Malfunctions of the Husqvarna 142 chainsaw

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.

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.

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When your chainsaw doesn’t start, even though you’re doing everything right, it’s puzzling.

However, do not rush to take it for repairs - the reason may not be that serious and it is possible that you can completely cope with the alleged malfunction with your own hands.

You can find a solution to why the chainsaw is difficult to start when hot, in the instructions.

If for some reason you don’t have it, then we will talk about the structure of the device and possible problems in the first part.

If you do everything correctly, according to the instructions, but the chainsaw still does not start or stalls, then the second section will help you, where you will learn about the most common solutions to this problem.

The most popular and frequently used chainsaw models by Russian users are the Ural, Husqvarna, Shtil 180 and Partner.

Although they have their own characteristics, they are generally similar, so we will describe possible causes of breakdowns and ways to eliminate them in general for all tools.

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.

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.

The Husqvarna 142 gasoline saw is known to many users for its reliability, ease of operation, as well as the high quality of branded components and factory assembly. Garden tools in this modification quickly and efficiently cut down any wood, regardless of its condition and structure. This allows the model to be used not only for cleaning the garden, but also for the construction of domestic and utility premises.

Operational Features

When operating the Husqvarna 142 chainsaw, you need to take into account its features. This is a simplified semi-professional model, not intended for everyday long-term use. The main area of application of the Husqvarna chainsaw is gardening and housing and communal services - pruning large branches, felling dried trees, etc.

The power plant is a two-stroke carburetor engine with a displacement of 40 cm 3 and a power of 2.58 liters. s., air-cooled. It runs on a gasoline-oil mixture in a gasoline to oil ratio of 50:1.

During operation, Husqvarna branded oil is required, but if this is not available, the manufacturer allows the use of any high-quality engine oil, but in a different ratio - 33:1.

The Husqvarna chainsaw has a minimum of controls - there is only a switch, a choke position lever and a combined throttle control lever. This model does not have a primer, i.e. a fuel suction button, which makes starting difficult, but makes troubleshooting easier.

A special feature of the Husqvarna chainsaw is its recommended operating mode - at high rather than low speeds.

Performance qualities allow you to saw dry and wet wood of various species, including hard ones such as oak and beech. In general, the Husqvarna 142 chainsaw is characterized by high build quality, unpretentiousness and reliability. Malfunctions occur rarely and are mainly associated with incorrect carburetor adjustment or failure of consumables.

The device of the Husqvarna 142 chainsaw

One of the main advantages of the 142nd model of the Swedish brand Husqvarna is the competent selection of its components and the high quality of the original assembly. The basis of the garden tool consists of a 2-stroke gasoline engine, the chrome-plated cylinder of which has a volume of 30 cm3. Starting a standard internal combustion engine is done by pulling the recoil starter cable. A proprietary Japanese Walbro brand carburetor with forged jets and an improved fuel injection system is responsible for preparing and enriching the fuel mixture with air in the internal combustion engine configuration. The manufacturer equipped the engine with a fuel and oil tank with a volume of 370 and 190 ml, respectively.

The Husqvarna 142 chainsaw is equipped with a durable clutch, which is responsible for the continuous connection of the engine with the saw set. All spare parts of the mechanism are made of durable steel, resistant to high temperatures and corrosion.

Model specifications

The Husqvarna brand chainsaw in the proprietary 142 modification has solid factory parameters.

These include:

petrol engine power – 2.58 liters. s./1.9 kW;
idle/maximum speed – 3000/13000 rpm;
The manufacturer's recommended length of the tire used is 30–38 cm;
weight with filled fuel and oil tanks – 4.9 kg.

Despite the impressive maximum speed parameters, the engine of the Husqvarna model is quite quiet. When operating the model under maximum loads, the sound impact level on the operator is 105 dB.

When and why to adjust

The procedure for adjusting the carburetor is usually carried out quite rarely. The highest quality and best option is factory settings. But if necessary, it can be done by adjusting the corresponding screws. A carburetor in a chainsaw is necessary to prepare an air-gasoline mixture, which must have a certain ratio of ingredients. If the balance is not maintained, then malfunctions will begin to occur in the engine.

A mixture that does not meet specifications may be oversaturated or lean. In the first case, the amount of fuel relative to air is increased, in the second there is more air than needed, and less fuel. The article will discuss carburetor adjustment using the Husqvarna 142 chainsaw as an example.

Chainsaw delivery set

When ordering the Husqvarna 142 model, the buyer receives absolutely everything necessary to start using and further maintain the garden tool. The model kit includes:

branded tire and chain;
plastic tire cover;
hand tools for assembly and maintenance;
user manual.

For an additional fee, the manufacturer supplies the chainsaw with a bag for transportation, branded oil for 2-stroke engines and additional spark plugs.

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

In order for the 142nd model of the Husqvarna brand to work properly, its owner must promptly adjust the chainsaw carburetor.

This should be done in the following cases:

if the Husqvarna 142 chainsaw does not start;
if the engine starts but runs intermittently;
if the engine starts and stalls when you press the gas trigger;
if fuel consumption increases sharply.

All these malfunctions threaten more serious breakdowns, which will be quite difficult to cope with on your own and without the necessary experience. To prevent this, you need to adjust the element responsible for enriching the fuel mixture with air. Setting up the carburetor of the Husqvarna 142 chainsaw should be done in the following sequence:

First you need to set the Husqvarna chainsaw carburetor to factory settings. To do this, with a cold engine, you need to turn the adjusting screws as indicated in the model’s operating manual;
After this, you need to start the saw motor and give it 5 minutes to warm up completely. After this, you need to slowly turn the screw “L” until the engine starts to operate at maximum idle speed. Immediately after this, screw “L” must be turned out 1/4 turn in the opposite direction;
If the chain on the bar then rotates, the operator will need to begin turning the "T" bolt one at a time until the chain stops;
Next you need to find the maximum engine speed. To do this, you need to hold the gas trigger and start turning the “H” bolt until the engine begins to operate stably at high speeds. After this, screw “H” must be turned out 1/4 turn in the opposite direction.

After adjusting the carburetor, you need to turn off the Husqvarna chainsaw engine and start it again. To check engine operation, the operator must press the throttle trigger sharply several times. If, when the trigger is pressed, the engine quickly gains speed and loses it when the trigger is released, then the adjustment of the standard carburetor was carried out successfully by the operator.

Chain

According to experts, the Husqvarna H30 chain is ideal for this model of chainsaws, which is characterized by a pitch length of 8.25 mm, a thickness of 1.3 mm and provides 64 links. During operation, it moves at a speed of 16.3 m/s.

During the operation of a chainsaw, questions may arise regarding chain sharpening, chain tension, problems with starting, and chain sharpening machines.

For better performance of the tool, the manufacturer advises having the chain sharpened by specialists. But you can determine the level of its tension yourself. Its adjustment is carried out using a screwdriver. To do this, turn the adjusting screw to the right or left a quarter turn.

Chainsaw malfunctions and how to fix them

Owners of the Husqvarna 142 model often encounter typical breakdowns caused by improper use of garden tools or simple wear of its parts.

These malfunctions include:

the chainsaw does not start - the cause of this breakdown lies in the spark plug being flooded. To be able to start the saw motor, you need to remove, wash and dry the spark plug. After this, you need to blow out the cylinder by sharply pulling the starter cable several times with the spark plug turned out. After this, you need to screw in the spark plug and start the engine of the garden tool;
increased vibration during operation of the saw - repair of this breakdown is carried out by cleaning or replacing the muffler. You will also need to inspect the springs of the anti-vibration system. If necessary, sagging parts must be replaced;
shooting sounds - if loud popping noises are heard during operation of the Husqvarna model, then the causes of the breakdown should be sought in the carburetor or muffler. The operator will first need to adjust the carburetor. After this, you need to remove and wash the muffler;
leakage of oil to lubricate the chain - to eliminate this breakdown, you need to check the condition of the oil pump and pipes. The faulty part will need to be replaced.

To avoid further breakdowns of the Husqvarna 142 chainsaw, you need to use high-quality gasoline and oil to refuel it. This will help prevent increased wear of parts and protect model components from overheating.

Types of clutch failures

The types of faults do not depend on the chainsaw model, since the structure and principle of operation of the clutch is the same on almost all modern power units. Chainsaw operators know that a minor problem with this unit requires immediate action. Breakdowns are inevitable, since the clutch collides with less intensive use of the tool with a heavy load. Often problems are related to:

wear of the assembly as a whole (the spring may burst or the mechanism may begin to slip);
spring damage (the chain will rotate, the engine will work, but is unstable);
chips have formed on the clutch cam due to heavy load or overheating (just listen to the unit while it is operating; extraneous noise indicates a malfunction).

Whatever the reason for poor performance of the clutch and related components, you will need to remove the clutch to repair it.

Please note that repair work does not always give the desired result, so sometimes you need to replace the clutch on a chainsaw. All of the above manipulations can be “performed” independently, without turning to service center specialists for help.

How to remove the clutch on a chainsaw?

It is not necessary to review the instructions for this type of work for a particular model, because all use one universal one, which allows dismantling this unit on modern gas-powered tools.

If there are any distinctive nuances, they relate to individual clutch parts. For example, some brands create one spring with two sections in the design of this assembly, which must be taken into account when completely replacing this component (it must be replaced when the spring is damaged, due to which the chain will rotate and the engine will exhibit unstable operation).