How to Repair Zama Carburetor on a Chainsaw

Chainsaws partner 350: causes of breakdowns, DIY repair

How to Repair Zama Carburetor on a Chainsaw

Almost every summer resident or villager has a chainsaw in his arsenal, the partner model 350 is especially popular. However, sometimes this tool fails. If you encounter such a problem, then do not despair, because its mechanism is so simple that you can even do the repair yourself. The article discusses the main causes of breakdowns and their elimination.

Characteristics of the chainsaw Partner 350

This model is in considerable demand among consumers, but most often it is bought by summer residents to work on their sites. They use a saw not only for harvesting firewood, but also in construction.

In general, Partner 350 chainsaws are distinguished by their compact size. They are equipped with a fairly powerful engine. Their main advantages are easy start-up and reliable operation. performed by a quality electronic ignition system and fuel pump.

Using such a chainsaw is completely safe. A protective system was built into it, which automatically starts the inertial brake for the circuit. In the same mode, its lubrication is also carried out.

With the launch of the chainsaw, the Partner will not have problems even in winter, since it has a fuel primer. The starter drum is equipped with an impeller that helps cleanse itself of dirt. In addition, manufacturers supplied the tool with CCS. This design retains residual particles, and is also used for long-term use of an air filter.

The developers made chrome walls to increase the life of the chainsaw on the cylinder of the piston group. This model also has an ergonomic handle and anti-vibration system.

What kind of breakdown may occur

Chainsaw malfunctions can be divided into groups:

  • Violations in the engine (ignition, exhaust and cylinder-piston systems, fuel supply).
  • Failure of components such as clutch, chain brake, lubrication system or tire.

Breakdown of the chainsaw engine is more common than others. Most of the time is spent on its detection and repair. As a rule, it comes down to such manifestations when the engine is unstable or completely stalls, the engine does not start, does not develop power.

Before proceeding with the repair of the chainsaw, first check all the possible causes of violations in its functioning, and even better look. Fortunately today on the Internet you can find any material of interest.

Then you have to prepare the necessary tools for repairing breakdowns:

  • instrument circuit (must be included in the delivery);
  • keys, including for spark plugs.

Malfunction ignition system

When the engine refuses to work, but at the same time there is a spark on the candle, and the fuel comes in, ignition should be checked.

It is not difficult to check it at all: unscrew the candle, and between the contacts adjust the gap, connect it to the wire and press it to the cylinder body. After that, watch for when a spark appears.

If any deviations occur, you need to configure the ignition system. In general, this process is similar to adjusting the ignition in other two-stroke engines.

Fuel supply problem

To establish a similar malfunction of the chainsaw will turn out when inspecting the candles. Fuel may not enter the cylinder for various reasons:

  1. The fuel filter in the tank is very clogged.
  2. The hole in the tank lid clogged, which prevents the flow of gasoline.
  3. There is poor or no fuel coming from the carburetor.

In the event that there is no correct ratio between the gasoline and the air mixed in the carburetor or the fuel is not supplied enough, check whether the channels and the carburetor air filter are clogged. In addition, you may need to adjust it.

The filter is carefully removed and washed with detergent before cleaning. after which it is left to dry. Then it is put in place.

The carburetor is adjusted, as a rule, with screws. maximum and minimum revolutions. When carrying out it, you must strictly follow the instructions for repairing the chainsaw, otherwise you can ruin the motor. Sometimes manufacturers leave only one adjustment screw to prevent the inexperienced craftsmen from interfering with the carburetor.

If debugging has not fixed anything, then you should clean the channels and the filter grid. and also check the integrity of the membrane.

Do not forget that the carburetor is one of the complex mechanisms of the chainsaw, so you need to approach it responsibly with cleaning and disassembling.

It consists of many small elements that can quietly jump out and find them will be difficult. Often after disassembling this device, some users cannot assemble it.

What to do if a muffler is clogged

If the chainsaw engine functions normally at low speeds, but at high smoke and stalls, then the reason is most likely in the muffler. Disassemble it first, but remember to close the outlet.

Then disassemble and clean from soot using a dry method or detergents, blow dry a hairdryer, assemble and carry out installation.

Do not dry clean without special protective equipment, as carcinogens in tan are released as dust. Inhaling it is very dangerous. When operating a chainsaw, it is necessary to monitor the quality of the fuel mixture.

Chain breakage

It is necessary to regularly lubricate the chain during the operation of the saw, because it works in extremely difficult conditions. Its service life is adversely affected by abrasive particles, dust and even overheating.

If you leave the chain in a dry state, then soon it will stretch and overheat. In the worst case, jamming may occur, that is, a sprocket failure. Oil is fed through it through channels that are often clogged with sawdust. They must also be cleaned regularly.

In addition, always clean debris and sawdust under the chainsaw cover, as this may cause the chain brake to fail. In addition, contamination has a bad effect on the performance of the device.

Failure of the cylinder-piston group

The most serious malfunctions are considered to be scratches on the surface of the piston and cylinder, their damage, dropping of the piston rings in the grooves, breakdown of the crankshaft bearings.

Most of them lead to the inability to start the engine, as pressure drops in the cylinder. There are several options for repairing and checking the condition of the cylinder-piston group (CPG).

For example, you can measure compression in the engine. For this operation, a compressometer is used, which is mounted in the candle hole. Thus, it is possible to check the condition of the parts of the CPG.

To see the side surface of the cylinder, it is necessary to remove the muffler and look into the gap that has opened. Although the review is limited, the general status of the CPG can be seen.

To accurately assess the performance of the cylinder-piston group, you will have to completely disassemble the chainsaw engine. First, the crankcase is disconnected from the cylinder, after which the piston is pulled out. If it has chips, badass and big scratches, then it must be changed.

Low compression occurs most often during coking and damage to the piston ring. Be sure to check that there is no soot on it. In addition, it should sit loosely in the piston groove and be pressed against the surface of the cylinder.

In general, you should always monitor the cleanliness of the chainsaw and various holes. This is the only way to avoid many breakdowns and further repairs. Be sure to see how to do it right.

Chernyshov Alexander Romanovich

information on the topic:

DIY chainsaw repair

DIY chainsaw repair

A chainsaw with all the desire can not be attributed to complex devices.

over, the simplicity of the design is its hallmark. Nevertheless, repairing a chainsaw can take a lot of time. The difficulty is not in the repair itself, but in the accurate diagnosis of the malfunction. One and the same sign of inoperability can be caused by many reasons. Therefore, before you immediately begin to disassemble the carburetor or engine, you need to think carefully and analyze the symptoms of the malfunction.

No chainsaw repair manual can replace simple logic.

Chainsaw Repair

All malfunctions of chainsaws can be divided into two main groups: malfunctions of the engine with all its components and systems (ignition, fuel supply system, cylinder-piston group, exhaust system) and malfunctions of other components (chain brake, lubrication system, clutch, tire, etc.).

Engine malfunctions

Violations in the operation of chainsaw engines occur quite often, it is their detection and correction that takes the most time from users.

Basically, they come down to the following manifestations:

  • The engine will not start;
  • Starts up, but stalls;
  • unstable;
  • does not develop power, i.e. normally works at idle, but stalls under load.

When repairing a chainsaw with your own hands, you need to proceed by the method of exclusion. check in turn all the possible causes of the malfunction, starting with those that take less time to check and eliminate (for the design and operation of a two-stroke engine, see here)

Almost all types of engine malfunctions listed above can be caused by ignition system malfunctions. Therefore, when they occur, it makes sense to start troubleshooting with a candle. This is all the more justified because the state of the latter can provide useful information about the operation of the fuel system. So, if a problem occurs, you need to turn out the candle and inspect it.

Chainsaw ignition system: 1. flywheel with built-in magnets, 2. ignition module, 3. candle, 4. high voltage wire.

The wire is disconnected, and the candle is twisted with a special key.

Unscrew the spark plug

If the candle is dry, it means that the problem is most likely not in the ignition system, but in the fuel mixture not entering the cylinder.

You can wrap the candle back and take up the fuel system. If the candle is heavily sprayed with the fuel mixture, then there is an excess of it. This may occur due to misregistration of the carburetor or violation of the rules for starting.

The candle is wiped and dried, the cylinder is drained, cutting off the fuel supply and working as a starter to ventilate the combustion chamber and remove excess fuel. Then set the candle in place and repeat the launch.

The presence of a large amount of black soot also indicates a malfunction in the fuel system.

Black carbon candle

The ratio between oil and gasoline in the mixture may be violated, the carburetor is not adjusted, or poor-quality oil is used.

The candle is washed in gasoline, cleaned with a needle or an awl of carbon deposits, clean the electrodes with a fine sandpaper and put in place.

In all these cases, it is not superfluous to check the gap between the electrodes of the candle. Depending on its brand, it should be in the range of 0.5-0.65 mm. It is necessary to check the sealing gasket of the candle.

If it is worn or damaged, the tightness of the combustion chamber may not be ensured, which leads to a decrease in compression in the cylinder and problems in the engine.

Even if in the case of checking the spark plug there is good reason to believe that the fault is in the fuel system, you need to check the spark plug for a spark.

At least in order to be sure that everything is in order with this. For this:

  • put on the spark plug cable;
  • using pliers with insulated handles, apply thread or nut to the cylinder;
  • pull the starter handle and see if there is a spark or not.

If there is no spark, you just need to replace the candle.

If the new candle does not have a spark, it is necessary to check the condition of the high-voltage wire for an open and contact with the candle.

The reason for the absence of a spark can also be a faulty ignition module or a violation of the gap between it and the flywheel magnetic circuit. It should be 0.2 mm. Violation of the gap becomes especially likely if before that the saw was disassembled with the flywheel and the ignition module removed.

The clearance is set using a 0.2 mm thick gasket placed between the flywheel boss and the ignition module. Defective ignition module must be replaced.

Having checked the ignition system in this way and not having detected a malfunction, we can proceed to the fuel mixture supply system.

Fuel supply system.

If inspection of the spark plugs found that fuel does not enter the cylinder, you need to consider all the possible reasons for this. It could be:

  • non-receipt of fuel from the tank due to a clogged hole in its cap (breather), while a vacuum is created in the tank that prevents fuel from flowing out;
  • contamination of the fuel filter installed in the tank;
  • not receipt or insufficient supply of fuel mixture from the carburetor to the cylinder.

To diagnose the first two reasons, it is enough to disconnect the fuel hose from the carburetor and see if fuel flows out of it or not.

If it flows fully, the breather and filter can not be checked, if it does not or weakly flows, we can assume that the cause of the malfunction is found.

The breather is cleaned with a needle. The fuel filter is removed through the filler hole of the empty fuel tank with a wire hook, together with a suction hose, from which the filter is disconnected and cleaned or replaced with a new one.

Chainsaw manufacturers recommend changing the fuel filter every 3 months.

Fuel filter

An insufficient supply of the fuel mixture from the carburetor to the cylinder or a violation of the correct ratio between the fuel and air mixed in the carburetor can occur for several reasons: due to clogging of the air filter, unregulated carburetor, clogging of its channels or mesh filter.

As a rule, repairing chainsaws is not complete without cleaning the air filter, since it gets dirty quite quickly.

When this happens, air intake to the carburetor decreases, the fuel mixture at the outlet of it turns out to be too enriched, which disrupts the normal operation of the engine.

Carefully remove the dirty filter for cleaning so that dirt does not get into the carburetor. The filter should be cleaned or washed in water with some detergent, dried and installed again.

Air purification system: 1. the cover closing the fine filter, 2. the fine filter, 3. the cover closing the coarse filter, 4. coarse filter (it may not be).

Carburetor misregistration is eliminated by its adjustment.

Usually this is done with three screws. maximum and minimum speed and idle screw. Adjustment must be carried out in strict accordance with the instructions, non-observance of which can lead to engine damage. Some manufacturers of saws leave only one adjustment screw (idle speed). to exclude unwanted interference of inexperienced users in the operation of the carburetor.

An example of adjusting the carburetor of a chainsaw, see the article Chainsaw Work.

If the carburetor adjustment did not help, you need to clean its channels and filter mesh, and at the same time check the integrity of the membrane. A carburetor is one of the most complex chainsaw devices, so you need to start disassembling and cleaning it with a full understanding of the responsibility of this operation. It consists of many small parts that have the peculiarity of quietly popping out of their seats and irretrievably lost, so that, having disassembled this capricious device, you can not assemble it.

Chainsaw carburetor.

The upper arrow is the fuel hose, the lower arrow is the air damper drive.

Chainsaw carburetor. Arrow. throttle actuator lever cable.

Chainsaw carburetor.

Arrow. fuel hose.

Disassembled chainsaw carburetor

Below is a diagram of another carburetor chainsaw.

Chainsaw carburetor circuit

If there is no experience and self-confidence, it is better to entrust the repair of a chainsaw carburetor to a service center specialist.

Sometimes for high-quality cleaning of the carburetor it is necessary to apply ultrasonic cleaning.

Muffler. Often the cause of engine malfunction, especially in the case when the engine is operating normally at low revs and stalls under load, becomes clogging of the silencer’s spark arrester, which prevents normal exhaust, from the combustion products.

Repair in this case consists in removing the muffler, disassembling (if it is collapsible) and wet cleaning it from soot using detergents. The non-separable muffler is dried with a hairdryer after washing. Remember that soot contains substances that are carcinogens, and dry cleaning, which may cause inhalation, is unacceptable.

When removing the muffler, the engine outlet is plugged with a clean rag.

Chainsaw muffler

One of the reasons that the muffler may become clogged is the use of a fuel mixture with excess oil (the amount of oil is more than the manufacturer recommends), and the use of oil that is not suitable for two-stroke engines or low-quality oil.

Malfunctions of the cylinder-piston group are the most serious. This is the deterioration of the cylinder and piston, scratches and seizures on their surface, wear or sinking in the grooves of the piston rings, wear of the crankshaft bearings.

Most of these malfunctions lead to a drop in pressure in the cylinder and, as a consequence, to the inability to start the engine, or its inability to give full power. There are several ways to assess the status of a cylinder-piston group (CPG).

Piston and crank mechanism

You can remove the muffler and look through the opened window, in which a part of the side surface of the cylinder is visible.

Despite the limitations of the review, a general idea of ​​the state of the CPG in this way can still be obtained.

It is useful to measure the compression in the engine, which is quite informative regarding the condition of the parts of the CPG.

The operation is carried out using a compressor installed in the candle hole.

Chainsaw Engine Compression Measurement

The crankshaft is rotated using an electric motor (drill) with a flexible shaft or manually by a starter, while controlling the pressure on the pressure gauge. The last for a workable chainsaw should be at least 8-9 atm (0.8-0.9 MPa). With its decrease, engine power also drops. At a pressure of 5 atm, the engine may perhaps work, but only at idle.

Video: How to Repair Zama Carburetor on a Chainsaw

It is possible to accurately assess the condition of the CPG only by completely disassembling the engine. by disconnecting the crankcase from the cylinder and removing the piston.

If the latter has scuffs, chips or deep scratches, it must be changed. In relation to the cylinder, when developing or damaging the surface, it is possible to squander it under the repair size. The cause of low compression may be wear and coking of the piston ring. The serviceable ring should be clean of carbon deposits, sit in the piston groove freely and firmly pressed against the inner surface of the cylinder.

Chain lubrication system

A rare guide for repairing a chainsaw goes without mentioning the faults in the chain lubrication system, which are quite common.

They usually occur in non-delivery or insufficient supply of lubricant to the chain and in oil leaks. If the chain is dry, first of all it is necessary to inspect and clean the channels through which oil is supplied to the tire. Their clogging is not uncommon.

Chainsaw Oil Pump

Oil pump adjustment.

1. adjustment screw.

With a significant (small is considered normal) oil leakage, it is necessary to check the tightness of the connection of the tubes to the pump fittings. They may fall or crack.

Violation of the tightness of the oil pipe, in addition to sagging, can lead to insufficient lubrication of the chain. The pump begins to suck in air, which affects its performance.

The leak is eliminated by replacing the tubes or sealing them with sealant.

The most serious damage to the lubrication system are cracks in the oil pump housing. In this case, it will have to be replaced.

Chain brake

Failure of the chain brake can occur due to contamination of the underwing and brake band with sawdust or grease.

How to repair a chainsaw

The wear of the tape also leads to this. In the first case, it is necessary to clean the axillary space, in the second. replace the brake band.

Chainsaw brake device

Replacing Wear Parts

Some parts of the chainsaw, subject to natural wear and tear, must be replaced after a certain period of operation.

Their failure is not considered a malfunction. Wear parts include a chain, a tire, a drive sprocket, anti-vibration system elements and some others.

If you do not replace the wearing parts in time, their excessive wear will adversely affect the other parts of the chainsaw.

In particular, if you do not change the tire and the drive sprocket in time, increased vibration will adversely affect the crankshaft bearings. The maximum depth of the tooth teeth should be 0.5 mm. In practice, sprockets are often operated up to a wear depth of 1 mm or more, without suspecting that this leads to an increased load on the crankshaft bearings and their accelerated failure.

When 3-4 chains are worn, it is necessary to change the tire itself, by this time its wear reaches its limit values.

The chainsaw tire wears out especially in the area that is cut most often, usually the underside of the guide bar. For uniform wear, each time the chain is replaced, the tire must be turned 180 ° relative to the horizontal axis.

When installing a new chain, a new drive sprocket should be installed.

Since under normal load the service life of the drive sprocket is twice as long as the service life of the chain, it is advisable to use one sprocket for alternating operation of two chains.

Thanks to this, the sprocket and chains wear out almost simultaneously. If a new chain is placed on a worn sprocket, then the leading chain links wear out much faster. For cost-effective operation of the chainsaw, always spend together: one guide bar, two chain sprockets, four saw chains.

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Sanya Sanya: Heck, thanks for the tip to look at my motor alcohols campaign a similar problem, and I removed carbon again and looked for the reason why I really thank you

Human Nevidimkin: I have the exact design of the blade, the carbohydrate is deafened by a steep gas hole, and it is completely extinct, carbohydrate, clean, mesh, spark, if you pull for a long time trying to grab, check the Inlet, it has all cracks with small cracks and found its gap, I can break during recording and cause the nozzle, or vomited me, and the reason for this, when the hot mash was won with one touch of gas, it was cold won, as usual, with a rapier suction, and then without sucking at idle, and now I’m a victim, I do not know what is wrong, I bought a handset if doesn’t help, they don’t know the work of all the good oils, the Manol blue Mernikov compression poured with excellent 5 years, the soil looks like a candle, a clean piston, korrichnevaya candles are usually either a pipe or a carbo, what if I have a broken tap, but I think that shooting will vryatli wall with him, I tore off when it was good

BB Black_111: perhaps the carbon that you created, or maybe not, or the improper preparation of the fuel mixture.

There should be no smoke with a heated saw

Vladimir Nekrilov: I saw that the gardener began to see that the rotation of the trees does not repel screams, and I can no longer start to sparkle, but gasoline comes for the reason why

Ignat Sinyuk: Why did the saws jump at a speed and I can not tow at idle, and when the gas from the bahik is cooled

Sergey Petrov: Just say it out loud.

Sergey Petrov: You are the great Savior of the Savior.

Evgeny Zuev: Guys, the question is: if the blow is in the upper carburetor carburetor, should you drown?

Where is the hose from the engine housing?

Video Wizard: signed and similar! unique channel required. everyone was chewed in a very detailed form, everything clearly showed that the sound was a little weak. Speak more loudly. good luck and thanks.

Video Wizard: Use a small magnet on the desktop for small screws, wires, nuts. you won’t lose the small spare screws.

thanks for the nice video !! Good luck

Retro games: why are all babynyats, well, speak louder

Edward Seiber: Tell me, please, if the gasifier can be installed in 50k from 30k?

Do-it-yourself saw repair at home. video

! !: A list of channels for Dad!

Rostislav Levenets: When buying a saw, we noticed that there is one black 2 pipes and a filter in the tank, as I understood it for gasoline and 2. a transparent filter without a filter and, in the end, cut off, is it for a hose?

Yurchik Bukov: Hi,

In general, an interesting question has ripened about the work of the saw. Chainsaw China, the trailer is fully operational, the power steering and one holds excellent, the plant is also good, but one thing still exists, and this point was originally in the present seen on her birthday, because it works this way from the moment shopping, what is this interesting question? And the question is, take the saw, of course, it’s cold, we have no problems starting and work, sawing firewood for about 20 minutes to 20 minutes to heat up, start povyshatsya impulse, as it would go in the morning and minute stalls with another, until it works.

But when he saw it cool, everything was in its original state, it completely reboots again and runs to full heat after 20 minutes, and then in the toilet stalls, and so round, from this point of view, the saw worked for six months. Again, and I would like to emphasize that this picture is only when the saw is heated.

Rather, I will be grateful for practical advice on what to look for. Thank you.

Andrey Bulgakov: Good afternoon, thanks for the advice I will try. Please tell me that I have the same motor saw. I can’t get a group of good ignition modules that could cause a spark, but when it started to work a bit and died, I didn’t get a hint. I will wait for a response

Vladimir Dorofeev: Hi,

I saw Partner 421. so that when the plant increased in the cold with gas, they immediately saw the stands. and when it got a little work. (first let the saw work at high speeds). that m.B. Business?

Sergey Zozulya: Good afternoon. Dear Benzo Master, I watched all my videos about carburetors and realized that I made a big mistake, that I exhaled the carburetor with a compressor.

After assembly, the saw does not start, and if a little gasoline spills into the cylinder, it will start.

Vladimir Shalamay: I have brass knitwear not to start. This is only if you are compressing gas into a carburetor recommended by ZAMA carburetor

MultiMehanic: How to connect powder with a carburetor?

Video on this topic

All of the following can equally be attributed to both chainsaws and saws.


The chainsaw brake cover has two purposes. At first, protection of the sawfly from the consequences of the “back strike” effect. Secondly, The brake cover locks the chain tension.

First appointment.

The chain on the tire moves away from the sawmill.

On the driving and driven sprocket, the chain changes its direction to the opposite, namely from bottom to top and top to bottom, respectively. If the tip of the tire of a working saw touches a tree, then according to Newton’s third law, a force will appear directed in the opposite direction, that is, from the bottom up.

The saw at this moment with moving cutting elements begins to move towards the sawyer and if this does not stop serious injury can not be avoided. This is called a kickback.

Most modern saws have a double saw back protection mechanism. The usual design of the saws is designed for “right-handed” sawers: with the right hand they take on the gas handle, and with the left hand for the front arc handle. The chain brake handle is designed so that with such a grip at the time of the reverse impact, as soon as the saw deviates more than 60 degrees from the horizontal, it will rest against the left hand, stopping movement towards the operator, and the chain stop mechanism will work.

This is only possible if two requirements are met: the chain braking mechanism is cocked, the saw is not raised above chest level. These requirements are described in the safety instructions for your saw.



The second appointment.

As a rule, the cover is put on over the tire with a chain for several studs and tightened with nuts. Thus, the tire is rigidly fixed in its position. On many saw models, the chain tension mechanism is mounted in the brake cover.

Note that there are versions of saw chain brake covers (both petrol and electric), on which semi-automatic tension mechanisms are installed.


Extremely unreliable and moody mechanism. In most cases, after their failure, the brake covers are changed to ordinary ones. Such an opportunity is always better to check with specialists.

Chain brake cover device.

The photo shows the brake cover of the Husqvarna 236 chainsaw chain.

It consists of a plastic case (p. 1), a brake band (p. 2), a cocking and braking mechanism (p. 3) and a tension mechanism (p. 4).

Before starting sawing, the braking mechanism is cocked, the brake band releases the drive sprocket.

At the moment when the brake handle rests on the operator’s hand, the braking mechanism is released and the brake band instantly fixes the drive sprocket so that it stops rotating.

As you can see in the photo above, in the cocked state there is a gap between the brake band and the drive sprocket.

This allows her to rotate freely. In the second photo, the brake mechanism worked, there is no gap between the tape and the sprocket, the tape rigidly fixes the sprocket.

The tensioning mechanism also works simply: with a small moment of tightening the nuts on the studs, the cover fixes the tire.

By turning the tensioner adjusting bolt, the tire shifts and the chains give the desired degree of tension.


Faulty brake system.

Mainly caused by the appearance of defects in the brake belt and the tension mechanism.

Due to defects, the tape does not completely or completely not release the drive sprocket. As soon as the operator gives full throttle, the drive sprocket cannot rotate freely, the clutch starts to rotate in the clutch cup. Due to friction and high temperature, both parts fail. At the same time, the brake band begins to heat up, which deforms the plastic of the cover.

Typical brake system malfunctions

  • Brake tape burst
  • Defective trigger
  • Burst spring
  • Broken knots

In case of any malfunction, repair of the brake cover is not advisable.

Only a replacement for a new one.

Faulty tensioning mechanism.

The main error leading to the breakdown of the tensioning mechanism is that before adjusting the degree of tension (rotation of the adjusting bolt), the nuts on the studs tighten too much. The tire is too rigidly fixed and cannot rotate when the adjusting bolt rotates.

As a result, the mechanism is damaged.

With such malfunctions, it is possible to replace the tensioner, provided that the attachment points are intact.


  • according to the requirements of the safety rules written in the operating instructions, it is necessary to start the saw with a fixed drive sprocket.

That is, in front of the engine factory, we retract the brake handle from ourselves. After you have started the saw before starting work, be sure to PUSH THE BRAKE HANDLE FOR YOURSELF. Thus, we release the drive sprocket and cock the braking mechanism. Do not disassemble and repair the brake mechanism yourself. As a rule, the mechanism spring is very stiff and is always under load.

In case of careless handling, it crashes. According to Murphy’s laws, the flight path of the spring and other parts is always directed to the face and eyes. After work, always clean from dirt and inspect the brake mechanism for defects in the brake band and mechanism.

If any are found, it is easier and more reliable to change the entire cover.

  • Before using the tensioner, do not tighten the nuts on the studs too much. Read how to properly tension the chain in our article “How to properly tension the chainsaw chain”
  • As you can see, the recommendations are very simple and uncomplicated in execution, but it is amazing how many users of the tool neglect them.

    Husqvarna 55 chainsaw repair

    Question: Husqvarna 55 chainsaw. Turnovers float and stall at idle. How are they regulated? There are two holes on the side with the letters L and H. But getting there is problematic.

    Answer: After opening the cylinder-piston group, the crankshaft bearings with oil seals (made at the same time) will necessarily change since the old ones cannot provide the necessary tightness.

    You obviously didn’t. Idle swim and no idle precisely because of the old
    seals (air leaks, depletion of the mixture and, as a result, complete destruction of the piston).

    Take the saw for repair.

    Believe me, repairing even such a simple-looking device as a chainsaw is not even a simple matter and without the necessary knowledge it is simply impossible.

    Question: In operation, the Husqvarna 55 chainsaw. Before you pull the starter cord, you need to press the decompression valve.

    Tell me, if I forget to press it, will something happen to the saw? Or nothing to worry about. And then a couple of times I caught myself on the fact that I forgot to press.

    Answer: effort, more load on the starter.

    The most likely malfunction in this regard is a break in the starter cord (not immediately, of course).

    Question: tell me whether it is possible to put a chain in increments of 3/8 on a Husqvarna 55 chainsaw. What model can the tire and the drive sprocket come from? A tire would preferably be 45 cm.

    Answer: If 3/8 ″ 1.5 mm. it will be a bit heavy. The alteration is not very complicated. on the 55th from the factory they put a profile asterisk, and then everyone goes to the ring one (where the asterisk is separate).

    So you just need to replace the asterisk in the set, 325 ″ by 3/8. I can be mistaken, but the set of the sprocket is “native” at 325 ″, and from Oregon. 29175X. An asterisk to them must be replaced by Huskvarnovskaya or Oregonovskaya.

    And the tire. I know for sure that they are produced with such a shank. But if you put a narrow 3/8 ″ 1.3 mm. I’m not sure that such a tire can be picked up.

    Question: The last time a saw started up, I pressed the gas and the saw died out.

    For the first time, the saw started from about the 20th “pulling” of the cord. Although maybe I’m just out of inexperience is not very jerked. How to be

    Answer: It is not entirely clear when the Husqvarna 55 chainsaw stalls: when it switches from idle mode to idle, or when you press the gas when it is already idling.

    If you start correctly and let it warm up for a few seconds before putting pressure on the gas. and it stalls anyway, then you need to adjust the carburetor, jet L.

    If you saw the original and good, then in such an adjustment there is no negative or tragedy.

    Question: After starting, does anyone have a feeling that the first few gas preparations are as if the saw is being locked? Then neatly 5 times you podgazuyu and everything becomes normal. I did not find about this in the instructions.

    Answer: This is normal, while the cold mixture drank poorly in the cylinder and a failure occurs, let it work at idle for a minute, warm up and everything will be fine.

    I don’t advise how to eliminate it, it’s not worth it, let it remain as it is, it’s true with all the saws.

    Question: I worked with a Husqvarna 55 saw and a problem arose. It starts easily and at first it works (5-7 minutes) without problems, but later the power drops at full throttle and eventually stalls.

    As if she lacks gasoline. As a result, I found out if everything is back to normal if you unscrew and tighten the gas tank plug, that is, a vacuum in the tank.

    Why? And how to fix it?

    Answer: Clean the breather.

    Question: Husqvarna 55 chainsaw. I cleaned the air filter and changed the fuel filter to no avail.

    The carburetor settings did not help, I have never climbed into the carburetor, can I find out in more detail where the mesh is?

    Answer: Remove the air filter mount, unscrew one bolt from the top of the carburetor, it is centered under the screwdriver, remove the cover (carefully laying) and the diaphragm and you will see a small round mesh or dirt on it.

    But personally, in such cases, I completely remove the carburetor, disassemble and blow it, then spray the carburetor cleaner, wait for 5 minutes and blow it again, but before that I tighten the adjustment screws and count how many revolutions I screwed one and the second screw (it’s better to write down).

    Then I completely unscrew them (this is when I disassemble the carburetor). Something like this, yes, if you remove the carburetor, fully check the impulse tube.

    Question: Recently I bought a Husqvarna 55 chainsaw. I burned 1 liter. 1st tank to idle, 2nd with the addition of gas for 3 \ 4.1 \ 2 revolutions for 4-5 seconds, after 5 minutes

    idling, as an experienced person advised.

    Immediately drew attention to the hard work of the engine! And in general, the symptoms are as follows: something prevents the crankshaft from rotating, when you start the starter, the engine twitches during operation.

    It stalls well, but with a strong metal creak.

    It starts up with me, but always right away, only on a hot one. Sawed a couple of thin, dry logs, sawing fine. But annoying her work, no matter what comes out.

    And he also noticed that when the sprocket rotates without a chain, it wedges a little, it is necessary to turn it through force, after which it rotates normally for some time. How to be

    Answer: Do not run the Husqvarna 55 chainsaw at idle.

    All running-in occurs only in work. The drum should move along the shaft, because of this there is a metal ring when the saw is idling.

    Resistance to crankshaft rotation is most likely compression. Try to turn out the candle and twitch without it (only the ignition must be turned off).

    The resistance will decrease sharply, it will remain literally a little noticeable when the magnetic shoe passes by the ignition module.

    If the resistance to rotation without a candle remains, something is not working. If the engine idles, it’s normal. Any two-stroke in this range works unevenly.

    If it doesn’t work at maximum speed. try replacing the spark plug. does it start to die (may cause interruptions in sparking).

    Clanking when the engine is stopped can also be. it’s their starter dogs that return to their places and rattle on the stops.

    It happens quite loudly.

    How do I repair a chainsaw with my own hands?

    Clanking sound and should be when moving from idle to working speed. clutch weights diverge and knock on the cup. And the cup is still clean, it rings loudly. Then it grows up with dust and oil, will be duller.

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      Tiny message texts:. repair motor saws own hands Motor saw it cannot be transferred to heavy devices. and still fix it motor saws it can take a lot of time. no repair instructions motor saws will not replace simple logic. all errors motor saw can be divided into two main groups. Engine errors Engine failures motor saw it often happens that it is their detection and correction, which takes the most time for users. Repair motor saws with your own hands, you must act with the exception. check all possible causes of the error, starting with those that can be checked and eliminated with less time. Ignition system motor saws. Manufacturers motor saw we recommend replacing the fuel filter every 3 months. Usually we fix it motor saw it does not work without cleaning the air filter, because the dirt is very fast. Carburetor is one of the most complex devices chainsaws therefore, continue to disassemble and clean, it is necessary with a full understanding of the responsibility for this operation. Carburetor motor saws. carburetor motor saws. carburetor motor saws. Carburetor disassembled motor saws If there is no experience and without self-confidence, carb repair motor saws it is better to trust an expert in a service center. The latter is possible motor saws it must be at least 8-9 atm (0.8-0.9 MPa). Chain lubrication system A rare repair manual motor saws relax without mentioning lubrication system malfunctions, which are quite common. Replacing worn parts Some parts chainsaws under normal wear, should be replaced after a certain working time. If you do not replace wear parts on time, excessive wear will adversely affect the remaining parts. motor saws……bus motor saws extremely worn in areas where cutting is most often done. this is the underside of the guide. For economical work chainsaws spend it all together. Read more:
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      Tiny message texts:. device motor saws A chainsaw chain includes three types of joints: cutting, driving, and joining. Such chains are commonly used in households. motor saw and high profile professionals. tires motor saws it is a chain guide. tires and chains, removable parts chainsaws so we call them headphones. Lubrication system motor saws. Chain brake motor saws You also probably realize that you are just touching moving chains motor saws enough to get a serious wound. Motor motor saws The most modern motor saw they have a single-cylinder two-stroke carburetor with engine cooling. (although in automatic mode there are "upper models" equipped with separate oil drums and mixing oils). To reduce engine weight in motor saws Install a plastic housing (not designed for long-term use). Air filter motor saws…… Air filter for motor saw works in special conditions. Beginner motor saws Most often there is a rope with a handle wound around a pulley. carburetor motor saws this is one of the most important components. the clutch motor saws All modern motor saws equipped with an automatic clutch. anti-vibration system motor saws Working motor saws creates vibrations that, when exposed for a long time, have a bad effect on health. Storage motor saws After completion of the work, it is necessary to prepare for the warehouse. details:
    3. How does the saw work? Relevance to the search query: 10.76%
      Tiny message texts:. how it works motor saw Installation of the tire and chain on motor saw. Drag the chain chainsaws turning the tensioning screw clockwise. the correct sprocket tension motor saw Requires a long saw head life, precision cutting and safety. motor saws fuel and chain oil. hold tight motor saw on earth when you start the engine.Motor saw equipped with automatic gas control. Disengage the inertia brake, raise motor saw and press the gas several times to feel how the saw reacts to gas. Start sawing around the tire area closer to the body motor saws. Additional information:
    4. Husqvarna sawing and launch (video) Degree of compliance with request: 8.71%
      Tiny message texts:. Device and launch motor saws Husqvarna (video) Purchasing motor saw Man is an important quality, reliability and ease of management. That’s all. motor saw Husqvarna. Comfortable, lightweight and versatile motor saw Husqvarna is suitable for any job. Thus, there are no problems with interruptions in work motor saws A combined damper controller is installed. What is special motor saws Husqvarna …… X-TORQ technology, which is a new, modern equipment technology motor saw. Thanks to this technology motor saw it can become universal in every sense. If in brief I will say then motor saw Husqvarna is. Read more:
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      Tiny message texts:. The right choice motor saws Before buying a specific model, indicate the scope of the tool so as not to overpay the purchase. For a one-time work in your country or home, the best option is the household motor saw. if you come motor saw in the first order, pay attention to exactly the same parameter. This is the only one of the main parameters motor saws…… Chains and tires motor saw there may be different types.chainsaw special narrow tires are the safest because they use low profile chains. Correct tool maintenance, accurate fuel mixture selection extends service life chainsaws and you will like your whole being. Read more: