time, because if your chainsaw needs to be repaired, it’s just a matter of time. In this article, you were able to familiarize yourself with the most common problems regarding chainsaw malfunctions, as well as options for eliminating them at home.

The most important thing is that if you want your tool to always be in working order, and there are no problems with its operation, just keep an eye on the equipment . Often look directly into its “inner” area. Maybe some part will wear out soon, maybe something needs to be cleaned, etc. Read how to sharpen a chain with your own hands

In fact, this kind of manipulation is not complicated and can be done periodically. But this is a “plus” for you, first of all, since a breakdown will not catch you at the most inopportune moment, when you need to do a huge amount of work and you will not have to waste time solving problems associated with the breakdown.

We also recommend that you familiarize yourself with the Swiss company that produces Husqvarna chainsaws.

If you still haven't found what you need after viewing these articles. then we suggest looking at the article “chainsaw friendship technical characteristics”.

Amateur and professional chainsaws are complex devices. The motor life of their two-stroke engines, components and assemblies has its limitations. For this reason, quite reliable and expensive tools, along with cheap Chinese units, periodically fail and refuse to start. The situation when a chainsaw does not start or stalls is not very pleasant and sometimes confuses the user. How to identify and eliminate the malfunction, restoring the functionality of the tool.

The reason why the Husqvarna 142 chainsaw does not start

If the Husqvarna 142 chainsaw does not start, there may be several reasons. The most common ones include the following:

• Damage to spark plugs - to understand whether a spark plug is working properly, you need to unscrew it and inspect it. If the porcelain insulator has cracked, you see a burnt or damaged electrode, you should immediately replace the spark plug. In addition, after working for several seasons, the Husqvarna 142 chainsaw requires inspection of spare parts. Spark plugs also wear out their lifespan, and to ensure the safety of the saw, replace them with new ones.
• Carburetor clogged - during operation, gradually, fuel vapors settle on the internal walls, forming a sticky consistency that can clog the carburetor, preventing the engine from starting. You will need to clean it with a special detergent. When repairing a Husqvarna 142 chainsaw, carburetor adjustment is always carried out with a warm engine and cleaned systems.
• Malfunction of the ignition coil - before you decide to replace this part, make sure that the spark plugs meet the required technical condition.

Break-in rules

Running in a chainsaw does not last long at XX. Therefore, after starting the engine, you need to idle for about 5 minutes, then start sawing trees with a diameter of no more than 10 cm at medium speed.

The technological process is carried out according to a cyclic scheme:

• 1.5 minutes with minimum load;
• 20 seconds on XX without it.

After operating for the first 25 hours, the unit can reach full power; all rubbing parts are worn in.

During this period, be sure to adhere to the following recommendations:

• do not overheat the power plant;
• do not work for a long time at XX;
• do not load as much as possible;
• suppress long-term slipping of the clutch.

After final running-in, the following work is carried out:

• inspection of the crank mechanism;
• cleaning carbon deposits on all parts;
• checking fasteners;
• assembly;
• preparation of a flammable mixture;
• adjusting the carburetor to maximum power under load.

The saw chain also needs running in

Attention is paid to its lubrication and tension. The part is tensioned so that it can be rotated freely by hand

Lubrication is carried out by immersion in oil. Then the chain is run at idle for 3-5 minutes. The engine is stopped, the chain cools down and only then the tension is checked.

This video discusses the breakdown of the ignition coil, its replacement and starting the chainsaw

. And also look at mine.

How to adjust the carburetor of a Husqvarna 142 chainsaw

The carburetor adjustment of the Husqvarna 142 chainsaw should be done when the engine is warm. Pay attention to the condition of the air filter, which will need to be cleaned if necessary and make sure it is not clogged. Adjusting the carburetor of the Husqvarna 142 chainsaw with your own hands is done using three screws:

• L – for low engine speeds.
• H – for high engine speeds.
• T – for idle speed.

Turn the low and high speed control screws clockwise to the limit, and after the peak is reached, turn them in the opposite direction, one and a half turns. When idling, the Husqvarna 142 chainsaw chain must be stationary. Check at maximum speed.

You can avoid most malfunctions and costly repairs by following the manufacturer’s instructions and recommendations, as well as using original spare parts for the Husqvarna 142 chainsaw.

Actions if a malfunction is detected in various parts of the unit

Such unpleasant phenomena as loss of power, lack of connection, and idle support are common. The reasons for this behavior of the tool are malfunctions of the chainsaw carburetor. This is expressed in contamination with particles of dust and sawdust. Such a breakdown can be easily repaired on its own.

The carburetor is cleaned using:

• a small amount of gasoline;
• Phillips screwdriver;
• brushes;
• heads, size 8.

To begin repairing the carburetor, they begin by cleaning it from dirt and dust particles and small wood. A brush is used for this. When the surface is completely free of debris, the repairman removes the cover, and then the filter.

The air collector is released after unscrewing the air filter mounts. The user now has access to the accelerator and rods. The accelerator lever is removed as soon as the throttle is lowered by pressing down with your finger.

The carburetor moves away from its seat after the choke lever is removed and closed. Then the wire is removed and pulled towards itself to stop the engine. The plastic lever, which is the place where the wire is attached, is photographed.

It is raised from the left. As a result, the carburetor is freed, which makes it possible to pull it out and clean it. For these purposes, it is convenient to use a compressor. In its absence, the parts are washed in clean gasoline.

Disassembling a Stihl chainsaw – video

Important! When repairing a poorly functioning Stil MS 180, be sure to inspect the condition of the fuel filter. Remove it and blow out the fuel hose

The saw carburetor assembly process is carried out in reverse order. If, after this process, smoke appears from the muffler and the saw engine does not start well, then you need to make sure that there is a spring located under the lever needle.

The spring cuts off the fuel supply. In its absence, a spontaneous “overflow” of fuel into the spark plug occurs.

It is important to ensure that the spring is installed in its place and make sure that the spark plug is working

If a candle is filled with gasoline, it should be dried. To do this, the part is unscrewed and the excess fuel that gets inside is drained through the existing hole. The candle takes more than half an hour to dry. Then it is installed in place, and the chainsaw is brought into working condition.

Insufficient contact between the high-voltage wire and the end of the spark plug can also be one of the reasons for tool failure. Repair of stihl chainsaw parts can be done by replacing problematic parts.

For example, if a spark plug fails, it is replaced with a reliable one. Chains, sprockets, and tires are subject to rapid wear. They solve anti-vibration problems in the chainsaw device, so they are replaced urgently. It is recommended to keep such spare parts in stock.

Muffler failure

If at low speeds the saw engine runs without interruptions , and when they increase, it stalls, then the problem is related to the muffler.
This indicates a faulty spark arrester. Most likely, it is clogged with combustion waste. To perform cleaning, the first step is to remove and disassemble the muffler. Next, the user carefully removes the resulting carbon deposits using detergent. After this, experts recommend drying the part with a hairdryer. After completing all the manipulations, you can install the muffler in its original place.

saw has a simple design , so a large number of faults can be fixed at home. To do this, you should carefully study the breakdown and read the instructions. There are rules for disassembling and installing parts. The Husqvarna 137 saw is distinguished by its reliability and sufficient power. She copes with even the most complex tasks and performs a large amount of work. That is why the presented chainsaw is widely used in large-scale industrial enterprises.