Chainsaw husqvarna 137 DIY repair

Today, almost every owner of a private house or an advanced summer resident uses a chainsaw, which is highly mobile, unpretentious in operation and repair. Among the many models of gasoline vehicles and equipment on the market, the Swedish brand Husqvarna is worth highlighting. Founded 400 years ago, the Husqvarna company first produced weapons, and in 1959, in connection with the need to expand the line of products, launched the production of chainsaws. Unlike competitors, this manufacturer sought to improve the layout of the saw. To reduce the level of noise emitted by the engine, the famous designer from Sweden Sixten Sazon used a muffler in the Husqvarna chainsaw using the example of a motorcycle.

Almost all professional and amateur chainsaws are equipped with air-cooled two-stroke gasoline engines.

Chainsaw Husqvarna: main components

This assumes the presence of at least one cylinder with heat sink fins. The fuel supply system (carburetor) acts as a gasoline-air mixer. Dirt, dust, shavings should not enter the working combustion chamber together with the fuel mixture, and filters are installed on the saws to clean the supplied air. Manufacturers recommend changing the filter once a season. In the interval between replacements with a frequency of once for 10-15 fillings, it must be cleaned.

For convenience and ease of starting the internal combustion engine in any chainsaw, a starter is provided, which is a reel with a wound cable and a handle. Even the most powerful husqvarna chainsaw is equipped with an intelligent starting mechanism.

In order to reduce the vibration transmitted to the hands of the feller, a special device is installed on the tool. In addition, this mechanism prevents the tire from "pulling" when cutting wood.

Despite the fact that ideal chainsaws have not been created and it is unlikely that anyone will succeed, this Swedish company strives for design perfection and increasing the power of its models. The entire husqvarna range of saws are characterized by pleasant enhancements that make their owner's job much easier.

General view of husqvarna chainsaw

These positive options include:

• use of the fuel "suction" button (primer) for the convenience of starting the internal combustion engine;
• automatic adjustment of the carburetor by the Auto Tune system;
• side chain tensioning mechanism;
• environmentally friendly and powerful X-Torg engine;
• vibration reduction system;
• a mechanism for forced lubrication of the chain through a hole in the driven sprocket;
• centrifugal air purification Air Injection, which makes it possible to change the filter less often;
• universal key for service and repair.

In order to avoid the acquisition of fake Husqvarna chainsaws, it must be remembered that their licensed production is established exclusively in Sweden, USA, Russia, Brazil.

Regardless of the power, performance and size of the models, their problems are divided into 2 types:

1. Malfunctions of the engine, fuel supply system, cylinder-piston group, muffler;
2. Transmission breakdowns (malfunctions of the brake system, tire, chain, clutch, etc.).

Based on many years of experience, most experts say with confidence that mainly the causes of breakdowns lie in the operation of the internal combustion engine. The striking manifestations of the incorrect operation of the chainsaw motor include:

• difficult start;
• unstable idling;
• does not develop full power;
• extraneous sounds are heard during operation.

In order to reduce the complexity of diagnostics and subsequent repair of the Husqvarna chainsaw with their own hands, experts advise starting with simpler units and parts for maintainability.

The first step in ignition diagnostics is to check the spark plug. It must be unscrewed from the cylinder shaft with a special wrench or socket head. The gap between the side and center electrodes should vary from 0.7 to 1.5 mm.

Husqvarna chainsaw malfunctions

If this distance is exceeded, there will be a periodic absence of a spark. On the contrary, if the gap is too small, the discharge will not be sufficient for full ignition of the fuel mixture. You can set the recommended gap parameters using locksmith probes, which you can buy at any car store.

If there are traces of gasoline on the surface of the candle, then most likely it does not completely burn out. It is not necessary to look for the causes of malfunctions in the Husqvarna ignition system in the absence of moisture on the plug, since in this case it is necessary to adjust the fuel system, the steps of which are described below.

The most common types of ignition failures include improper clearance (more or less 0.2 mm) between the flywheel and the ignition coil. It can also be set independently by means of the probes.

The fuel supply system is one of the most difficult in the unit, and therefore it is worth taking it as seriously as possible and following certain rules. Gasoline may not flow to the carburetor for the following reasons:

- clogged breather (holes in the tank lid);

- the fuel filter is clogged with dirt.

To clean the breather, you need to prepare a regular sewing needle. In the second case, it will be necessary to dismantle the tank and replace the fuel filter.

Carburetor with adjusting screws

The entire range of the Swedish manufacturer is equipped with traditional carburetors with three adjustment screws:

1. Screw "T" - setting the mixture supply at idle;
2. Screw "L" - low speed adjustment;
3. Screw "H" - at maximum speed.

First of all, it is necessary to "find" the highest speed with the screw L in the absence of load (at idle speed). Then turn it counterclockwise by a quarter of a turn.

If, in this position, the chain on the bar continues to move, you need to achieve a stop by means of screw T.

Husqvarna chainsaw carburetor

To adjust the Husqvarna carburetor at maximum speed, after pressing the accelerator key for full, wait 10-15 seconds. Turn the screw "H" clockwise ¼ turn and listen to the operation of the internal combustion engine. If during engine operation there is an extraneous ringing "squeal", gradually unscrew the bolt until it disappears. On the contrary, in case of excessive smoke production, it is required to lean the mixture, gradually tightening the screw.

After setting the minimum and maximum revolutions, we adjust the saw idle. To do this, turn the screw "T" clockwise until the chain starts moving along the bus.

Correct tuning of the fuel delivery system requires a tachometer (a device for measuring revolutions per minute), as well as the experience of the owner.

The ICE starting system is used to turn the shaft and, as a result, the appearance of a spark and ignition of the fuel mixture. Like most models, Husqvarna's kick starter consists of:

Chainsaw starter Husqvarna

When the starter jerks, the drum ratchet engages with the engine shaft, as a result of which the crankshaft will rotate. Despite the condition of the tool, starting the engine the first time is quite problematic. To facilitate the start, it is required to make several presses of the primer (the button for pumping the mixture). A backup spring can be provided in the design of the starter, which, after being compressed by the main one, gives a sharp push to the shaft.As such, the repair of the starter is not provided, and if one of the elements breaks down, it will need to be replaced.

The cutting saw chain of this manufacturer consists of working teeth, depth stops, locking pins. The most loaded in the sawing process are the cutting links made of high-alloy structural steel. By design, they are divided into left and right-handed. The cutting width is determined by the distance from the side edges of the left and right links.

DIY husqvarna chain tensioning

The main characteristic of the husqvarna chainsaw chain is the pitch, which can be measured from the first to the third rivet by dividing the result by two. Due to the fact that the inch is adopted in the Western system of calculation, manufacturers in their passports indicate the step in inches (25.4 mm) with the instrument. Medium chainsaws use 3/8 '' chains, and heavier weighted chains use 4.

One of the most important indicators of the chain is the thickness of the shank, which for most models is 1.3 mm. They are often used on specialized and general amateur instruments. The thickness of the links must be matched to the groove in the bar, as excessive thickness can lead to chain breakage or fall.

When the chain is relaxed, it must be tightened by means of the mechanism located on the side of the unit. Having previously removed the left side cover (2 bolts), weaken the tire for the husqvarna chainsaw. Next, we unscrew the longitudinally tightened bolt, thereby moving the guide away from the power unit. When properly adjusted, the chain should roll easily but not dangle on the bar.

An important protective unit in a chainsaw is certainly the chain brake, which, in the event of a kickback, blocks the rotation of the cutting edges. As a result of the tire rebound in the direction of the feller and, as a consequence, his possible injury, the friction mechanism disengages the drive sprocket and the drive shaft.

Husqvarna Chainsaw Chain Bar Slip

The brake start can be of contact or inertia design. In the first case, the protection will be triggered as a result of the return throw of the unit. The inertial brake system is the generation of large inertial forces acting on the drive shaft. Regardless of the features of a particular design, experts recommend purchasing chainsaws equipped with similar mechanisms.

After the repair and adjustment of the Husqvarna chainsaw, it is required first of all to check the performance of the brake assembly.

In all models of chainsaws presented, oil is supplied to the tire automatically.

The main components of the husqvarna chain lubrication system

Before starting work, you need to make sure that there is a lubricant in the reservoir. The oil pump interacts with the drive sprocket, and as the shaft rotates, the gear delivers lubricant to the running surface of the chain. Due to the constant presence of oil on the cutting edges, the chain is less prone to friction and, as a result, loses its properties noticeably more slowly. If the lubrication mechanism fails, the husqvarna saw will have a fine brown chain. Periodically, the left protective cover of the unit must be removed and the oil hole cleaned with compressed air or a needle. The delivery rate of the pumping unit directly depends on the number of revolutions of the tool.

The chainsaw has become an indispensable and important tool in the daily life of every owner. The popularity of this tool has grown from the very beginning of its inception, since with its functionality, to a large extent, it made the life of every forester, gardener and simply ...

How to choose a chainsaw is not an easy question, the range of products is simply huge, so many people have difficulties when buying this product. After all, you want not only to buy a chainsaw for yourself, but also to profitably invest your money, and buy a really reliable and practical thing.If you decide to acquire this kind of equipment, and do not know what to look for in the first place when buying, then this article is for you.

Here you can find answers to your questions regarding the technical characteristics of one of the most popular models among chainsaws - Husqvarna 137. This "amateur" version of the chainsaw, more professional is the shtil chainsaw.

Husqvarna is a company that has been making high quality garden tools and equipment for many years, and its products are perfect for industrial large-scale construction.

The range of the manufacturer is huge, but the main focus of the company is the production of chainsaws.

In creating their "masterpieces", the manufacturer primarily strives for quality, and also pays great attention to innovations related to the production of this kind of technology.

It is this feature that inspires great confidence among buyers.

Such a model has a significant advantage, namely, low weight, which contributes to more convenient operation, and it is also quite economical, since the manufacturer has equipped it with a (two-stroke) engine that has a small volume. But despite this kind of functionality, the Husqvarna chainsaw is powerful enough. One of the most successful models is the Husqvarna 137 saw.

As for the characteristics of the chainsaw, then its weight is about 4.6 kilograms, despite the fact that this is the "clean" weight of the tool, without the presence of oil, fuel and tires with a chain. Of course, in full gear the chainsaw will weigh much more, but the indisputable advantage can be considered the fact that thanks to the long tire, which has 38 centimeters, operation becomes easier. It is this feature that makes it possible to make deeper cuts.

The chainsaw of this manufacturer has a very solid power, which is about 1.6 kW, which contributes to a significant increase in the level of vibration waves, and this is a significant disadvantage in working with this tool. Of course, the manufacturer, when creating his products, thought about how to reduce this kind of vibration and supplemented the technique with the so-called anti-vibration mechanism.

If we talk about revolutions, then in the operating mode their number is 13,000, and in running condition - 3,000.

The tool is controlled using a double-lever design with a built-in starter, which, in truth, is quite inconvenient, since it is difficult to get to certain parts due to its location during servicing. Choosing an inexpensive chainsaw for your home is not an easy task. If you decide to opt for this model, then you will have to pay a rather large sum for such a chainsaw, since it is one of the most expensive in the range of products manufactured by this manufacturer. You can get acquainted with the prices for chainsaws made in Russia here.

If you have finally made your dream come true and acquired such an irreplaceable assistant as the Husqvarna 137 chainsaw for your household, then it's time to get acquainted with all possible breakdowns and methods of their elimination. After all, as they say, you need to be ready for everything and a breakdown can take place at the most inopportune moment.

Today there are a huge number of workshops that repair this kind of equipment, but it takes time to get your chainsaw serviceable, and besides you will have to pay a certain amount for the service.

But, you must admit that it is much more economical and easier to repair the Husqvarna 137 chainsaw with your own hands. In fact, if the breakdown is not significant, then there is no point in spending money, but you can easily fix the breakdown.And so that in such cases you at least have an idea of ​​what is with your instrument and how to make "first aid" below we will provide all the most common malfunctions and instructions for repairing Husqvarna 137.

In this video you can see the disassembly instructions:

If you are faced with a malfunction of the chainsaw, then the first thing to do is check the spark plug. But this must be done very carefully, by first disconnecting the wire by means of a special hook. The most important thing that you should pay attention to is the direct appearance of the candle.

A dry surface indicates that fuel has stopped flowing into the cylinder, therefore, the problem is not with the spark plug, so it must be screwed back.

But if spark plug covered with fuel splashes, then this indicates that the problem is either in the carburetor, the adjustment of which was not made correctly, or the start rule has been violated.

In order to eliminate this kind of problem, it is necessary to thoroughly wipe the spark plug, turn off the fuel supply and turn on the starter. This is done in order to ventilate the combustion chamber and get rid of excess fuel. After that, the cleaned candle must be installed in place and the chainsaw must be started.

And the last thing that can happen to a candle is that it can be covered with carbon, which indicates that you are using poor quality oil, which is not acceptable if you want the tool to serve you for many years. Also, the reason for this may be an error in the calculation of oil and gasoline, and the incorrect process of adjusting the carburetor.

In this case, you must clean the candle by rinsing it and removing carbon deposits with an awl, then wipe the electrodes with a sandpaper and reinstall. In addition, it is important that the gap directly between the electrodes and the spark plug should not exceed 0.5 - 0.65 mm, otherwise a new gasket must be installed.

It is important to pay attention to whether a spark is present. For this kind of manipulation, you need to put the ignition cable directly on the spark plug, then connect the cylinder and the nut on the spark plug with pliers and start the starter.

After which sparks should appear, but if they are missing, then in this case there is a problem with the malfunction of the chainsaw in the spark plug, which must be replaced. But there are times when there is no spark even after replacement, this indicates that the high-voltage wire is faulty or the direct connection with the candle is broken.

There are situations when fuel does not enter the cylinder, this kind of malfunction can occur for the following reasons: firstly, a dirty filter (fuel). In order to clean it, you must first remove the hose (fuel), and then check how well the fuel flows. Since through this manipulation you can find out what is the cause of the breakdown.

Since if the jet is weak, then the reason is in the filter, that is, it needs to be cleaned. To do this, it must be obtained directly through the tank, namely through its fuel hole. Naturally, you can reduce the likelihood of contamination, but for this you need to carry out periodic preventive maintenance, namely, it is advisable to replace the old filter with a new one at least once every three months. Insufficient viscosity of the oil for the chainsaw chain can also cause a breakdown.

It can also take place in breakage clogging of a special hole, which is located on the fuel tank, namely on the lid. This kind of hole is called a breather. You can check whether it is working properly or not by disconnecting the hose, and then cleaning it with a needle. It is also worth noting that there are several reasons for the breakdown, one of which is contamination of the filter (air).

Consequently, the air does not enter the required amount directly into the carburetor, this leads to the fact that the process of motor work is disrupted. If you encounter a problem when the chainsaw stalls when you add gas, see the details here.

In order to clean the filter, it is necessary to rinse and clean it in clean water, but this must be done very carefully. After that, it is very important to dry it and install it in place. And also the cause of the breakdown may be incorrect adjustment of the carburetor, which must be done with three screws.

But remember that every manipulation must be carried out, using the instructions, since otherwise you can only aggravate the situation.

And the final cause of the breakdown is considered clogged channels or the integrity of the carburetor membrane is broken.

If your chainsaw starts and stalls, the reason for the video is here.

If you are faced with a situation where the engine works great directly at low speeds, and if the speed increases, it starts to stall, then the spark arrester is faulty.

The spark arrester in the muffler is most likely clogged with combustion debris.

In order to clean it, you must first remove the muffler, and then disassemble. It is worth remembering that there are also models that cannot be disassembled. After you got the muffler out of it need to be cleaned of carbon deposits, by means of detergents, after washing, be sure to dry it with a hairdryer, and after the manipulations are finally completed, you must install it in place.

Undoubtedly, the chainsaw occupies an important place in the daily life of each of us, especially when it becomes necessary to carry out certain work in the garden plots. Rating of chainsaws by quality See here.

And if you are going to purchase a chainsaw for yourself, then you will make the right choice and will not regret it for a second.

First of all, what I would like to draw your attention to, since this is the fact that this kind of tool will perfectly serve you for various kinds of manipulations related to wood sawing, wood harvesting and garden processing.

Malfunctions of the Husqvarna 137 chainsaw are not so rare, but the specificity of its device allows it to cope with most of them on its own! Find out how to choose a chainsaw video here.

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?

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.

1. 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.
2. 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 must 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 you need to adjust the supply of the fuel and oil mixture. For these purposes, rotate the screw L.

In order for the chainsaw to start anyway, even if the setting is incorrect, the factory positions of the H and L screws are applied. Most Husqvarna chainsaws can be started if both screws are unscrewed 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: