Tuning The Carburetor Husqvarna 137

Chainsaw chain Husqvarna 137

For this variant of the device, the Swedish manufacturer recommended the Husqvarna H30 chain with a drive link thickness of 1.3 mm. The manufacturer recommends sharpening it by a specialist. The degree of tension is determined visually. Its adjustment is carried out with a screwdriver with an adjusting screw in steps of ¼ turn to the right or left.

Chainsaw Husqvarna 137

Tuning The Carburetor Husqvarna 137

  • Chainsaw device Husqvarna 137
  • Carburetor Husqvarna 137
  • Chainsaw chain Husqvarna 137
  • Specifications Husqvarna 137
  • Adjusting the carburetor Husqvarna 137
  • Reviews of the Husqvarna 137 chainsaw

Chainsaw Husqvarna 137 (Husqvarna) refers to the amateur non-professional options. Low weight (4.6 kg without chain and bar) and engine power (1.6 kW) made it highly popular with consumers. There are 2 tire options available for this model, 13 "and 15". Their pitch is 0.325 ″ and the maximum end radius is 10T. With proper operation and timely maintenance, it will last for many years. During operation, the device emits a noise of 98-108 dB.

Carburetor Husqvarna 137

Carburetor manufacturer. Walbro. Device type. WT-660.

Adjusting the carburetor Husqvarna 137

In the correct operation of the Husqvarna 137 chainsaw, a high-quality carburetor setting, chain tension and sharpening are important. To adjust the carburetor, you need to turn the screw on it, which regulates the idle speed until it stops. Then counterclockwise you need to turn the screw 4.5 turns. In this position, the chain should not rotate when the engine is running. If this is not the case, you need to contact the service center. Each step of adjusting the screw should be no more than 1/16 of a turn and be accompanied by another test of operation.

Chainsaw device Husqvarna 137

When assembled on the Husqvarna 137 saw you can see:

  • Handles (front, rear and starter grip);
  • Covers (cylinder, clutch and starter);
  • Chain brake handle;
  • Tanks (for fuel and chain oil);
  • Levers (throttle, control and air damper locks);
  • Ignition switch;
  • Muffler;
  • A tire with its guide and end sprocket;
  • Chain with its tension screw;
  • Protective shield for the right hand.

Photo of a disassembled Husqvarna 137 chainsaw

There is a fuel and lubrication system inside the device, including a carburetor, and an ignition system.

Specifications Husqvarna 137

What is responsible for supplying a mixture of fuel and oil

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.

How to adjust the carburetor on a Husqvarna 137 chainsaw

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.?

What is the factory setting of the carburetor of a Husqvarna chainsaw?

To ensure that the chainsaw will 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 in order to achieve the desired fuel consumption and maximum efficiency. It is regulated by XX also after these manipulations.

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

What is responsible for the air supply

Two dampers are responsible for the air supply, 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 flap 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 non-return valve is used to spray fuel into the cylinders.

The principle of operation is simple: it limits 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 the car, the carburetor setting of the chainsaw 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.

Adjusting the carburetor of your Husqvarna chainsaw

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

Before starting work, make sure that the air filter is clean and that all other components are working correctly. The fuel supply to the float chamber should work without interruptions, and the ignition system is configured 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 a few 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 should not be set in motion without pressing 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 efficient and save the motor resource.
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How to repair a Husqvarna carburetor with your own hands?

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.

What is responsible for supplying a mixture of fuel and oil

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.

Adjusting the Carburetor of the Husqvarna Chainsaw 137

Description of the adjustment process for Husqvarna chainsaw carburettors. The main obstacles that can be solved with the option of the property and amount of fuel.

Modern chainsaws have a complex system and consist of several main units, which at times require maintenance and adjustment. In this article, we’ll talk about how to adjust the carburetor on a Husqvarna chainsaw.

Adjusting the carburetor of your Husqvarna chainsaw

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

Before starting work, make sure that the air filter is clean and that all other components are working correctly. The fuel supply to the float chamber should work without interruptions, and the ignition system is configured 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 a few 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 should not be set in motion without pressing 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 efficient and save the motor resource.

Chainsaw instruction manual

Chainsaw "Husqvarna 137", like other models of this brand, is equipped with an inertial automatic chain brake. This part was invented by the engineers at Husqvarna. Now most of the manufacturers still produce chainsaws with a contact brake. That is, the brake is applied when interacting with the hand during a kickback. In practice, such a contact brake may not work at all. Do not forget to take care of the engine, to find out how to dilute gasoline with chainsaw oil read this article.

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The auto-vibration system of this model works on the principle of "two masses". The manufacturer does not release other systems.

The Husqvarna 137 is equipped with a high profile professional chain (like the Stihl chainsaw). This is another difference from low-profile chainsaws. Chainsaws with a high profile chain are forty percent higher. This is especially striking with large volumes of work. In addition, these chainsaws remain highly efficient even when working with contaminated wood.

One of the most common mistakes when starting a Husqvarna 137 is closing the choke without turning on the ignition.

It turns out that the fuel mixture enters the cylinder. And there is no spark, no ignition occurs. After that, you will have to unscrew the candle, wipe it and screw it back in. Therefore, it is worth remembering that all Husqvarna chainsaws have a combined damper, and the ignition in them will turn on automatically at the moment when the choke lever is pulled out. There should be no errors.

DIY instructions for setting up and adjusting

Before proceeding to setting up the Husqvarna 137 chainsaw, you need to install it. Before starting work, you need to study the device of the Husqvarna 137 chainsaw.

  • Be sure to wear gloves for protection. They are not included in the package, so you need to take care of their purchase in advance. First you need to install the saw comb and secure it with two screws.
  • If chains and bars are not installed, they should also be replaced. To do this, remove the cover and the nuts securing it. If there is a shipping pad on the chain, remove it.
  • Adjust the chain tension with the adjusting screw. It is important that the gripper can enter the hole in the tire. To advance the gripper, turn the adjusting screw counterclockwise. This way the correct gripping position can be achieved.
  • Next, you need to prepare the chain for installation. For this, its correct position is selected. A sprocket is placed on the chain, which is located behind the clutch drum. The chain is passed between the sprocket teeth.
  • The top of the guide bar must be moved into the groove of the guide bar.

When the installation is over, you can proceed to setting up the "Husqvarna 137" chainsaw.

  • First you need to set the saw switch to the "On" position.
  • Then pull the idle throttle lever until it stops.
  • Pull the starter cord with a sharp movement of your hand (but not more than ten times).

To start and tune an already warm engine, you need to:

  • Set the saw switch to the "On" position.
  • Aim the Mode Change Knob at HalfChoke.
  • With your right hand, you need to pull the cord until the engine starts to work.
  • Press the engine starter to return to idle speed.

For the disassembly and assembly process, see:

How to install a repair kit?

If the problem touches the carburetor injector, you can try to fix a serious malfunction with your own hands. However, the manufacturer recommends to deal with this nuisance only by replacing the unit.

To remove the carburetor, you must completely clean the saw of sawdust and shavings. For this it is necessary to use a compressor and a compressed air gun. Then the filter cover is unscrewed and the filter element is removed. After that, all drives and throttle rods are disconnected from the husqvarna carburetor. The carburetor can now be removed from the saw.

Next, you need to completely disassemble the carburetor and replace all the elements that the repair kit offers. Namely, spare parts and gaskets. This will save you from damage in the future.

Now you know how to adjust the carburetor of the famous Husqvarna 137 chainsaw.