Chainsaw Husqvarna 137 starts and stalls

Specifications Husqvarna 137

Carburetor Husqvarna 137

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

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 a screw of its tension;
  • Protective shield for the right hand.
chainsaw, husqvarna, starts, stalls

Photo of a disassembled Husqvarna 137 chainsaw

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

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 turn the screw 4.5 turns counterclockwise. 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 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 using a screwdriver with an adjusting screw in increments of ¼ turn to the right or left.

Chainsaw Husqvarna 137

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

Chainsaw Husqvarna 137 (Husqvarna) refers to 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.

Advantages: saws perfectly, there are a lot of components, easy to operate.

Disadvantages: yes, in general, then no

Feedback: I have had it for 4 years, on the whole, I am satisfied, the thing is reliable, due to its stupidity (there was no experience in sawing), I completely forgot about oil for the chain, sawed for about a year, then I realized that I messed up. The oil pump flew, changed in the service. only 800 rubles. after that, the oil began to leak, it turned out that the pump was not fully tightened, tightened, everything is OK. So I advise everyone who writes that the oil is flowing to check how the oil pump is tightened.

Sergey Ivanovich: Experience of using Husqvarna 137 over 3 years

Advantages: Saw excellent for its characteristics, lightweight, comfortable, powerful enough for everyday life, availability of consumables.

Disadvantages: Does not refuel itself and also does not want to saw it on its own, you have to hold it in your hands))

Why does a chainsaw stall when heated

The situation in which a chainsaw starts up cold, and in the process of heating it can stall, is familiar to many who deal with them. The main reasons for this behavior of the saw are as follows.

  • Defective ignition module (coil). Determine the malfunction by checking the spark first on a cold engine, and then on a hot one. If there is no spark on a hot engine, then it is worth trying to fix the malfunction by replacing the ignition coil.
  • The carburetor of the chainsaw has an incorrect setting (fills a hot candle). You can determine the problem by how the saw is started on a cold one. If for a cold start it is not required to close the air damper, and the engine starts without a preliminary flash, then the fuel mixture is formed incorrectly and after the engine warms up, the fuel fills the spark plug and makes it impossible to start. The problem is eliminated by adjusting the carburetor.
  • Spark plug defective. In such a situation, similar to a faulty ignition coil, the spark disappears when the engine heats up. It is worth trying to replace the spark plug with a new one, and if this does not help, then you need to check the ignition coil and the gap between it and the flywheel.

You can check the ignition coil using a multimeter or by replacing it with a known good one. The test with a multimeter of the primary and secondary windings is carried out in the resistance measurement mode. The resistance index of the primary winding, working coil, is 1 kOhm. secondary 4 kOhm.

Malfunctions leading to improper operation of the chainsaw

There are a number of faults that must be taken into account when diagnosing, since they can lead to interruptions in the operation of the saw.

  • Worn crankshaft bearings. With worn out crankshaft bearings, runout is inevitable on the main shaft, where the flywheel is attached. In such a situation, it is impossible to adjust the gap between the flywheel and the ignition coil, which entails interruptions in sparking, and the unstable operation of the chainsaw.
  • Impulse channel contamination. The impulse channel serves to ensure the operation of the fuel pump, respectively, its contamination leads to improper operation of the pump, which will make it impossible for the saw to work (it will start and immediately stall).
  • CPG wear. As a rule, with increased wear of the CPG, there is a decrease in compression in the engine of the chainsaw, which will necessarily affect its ability to develop speed.
  • Dirty fuel and air filters.

Why does a chainsaw stall under load

In some cases, the chainsaw under load is unable to work normally and simply stalls. A common reason for this behavior is improper carburetor adjustment, or air leaks through the crankshaft oil seals or carburetor gasket. And also this behavior can occur due to leaks in the carburetor.

It is best to diagnose the cause and eliminate the fact that the chainsaw starts and stalls under load, best of all in a service center, since a special tool is needed to check the tightness of the carburetor and crankcase.

A saw that is unable to operate under load will also be unsteady at idle speed. They will “float”. Diagnostics begin with a check for leaks in the crankcase and carburetor. If air leaks through the crankshaft oil seals, they must be replaced. If air leakage is detected in the carburetor, the cause can be eliminated by installing a repair kit of gaskets.

Only after the above actions have not yielded results and the crankcase with the carburetor is sealed, you can start adjusting the carburetor.

The reason for this algorithm is as follows, if the air leak from the crankcase is not eliminated, but the carburetor was simply adjusted to normal engine operation, then the fuel mixture will contain more fuel than is required with a sealed crankcase, which in turn will significantly increase its consumption. Also, most likely, carbon deposits will appear in the engine, which will also negatively affect the further operation of the chainsaw.

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In some models of chainsaws, to ensure the operation of the fuel pump, special hoses are installed that transmit an air impulse from the engine crankcase to the carburetor fuel pump. If this hose is frayed, the saw will idle unevenly and will not work at all under load.

Owners of Husqvarna 137 and Husqvarna 142 household chainsaws should first of all check the impulse hose for any deviations in engine operation from the norm, since this is considered the most common reason for the breakdown of these chainsaws.

A video showing how to replace a defective impulse hose with your own hands on a Husqvarna 142 chainsaw can be viewed below. It shows step by step the process of disassembling the saw, shows the impulse hose and stipulates the consequences of its malfunction Husqvarna 142.

The main causes of chainsaw breakdown

Although the chain saw is a simple device, from time to time, problems arise in its operation, which can only be fixed by disassembly. The following malfunctions can be cited as examples:

  • the chainsaw is not picking up speed;
  • the chainsaw stops functioning in the cut;
  • the chainsaw starts and stalls;
  • the chainsaw loses its power;
  • the chainsaw stalls when pressed.

Most often, malfunctions are associated with interruptions in the functioning of the motor, as well as malfunctions of other systems and components. Proper handling of this technique is essential. When all the rules of use are followed, problems with a high probability lie in the most obvious. When looking for the causes of problems, it is advisable to start by checking the simplest part of the chain saw and finish the most difficult.

Why does a chainsaw stall when heated

It often happens that the chainsaw starts up on a cold one, but stalls during the heating process. This behavior of the tool can be caused by the following reasons:

  • The carburetor is incorrectly set. You can identify this problem by how the device is started up on a cold one. If it is performed without closing the air damper, and the engine starts without a preliminary flash, this means that after heating the engine, the fuel fills the candle. The solution to this problem is to adjust the carburetor. Details on carburetor adjustment
  • Coil (ignition module) malfunction. This problem can be identified by sequentially checking the spark, first on a cold, and then on a hot motor. If there is no spark on a hot engine, then you need to replace the ignition coil.
  • Defective spark plug. In this situation, as in the case of a malfunction of the ignition module, the spark disappears when the engine heats up. It is necessary to replace the spark plug with a new one, and if this does not lead to a solution to the problem, then the ignition module and the distance between it and the flywheel should be checked.

Checking the main systems of the chainsaw

If the chainsaw refuses to work properly, you must make sure that all the conditions required for its normal operation are provided:

Then it is necessary to sequentially check the functioning of all its elements. First you need to check the fuel tank. If the cause is not volume and quality of fuel, then spark plugs may be the likely cause of the problem. The gap at the candle should not exceed 0.5 millimeters. If it is too small, it means that carbon deposits have been deposited on the candles. In this case, remove the candles, clean them, then reinstall and try to start the chainsaw. In addition, it is advisable from time to time to completely replace the candles with new ones, even if they are in good condition.

Then you need to check the condition of the fuel filter and carburetor. Self-cleaning of the fuel filter is a simple task, but it is best to entrust the repair of the carburetor to specialists.

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Owners of chainsaws sometimes have to deal with the fact that the saw, for no apparent reason, stops working normally. To understand why the chainsaw stalls under various operating modes, and also to describe how you can diagnose a malfunction, we will try in our article.

The chainsaw starts and stalls. the reason

If the chainsaw starts and stalls at the first attempts to do the job, then the reason may be problems with the chain brake or its jamming due to lack of lubrication. In this case, the oil level is measured. If the amount of lubricant is sufficient, then the cause may be in the tube that leads it to the lubricating mechanism.

Another reason may be a broken carburetor. If he only needs adjustment, it can be done independently in accordance with the instructions. If the carburetor needs cleaning or repair, then you cannot do without the help of professionals.

Another possible cause of this malfunction is a low fuel level in the tank. In this case, the saw stalls when tilted, since the remaining fuel mixture ends up in the part of the tank opposite to the place where the suction tube is located.

Chainsaws internal combustion engine characteristics

The main malfunctions of chainsaws are associated with engine failures. Domestic and foreign manufacturers use single-cylinder two-stroke internal combustion engines as a chain drive. The motor design is simple. The ignition is conventional, without the installation of capricious electronics. Chainsaw engines operate reliably in various climates. Fuel for a carburetor engine is obtained by mixing AI-92 gasoline and special oil. Since there is no oil pump in the design, the piston and cylinder are lubricated with a mixture of gasoline and oil. The saw motor develops power from 2 to 5 kW, and the crankshaft rotational speed reaches 14,000 rpm. At such high rpm and load, the oil requirements are special. Use the oil specified in the instructions. When changing the oil to a conventional motor tool, the resource of the tool is sharply reduced. Remember that filling the tank with gasoline without adding oil is strictly prohibited.

Cleaning and adjusting the carburetor

If all of the above did not help, then, most likely, adjustment or cleaning of the carburetor is required. It is not recommended to do these procedures on your own, since most often such attempts still end with a trip to the service. So it’s better to go there right away and not disassemble anything on your own. But if you still want to dig deeper yourself, then it is best to watch a video that shows how experts do it:

I will end on this. Thanks for attention! Read more articles on this site! Until next time!

Using a chainsaw makes hard work easier. But sometimes the chainsaw starts and stalls, the reason for this can be any. What to do? You have to choose: take it to the workshop to a specialist or try to repair it on your own. We will try to help the reader understand the reasons for the refusal, ways to eliminate breakdowns and give advice on the operation of chainsaws. In turn, it will be useful for the owner to familiarize himself with the factory operating instructions and the design features of his chainsaw. This information will help him to correctly use and professionally repair the tool.

Read more:  Husqvarna 236 Chainsaw Carburetor Adjustment

Chainsaw device diagram.

Low oil in the fuel mixture

Let’s look at the most unpleasant case first. Why? Because before you manipulate the filters, it is better to make sure that your oil and gasoline are mixed in the correct ratio.

Here, however, it is worth noting that if your saw has already been turned on many times (for example, ten times), but continues to start, and then stalls again when the speed increases, then apparently everything is in order with the fuel. Otherwise, she would have simply stopped working at all.

Husqvarna 137 Chainsaw Fuel System Rebuild Overview

But still, I recommend that you immediately dispel the slightest doubts about the quality of the fuel, as soon as your saw stalled during a set of revolutions for the first time. Because, if the reason is in the fuel, then, as mentioned above, you can get expensive repairs. Otherwise, you can still do it. To dispel doubts is to drain the old fuel from the tank and fill in freshly prepared fuel, in which oil and gasoline are mixed in the correct proportion.

The correct ratio is best seen in the instructions for the saw. If you have lost it, then we look at the ratio on the oil package. It is usually 1:50 or 1:40. If the oil is used “non-native” (well, for example, for Stihl chainsaws, Stihl will also not be enough “native”), then I recommend using a ratio of 1:40, even if 1:50 is written on the package with oil.

For accurate dosage, I myself personally use a medical syringe and a measuring container in which one liter of gasoline can be clearly measured. I pour a liter of gasoline into a container, draw 25 (at 1:40) or 20 (at 1:50) cubes of oil into the syringe and add it to the gasoline.

After preparing a new mixture, drain the previous mixture from the tank, in which we are unsure, and fill in the fresh one just prepared.

Now that you have done everything to dispel any doubts about the quality of the fuel, we move on to further actions.

As I wrote above, with a lack of oil on the piston and cylinder walls, scuffs can form. and they are almost always formed. If you are lucky and no seizure appears, then with the new fuel mixture prepared in the correct ratio, the chainsaw should start working normally.

If seizures appear, then the saw can start and stall several more times, after which it will stop starting altogether. In such a situation, I sympathize with you, since, most likely, now you will need to replace the piston group, which will be very expensive.

Husqvarna 41 (Poulan, Husqvarna 51,55) Fuel Starvation and possible reasons.

If the saw, as before, starts up and stalls at high speeds, then we carry out manipulations with the filters.

Do-it-yourself Stihl chainsaw repair

This brand is very popular among both individuals and professionals. This easy-to-use and reliable tool can last a long time without being repaired. There are situations when the Stihl chainsaw does not start or stalls right after the factory. You can find out what to do in these cases by watching the video instruction.

Ignition system

Do-it-yourself repair of the “Husqvarna 240” chainsaw, and of any other model, should begin with troubleshooting the ignition system.

First of all, experts recommend getting and inspecting the candle. The state of this element will indicate deficiencies in the operation of the fuel system.

  • If the plug is completely dry, it means that the fuel mixture does not enter the cylinder. In this case, the plug is screwed into place and the fuel system is repaired.
  • If the spark plug is heavily flooded with a fuel mixture, then the rules for starting the unit may be violated, or the carburetor is poorly adjusted. Shut off the fuel supply and start the starter. This is done in order to remove excess fuel. The candle must first be cleaned with a sharp object, then rinsed with detergents, dried with a hairdryer and reinstalled. After that, the tool is launched and its work is checked.
  • If there are no fuel residues on the spark plug, then it must be cleaned, washed and checked for a spark. Its absence may indicate a violation of the gap between the flywheel and its magnetic circuit or a breakdown of the ignition module.

A malfunction in the ignition system may be due to the use of poor oil or an incorrect ratio of gasoline to oil.

Air filter dirty

It is quite easy to make sure that the air filter is dirty. You just need to remove it and start the chainsaw without it. if the saw works fine, then it’s in it and it just needs to be changed or washed, depending on its type. And do not be afraid that the chainsaw will work for a while without dust protection. if there is no dust cloud around you, then everything is fine.

So, remove the air filter. To do this, you need to remove the cover from the rear upper part of the chainsaw, which is fastened either with screws, or simply with some kind of lock that you just need to turn or snap off.

If the saw operates normally when the filter is removed after starting up, then it is dirty.

The air filter is either felt or nylon. The first resembles cotton wool or synthetic winterizer, and the second looks like a fine mesh of nylon threads stretched over a plastic case. Felt needs to be changed to a new one, but nylon can be simply washed in soapy water, dried and put back in place.

Nylon filter

Felt filter

Well, then we calmly use the chainsaw.

Carburetor repair

The heart of any chainsaw is the carburetor, which is responsible for most tool breakdowns.

Do-it-yourself repair of this unit consists of disassembly and cleaning. If the breakdown is serious, then contact the service center for help.

Most often, tool malfunctions are associated with the use of low quality gasoline or oil. To protect the carburetor from damage, it is necessary to follow some preventive measures:

  • Start the chainsaw strictly according to the instructions.
  • It is not recommended to store gasoline in a plastic container. This will help to avoid heavy carbon deposits.
  • The fuel mixture cannot be stored for a long time, as it loses its quality over time.

Why does a chainsaw stall when heated

It often happens that the chainsaw starts up on a cold one, but stalls during the heating process. This behavior of the tool can be caused by the following reasons:

  • The carburetor is incorrectly set. You can identify this problem by how the device is started up on a cold one. If it is performed without closing the air damper, and the engine starts without a preliminary flash, this means that after heating the engine, the fuel fills the candle. The solution to this problem is to adjust the carburetor. Details on carburetor adjustment
  • Coil (ignition module) malfunction. This problem can be identified by sequentially checking the spark, first on a cold, and then on a hot motor. If there is no spark on a hot engine, then you need to replace the ignition coil.
  • Defective spark plug. In this situation, as in the case of a malfunction of the ignition module, the spark disappears when the engine heats up. It is necessary to replace the spark plug with a new one, and if this does not lead to a solution to the problem, then the ignition module and the distance between it and the flywheel should be checked.
Read more:  Why Chainsaw Stalls When I Press On The Gas? Causes And Solution!

The chainsaw starts and stalls. the reason

If the chainsaw starts and stalls at the first attempts to do the job, then the reason may be problems with the chain brake or its jamming due to lack of lubrication. In this case, the oil level is measured. If the amount of lubricant is sufficient, then the cause may be in the tube that leads it to the lubricating mechanism.

Another reason may be a broken carburetor. If he only needs adjustment, it can be done independently in accordance with the instructions. If the carburetor needs cleaning or repair, then you cannot do without the help of professionals.

Another possible cause of this malfunction is a low fuel level in the tank. In this case, the saw stalls when tilted, since the remaining fuel mixture ends up in the part of the tank opposite to the place where the suction tube is located.

What to do if the chainsaw stalls when you press the gas

One of the most common questions regarding the operation of this device: why does the chainsaw stall when you press the gas and what should be done to solve this problem? In such a situation, you need to do the following:

  • check the fuel filter;
  • inspect the fuel hoses for leaks;
  • check the muffler;
  • try to increase the speed a little;
  • check the condition of the rubber seals on the crankshaft.

Why does a chainsaw stall under load

Sometimes the saw will not function properly under load. This is most often caused by improper adjustment or leaks in the carburetor. In addition, air leaks through the carburetor gasket or crankshaft oil seals may be the cause of this problem. A tool that is unable to function under load also cannot maintain idle speed reliably.

Diagnostics begins with checking the carburetor and crankcase for leaks. If air leaks through the crankshaft oil seals, they need to be replaced. If air leakage in the carburetor is detected, the installation of a repair kit of gaskets is required to solve the problem.

If these actions did not lead to the desired result and the crankcase with the carburetor is tight, then the carburetor needs to be adjusted.

If a Husqvarna chainsaw stalls under load, then for any deviations in the functioning of the engine, you should first of all check the impulse hose, since this is the most common cause of breakage of this brand of chainsaws.

Why the chainsaw doesn’t pick up speed and stalls

If the saw cannot gain speed or stalls when you press the gas, then most likely this is caused not by the tightness of the carburetor or engine crankcase. This problem is eliminated by checking for leaks and adjusting the carburetor.

In addition, this malfunction may be associated with a defect in the fuel tank breather. Due to the formation of a vacuum in the fuel tank during the operation of the chain saw, the required volume of the fuel mixture does not enter the engine, as a result of which it cannot gain speed or stalls. If you stop the chain saw, open and close the fuel tank and turn it on again, it will work normally for about five minutes, and then it will stop picking up speed again or stall.

Another possible reason that the saw is not able to pick up speed may be excess carbon deposits in the muffler, which makes it difficult for exhaust gases to escape, which reduces the power and engine speed.

Why the chainsaw stalls, the main reasons.

Checking the main systems of the chainsaw

If the chainsaw refuses to work properly, you must make sure that all the conditions required for its normal operation are provided:

  • fuel;
  • spark;
  • grease;
  • air.

Then it is necessary to sequentially check the functioning of all its elements. First you need to check the fuel tank. If the cause is not volume and quality of fuel, then spark plugs may be the likely cause of the problem. The gap at the candle should not exceed 0.5 millimeters. If it is too small, it means that carbon deposits have been deposited on the candles. In this case, remove the candles, clean them, then reinstall and try to start the chainsaw. In addition, it is advisable from time to time to completely replace the candles with new ones, even if they are in good condition.

Then you need to check the condition of the fuel filter and carburetor. Self-cleaning of the fuel filter is a simple task, but it is best to entrust the repair of the carburetor to specialists.

The main causes of chainsaw breakdown

Although the chain saw is a simple device, from time to time, problems arise in its operation, which can only be fixed by disassembly. The following malfunctions can be cited as examples:

  • the chainsaw is not picking up speed;
  • the chainsaw stops functioning in the cut;
  • the chainsaw starts and stalls;
  • the chainsaw loses its power;
  • the chainsaw stalls when pressed.

Most often, malfunctions are associated with interruptions in the functioning of the motor, as well as malfunctions of other systems and components. Proper handling of this technique is essential. When all the rules of use are followed, problems with a high probability lie in the most obvious. When looking for the causes of problems, it is advisable to start by checking the simplest part of the chain saw and finish the most difficult.