Air filter for chainsaw with his hands

How to wash a chainsaw carburetor without disassembly

Cleaning the carburetor of a chainsaw of any modification, configuration and power takes place according to one traditional and correct scheme, and its necessity arises as a consequence of clogging the part. To understand that it is time to clean the carburetor. you can observe the way the saw starts up and immediately stops, perhaps still “puffs”, making a try to get the desired revolutions. Anyway. with your own hands to clean the carburetor. it is quite real, because our experts have presented instructions and demonstrated how to do it quickly and correctly. With regard to cleaning literacy, it is not only about using certain agents, fluids, but also the format of purging, assembling the carburetor back, as well as checking its readiness to perform future work.

Sometimes chainsaw parts do not need to be repaired and cleaned, but replaced in a timely manner. So while your carb can still be cleaned and return it to its original working condition. use the advice from KosiKosa, and let your machine be healthy!

How to clean the carburetor on a chainsaw with your own hands

Before you clean the carburetor on the chainsaw, let’s understand the situations when you need to clean it:

There are situations that cleaning the carburetor does not help, then it is necessary to replace the repair kit, if after this procedure nothing in the work of the chainsaw has changed. check the rubber adapter that are between the cylinder and the carburetor (in its place can be a rubber adapter with a brass insert). We remove the top cover, the filter, the long bolts, the adapter, disconnect the pipes from the carb and take it out. The cleaning process itself:

  • First clean the carburetor from external dirt and dust with a fluffy brush to prevent it from getting inside during disassembly;
  • start with the bolt “H”, which is responsible for the upper operating position of the carburetor, at maximum rpm. screw it in, counting and remembering the number of revolutions, for example 2.5. Next, unscrew it
  • screw in screw “L”, it is responsible for low revolutions. For example, 4.5 revolutions. Write down the indicators and twist it;
  • Remove the top and bottom cover with a screwdriver, unscrewing the bolts. It is better to do it not in the open air but on a hard non-slip surface;
  • take out needle;
  • If the gaskets and diaphragms are badly worn and frayed. they also need to be changed for new ones, and you can order carburetor repair kit for Husqvarna, Leader, STIHL or Partner saws in KosiKosa store;
  • you can often see the following picture before cleaning. there is a lot of dust and debris in the “sump” and other reservoirs;
  • clean carb, pre-wet it in solvent then blow it with compressed air using a compressor. Repeat the procedure 2 times. Separately clean the diaphragms and put them back together. First we put the needle back in place;
  • Install the rocker arm support back on the needle;
  • unscrew the spring and squeeze the fixing bolt;
  • Put the diaphragm in place, the bottom cap and screws (you need to remember or sign which ones fixed it);
  • put the top diaphragm with the cap also in place and bolt it down;
  • we put the screw “L” up to the stop and then unscrew it by 4.5 turns (as an example), as it consisted on the carburetor, and the screw “H” we also screw up to the stop and unscrew it by the same 2.5 turns (as an example), keeping the previous settings. This is necessary in order not to lose the settings;
  • put the carburetor back in its place in the chainsaw to check, putting on the throttle;
  • the hose that comes out of the cylinder. hang on top, the hose that comes out of the tank. on the right side of the carburetor, and the hose that goes to pump from the primer. on the left. connect all the hoses to the carb;
  • put the 2 bolts in the adapter and put it in place;
  • close the flap, press the primer several times (enough10);
  • try to start the tool.

As you can see, with your own hands to clean the carburetor of your tool is not at all difficult, if you follow the instructions, chronology, fix yourself the revolutions of the maximum and minimum screws, collect the unit exactly in the opposite order. KosiKosa power tool store also has a high quality video, where the whole instruction is vividly supported by a clear example.

Cleaning the chainsaw air filter

The instructions for any saw make cleaning the air filter element one of the procedures you must follow after each use.

Cleaning and putting the filter back in place

How to flush a chainsaw filter:

  • Unscrew the top cover. The right compartment is on top of the housing near the handle, regardless of brand, whether it is Husqvarna, Sturm, or Partner.
  • Take out the filter. it can be enclosed or screwed on.
  • Wash the foam filter with warm water and soap and dry it in the air. cleaning with gasoline shortens the filter life.
  • Paper, mesh, felt. can be shaken out by lightly tapping the edge against a hard surface. They are also well cleaned/blown with a compressor or vacuum cleaner.
  • All dirt in the space around the engine should be wiped off.
  • Install the chainsaw air filter in place, making sure that all grooves and parts fit snugly in place. Close the cover and tighten the screws.

If the filter begins to deform, becomes denser and thinner, or if holes and cuts appear, it must be replaced.

Changing the chainsaw fuel filter

Like all fuel-powered machinery. chainsaws have a fuel filter, it is located in the fuel compartment.

The number one symptom of a faulty fuel filter is that your chainsaw malfunctions when you accelerate.

How to change the filter on your chainsaw:

filter, chainsaw, hands
  • It is not necessary to drain the gasoline mixture when changing the filter element.
  • Take thick wire, bend the end like a hook.
  • Unscrew the fuel tank cap.
  • Dip the hook into the tank and hook the tube with the filter on the end. The tube is short enough, so don’t pull hard when removing the filter, it’s only long enough to do the replacement.
  • Hold the tube with one hand, pull the filter with the other and remove it from the port. insert a new one.
  • Check that the filter is firmly seated in the port. Dip the tube with the filter in the tank. When starting the engine the filter will drop to the proper position on the bottom.
filter, chainsaw, hands

Problems with chainsaw internals

If the fuel mixture is not a complaint, then you should move on to checking the starter. If you don’t get any complaints here, check the spark plug’s condition. You should unscrew the device and check the gap width, which for a perfect chainsaw engine should be 0.5 mm. Notice if the spark plug is dry or wet. If dry. look for the problem in the carburetor, which most likely turned out to be clogged and does not supply the fuel mixture into the combustion chamber. Remove the carburetor, gently wash and clean it. If the carburetor is functioning properly supplies fuel, but the engine chainsaw stubbornly does not start. look for the cause of the cylinder and piston group. It is necessary to dismantle the cylinder and look on its internal cavity looking for possible cracks and chips. If found, the cylinder should be replaced or sent for boring. After that pay attention to the condition of the piston o-rings and their grooves. They should be in such a condition that the piston doesn’t dangle inside the liner and provides the necessary level of compression.

Electrical equipment, lights, lighting

With all the desire to chain saw to the complex devices can not be attributed the simplicity of design acts as its distinguishing feature. But the chainsaw repair, however, can be time-consuming. The difficulty is not directly in the repair of the chainsaw with their own hands, but in the accurate diagnosis of the malfunction. One sign of malfunction can be caused by many things. Therefore, before disassembling the engine or carburetor, the symptoms of the malfunction should be well analyzed. No instructions on how to repair a chainsaw with your own hands can replace simple logic.

Types of chainsaws

A chainsaw is a tool that cuts through wood with a closed chain and is equipped with a two-stroke gasoline internal combustion engine. The chainsaw’s ability to work uninterruptedly for a certain amount of time is the main distinguishing feature that you should pay attention to.

The basic building blocks of a chainsaw are the chainsaw bar, the chain, and the gasoline engine, which drives the chain and the bar. According to the sphere of application and functionality chainsaws are divided into the following categories: professional, semi-professional and household amateur.

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Amateur chainsaws are used primarily in the home, for garden work in the countryside or on the dacha site. Such saws are very light by mass (3-4 kilograms without the chain and bars), compared to their own big brothers, their vibration is very low, which makes the work with this machine quite comfortable. Household chainsaws are primarily designed for short periods of use (about 5 hours a week), the motor power is small, but these disadvantages are compensated by the ease of operation. With the help of household chainsaws most often dachnikov do a little work. preparation, firewood, cutting garden trees and pruning branches.

With a semi-professional chainsaw you can easily perform a broader range of work. from repair work on your property to logging. The time of uninterrupted operation of such a saw is equal to 2-3 hours a day. The power of the gasoline engine in semi-professional units is increased. It is possible to achieve maximum productivity, to carry out felling of trees with medium and small trunk diameters. It is not uncommon for semi-professional chainsaws to be used for cutting knots. The only difference between these machines and professional ones is that it is impossible to use them continuously throughout the working day.

Professional chainsaws are mostly used in logging and industry. Professional chainsaws have the right engine power for cutting trees of all sizes and diameters. Such chainsaws are made of wear-resistant material and have a very strong chain, which allows to work uninterruptedly for 8-16 hours.

Chainsaw malfunctions

All chain saw breaks can be divided into two groups: engine failure with all its systems and components (fuel supply system, ignition, exhaust system, the cylinder-piston group) and other units (lubrication system, clutch, bar, chain brake).

Malfunctions of chainsaw engines are quite frequent, it is their correction and detection that takes most of the time for users. They boil down mainly to the following symptoms: engine won’t start, the engine starts but it throttles or runs erratically, the engine doesn’t develop power, i.e. it runs fine when idling but shuts down under load.

When carrying out STIHL chain saw repairs with your own hands you need to eliminate these problems one by one by examining all possible causes of the malfunction, starting with the ones that can be diagnosed and repaired in less time.

Ignition system

Almost all of the types of engine problems listed above can be caused by ignition system failures. If they occur, it is recommended to start troubleshooting with the spark plug. it is justified by the fact that its state will also provide useful information about the functioning of the fuel system. If malfunctions occur, unscrew the spark plug and inspect it.

When the spark plug is dry, the problem is most likely not the ignition system, but not getting the fuel mixture into the cylinder. You may screw the spark plug back in and tackle the fuel system. When the spark plug is spattered with fuel mixture, there is excessive fuel mixture. It could be caused by the carburetor being out of adjustment or by improper starting. Wipe and dry the spark plug by drying the cylinder, then cut off the fuel supply and work on the starter to remove the excessive fuel. Then reinsert the spark plug and restart.

Maybe in your case the petrol to oil ratio in the mixture is faulty, the carburetor is out of adjustment or poor quality oil is used. Rinse plug in petrol, clean it from sludge with a needle or awl, finely sand the electrodes and put it back. Even with the Goodluck chainsaw repair with your own hands, which consists in checking the spark plug, there is a big reason to believe that the faults are in the fuel system, it is necessary to check the spark plug for spark.

If there is no spark, simply replace the spark plug. Causes of the lack of spark can also be hidden in a failed ignition module or violations of the gap between the flywheel magnet and the flywheel. The gap should be equal to 0.2 millimeters. A gap violation is especially likely if you have disassembled the saw and removed the ignition module and flywheel beforehand. The gap should be set with the help of a gasket, which has a thickness of 0.2 millimeters, placed between the ignition module and the flywheel boss. The faulty ignition module must be replaced.

Fuel system

If it is determined by examining the spark plug that fuel is not flowing into the cylinder, then all of the following causes must be examined. If the fuel does not flow from the tank because the hole in the tank lid is clogged and a vacuum is created in the tank which prevents fuel leakage; fuel does not flow from the carburetor to the cylinder; the fuel filter in the tank is dirty.

Lack of fuel flow or lack of proper ratio between air and fuel that mixes in the carburetor is due to the following reasons: unadjusted carburetor, clogged air filter, clogged filter screen or carburetor passages.

Electrical equipment, lights, lighting

With all the desire, it will not be possible to attribute the chainsaw to complex devices the simplicity of design is its hallmark. But chainsaw repair can nevertheless be time-consuming. The difficulty lies not directly in the chainsaw repair with their own hands, but in the accurate diagnosis of the malfunction. One sign of inoperability can be caused by many things. Therefore, before disassembling the engine or carburetor, it is necessary to analyze the symptoms of malfunction. No instructions on how to repair the chainsaw by your own forces will not replace simple logic.

Types of chainsaws

A chainsaw is a tool that cuts wood with a closed chain and is equipped with a two-stroke internal combustion gasoline engine. The chainsaw’s ability to work uninterruptedly for a certain amount of time is the main distinguishing feature that you should pay attention to.

The main units of construction of a chainsaw are: a chainsaw bar, a chain and a gasoline engine, which drives the chain and the bar. According to the scope of application and functionality chainsaws are divided into the following categories: professional, semi-professional and domestic amateur.

Amateur chainsaws are mainly used in the home, for garden work in the countryside or in the country house. Such saws by weight are very light (3-4 kilograms without the chain and bar), compared to their own big brothers, their vibration is very low, which makes the work with this machine quite comfortable. Domestic chainsaws are primarily designed for short periods of use (about 5 hours per week), the motor power is small, but these disadvantages are compensated by the ease of operation. With the help of domestic chainsaws, most often the cottagers do a little work. cutting, firewood, cutting garden trees and pruning branches.

With a semi-professional chainsaw you can easily perform a broader range of work. from repair work on your property to logging. The continuous operation time of such a saw is equal to 2-3 hours a day. The power of the gasoline engine in semi-professional devices is increased. It is possible to achieve maximum productivity, to carry out the felling of trees with medium and small trunk diameters. It is not uncommon for semi-professional chainsaws to be used for cutting knots. The only difference between these machines and professional ones is that they cannot be used continuously throughout the working day.

Professional chainsaws are mostly used in logging and industry. Professional chainsaws have engine power for cutting trees of all sizes and diameters. Such chainsaws are made of wear-resistant material and have a particularly strong chain, which allows you to work uninterruptedly for 8-16 hours.

Chain saw malfunctions

All chain saw breaks are divided into two groups: malfunctions of the engine with all its systems and components (fuel supply system, ignition, exhaust system, the cylinder-piston group) and failures of other nodes (lubrication system, clutch, bar, chain brake).

The chain saw engine malfunctions quite often, and it is their correction and detection that takes users the most time. They can be summarized mainly in the following manifestations: the engine does not start, the engine starts, but it glitters or unstably works, the engine does not develop power, that is, it operates normally at idle, but under load it glitters.

When carrying out STIHL chain saw repairs with your own hands, you need to eliminate all possible causes of faults one by one, starting with those which will take less time to diagnose and repair.

The ignition system

Almost all of the types of engine problems that have been listed above can be caused by ignition system malfunction. If a malfunction occurs, it is advisable to start troubleshooting with the spark plug. This is also justified by the fact that its condition will also provide useful clues about the functioning of the fuel system. If a malfunction occurs, unscrew the spark plug and inspect it.

When the spark plug is dry, the problem is probably not with the ignition system, but with the fuel mixture not getting into the cylinder. You can screw the spark plug back in and take care of the fuel system. When the spark plug is spattered with fuel mixture, there is an overabundance of fuel. This can be caused by a malfunctioning carburetor or improper starting. Wipe and dry the spark plug by draining the cylinder, then turn off the fuel and work on the starter to remove the excess fuel. Then re-install the spark plug and restart.

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Maybe in your case the ratio between gasoline and oil in the mixture is wrong, the carburetor is not adjusted or low-quality oil is used. Wash the spark plug in gasoline, clean the carbon deposits with a needle or awl, finely sand the electrodes and install it in place. Even with the repair of chain saw Goodluck with his own hands, which consists in checking the spark plug, there is great reason to believe that the faults are in the fuel system, it is necessary to check the spark plug for the presence of spark.

If there is no spark, you simply need to replace the spark plug. The lack of spark can also be caused by a faulty ignition module or a gap between the flywheel and the magnet core. The distance should be 0.2 millimeters. A gap violation is especially likely if you have disassembled the saw and removed the ignition module and flywheel beforehand. The clearance must be adjusted with a 0.2 millimeter thick gasket placed between the ignition module and the flywheel boss. Faulty ignition module must be replaced.

Fuel system

If it has been determined by inspection of the spark plug that no fuel is flowing into the cylinder, you must consider all the causes of this. In particular: no fuel coming out of the tank due to clogged hole in the tank lid, which creates a vacuum in the tank that prevents fuel leakage; insufficient or no fuel coming out of carburetor into a cylinder; dirty fuel filter, which is installed in the tank.

Insufficient fuel supply or lack of correct ratio between air and fuel which are mixed in the carburetor is caused by: unadjusted carburetor, clogged air filter, clogged filter screen or carburetor passages.

Problems with chainsaw engine lubrication

If during the preparation of the fuel mixture you do not comply with the proportions, do not add oil or use a low-quality counterfeit substitute, the engine can overheat and completely fail. If you find deep scratches on the piston of the saw, you should immediately take a number of protective measures:

  • Drain poor-quality fuel and replace it with a properly formulated mixture that includes high octane gasoline;
  • Replace all defective and damaged parts;
  • Replace all gaskets, gaskets and seals;
  • Clean debris and dirt from the cooling system and air intake grill;
  • Clean the spark arrester screen.

Repair of a chainsaw carburetor with your own hands

To keep the carburetor in good working order for a long time, it is sufficient to carry out the following actions:

  • Gasoline and oil should be mixed in accordance with the numbers marked by the manufacturer.
  • It is not necessary to prepare the fuel composition in advance, since the properties of substances in the mixed state change. The exception applies to fuel for heavily used tools, but even here it is better not to store the composition for more than 7 days.
  • Use the oil that is specified for your chainsaw engine. The engine oil composition is not normal and will lead to malfunctions.
  • When preparing a fuel mixture, it is necessary to consider the influence of natural factors on its components.

How to Repair a Chainsaw Tire

All malfunctions of chain saws can be divided into two main groups: problems with 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

  • the engine does not start;
  • starts but stops;
  • rattles unstably;
  • does not develop power, t.е. It runs fine at idle, but stalls under load.

When carrying out repairs of a chainsaw with your own hands, it is necessary to act in the way of exclusion. Inspect all the possible causes of failure, starting with those for which check and fix it takes the least time (about the structure and operation of the two-stroke engine, see here).

Almost all the above-mentioned engine problems may be caused by ignition system malfunction. So when they occur, it makes sense to start troubleshooting with the spark plug. This is all the more justified as the condition of the latter can also give useful information on the operation of the fuel system. So, if you have a problem, you need to unscrew the plug and look at it.

The wire is disconnected and the spark plug is unscrewed with a special wrench.

If the spark plug is dry, it means that the problem is most likely not in the ignition system, but in the failure of the fuel mixture to enter the cylinder. You can screw the spark plug back in and take care of the fuel system. If the spark plug is heavily splashed with fuel mixture, too much fuel. This can occur from an improperly adjusted carburetor or improper starting. Wipe and dry the spark plug, dry the cylinder by cutting off the fuel supply and working with the starter. To ventilate the combustion chamber and remove excess fuel. Then reinsert the spark plug and repeat the start.

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

The oil to gasoline ratio in the mixture may be incorrect, the carburetor may not be adjusted, or low-quality oil may have been used. The spark plug is washed in petrol, cleaned from sludge with a needle or awl, the electrodes are finely sanded and refitted.

In all these cases it is not superfluous to check the gap between the electrodes. Depending on its brand, it must be in the range of 0.5-0.65 mm. It is also necessary to check the gasket of the spark plug. If it is worn or damaged, the combustion chamber can not be sealed, resulting in decreased compression in the cylinder and engine problems.

Even if, in the case of a spark plug check, there is good reason to believe the fault is in the fuel system, you should check the spark plug for spark. At least just to be sure there’s nothing wrong with it. For this purpose:

  • put the ignition cable on the spark plug;
  • Using pliers with insulated handles, put the thread or nut of the spark plug to the cylinder;
  • Pull the crank of the starter and see. Is there a spark or no spark.

READ Millions of Chainsaws Saw Wrongly From This. Top Tire and Chain Faults

If there’s no spark, just change the spark plug. If even a new spark plug has no spark, you need to check the high-voltage wire for breaks and contact with the spark plug.

The lack of spark can also be caused by a faulty ignition module or a gap between it and the flywheel magnet. It should equal 0.2mm. A gap gap is most likely to be present if the saw has been disassembled by removing the flywheel and the ignition module. The gap is adjusted with a 0 gasket.2 mm placed between the flywheel boss and the ignition module. Faulty ignition module must be replaced.

having checked the ignition system in this way and finding no malfunction, you can move on to the fuel mixture system.

If an inspection of the spark plug found that the fuel does not enter the cylinder, you need to consider all possible causes of this. It can be:

  • no fuel coming out of the tank due to a clogged hole in its cover (breather), with a vacuum created in the tank, preventing the flow of fuel;
  • contamination of the fuel filter installed in the tank;
  • no or insufficient flow of fuel mixture from the carburetor to the cylinder.

To diagnose the first two causes, it is sufficient to disconnect the fuel hose from the carburetor and see if the fuel flows out of it or not. If it flows in a full stream, the breather plug and filter need not be checked, if it does not flow or flows poorly, you can consider that the cause of malfunction has been found. The breather plug is cleaned with a needle. The fuel filter is removed through the fill hole of the emptied fuel tank, using a wire hook, along with the intake hose, from which the filter is disconnected and cleaned or replaced with a new. Chainsaw manufacturers recommend changing the fuel filter every 3 months.

Chainsaw tire repair

Chainsaw tire has a jammed sprocket and it would seem there is nothing left to do but throw away.

Chainsaw tire repair

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An insufficient flow of fuel mixture from the carburetor into the cylinder or a disturbance in the correct ratio of fuel and air mixed in the carburetor can occur for several reasons: due to a clogged air filter, an unadjusted carburetor, clogged carburetor channels, or a mesh-filter.

As a rule, the repair of chain saws can not do without cleaning the air filter, because he gets dirty quickly. When this happens, the air flow to the carburettor is reduced and the fuel mixture at the carburettor outlet is too enriched, which prevents normal engine operation. Dirt filter must be carefully removed for cleaning so that it does not get into the carburettor. The filter should be cleaned or washed in water with some detergent, dried and reinserted.

The carburetor is not properly regulated. This is usually done with three screws. Check the carburetor air pressure at maximum and minimum rpm and the idle speed control knob. Adjustment should be performed in strict accordance with instructions, failure to comply with which may lead to engine damage. Some saw manufacturers leave only one adjustment screw (idle speed). to prevent inexperienced users from tampering with the carburetor. For an example of adjusting a chainsaw carburetor, see Working with a Chainsaw.

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Fuel supply

In addition to the above-mentioned clogged breather, there may be other problems in the fuel supply. The main obstacles may be:

Fuel filter clogging. To check the unit for this malfunction, you need to disconnect the fuel hose and see how the fuel flows. If the jetting is weak, you may need to have the filter cleaned. The filter device is taken out through the tank filler port and cleaned, if the contamination is too severe, it is replaced.

Professionals recommend changing the filter every few months, regardless of contamination.

Shortage of fuel. In this case, several factors may be the problem. The first is a clogged air filter. The problem is that not enough air is being delivered to the carburetor, causing the engine to run poorly. The filter must be removed, cleaned, rinsed and dried, then put back in.

The second reason is an unadjusted carburetor. Her, t. е. Adjustment is carried out by three screws.

And the last reason is a problem with the diaphragm monolith or contamination of the carburetor ducts. As in other cases, it is necessary that the components were dry and clean.

How to properly adjust the carburetor on a chainsaw with your own hands

The factory settings of a chainsaw carburetor provide for optimum fuel and air intake parameters. But in the process of work they can be knocked down because of vibration. a shift of even ¼ of a turn at any of the screws can lead to a serious change in the parameters of preparation of the fuel-air mixture and it is necessary to adjust the carburetor of a chainsaw.

Adjustment of a chainsaw carburetor is made with three screws marked H (High), L (Low) and S. The last screw, depending on brand and manufacturer, may have other names, such as T or LA.

  • H: is responsible for the main jet and adjusts the maximum rpm.
  • L: adjusts the idle speed nozzle position and lets you adjust the RPM.
  • S/T/LA: to adjust the throttle speed of the engine.

To know how to properly adjust the carburetor on a chainsaw, you need a data sheet. it contains information about the angles of rotation of the adjusting screws. After that we proceed directly to the adjustment. By the way, you will need a chainsaw carburetor adjustment screwdriver or a regular flat screwdriver here:

  • Place the chainsaw on a flat surface, preferably a table or something similar. IMPORTANT: It is essential that the chainsaw is positioned so that the bar is facing in the opposite direction. The engine must be shut off.
  • Use a wrench or screwdriver to unscrew the housing cover fasteners and remove it to get to the carburetor.
  • Remove the air filter that covers the carburetor for the chainsaw. The manufacturer may install a foam cushioning insert on top of the carburetor. it must be removed as well.
  • Now begins the adjustment of the carburetor chainsaw. Screws L and H must be tightened all the way. Screw them slowly and carefully, so as not to break.
  • At about 1.5 turns unscrew both screws.
  • Start the engine and let it work for about 7-10 minutes to warm up well. a cold engine will not adjust the carburetor chainsaw.
  • After the engine has warmed up, set it to work at medium rpm.
  • Slowly turn the idle speed screw counterclockwise. Turn them slowly and carefully so as not to break them. If the engine starts to stall, continue adjusting the chainsaw carburetor and turn the screw clockwise a little bit at a time.

After the adjustment of the carburetor of a chainsaw of Chinese manufacture or any other, it is necessary to “drive” the engine at different rpm.

How to properly adjust the carburetor on a chainsaw with your own hands

The chainsaw carburettor is factory-set for optimum fuel and air intake. But in the process of work they can be dislodged because of vibration. a shift of even ¼ of a turn at any of the screws can lead to serious changes in the parameters of preparation of the air-fuel mixture and it is necessary to adjust the carburetor of a chainsaw.

There are three screws marked H (High), L (Low) and S for adjusting the chain saw carburettor. The last screw, depending on brand and manufacturer, may have other names, such as T or LA.

  • H: controls the master cylinder and maximum rpm.
  • L: adjusts the idle speed nozzle position and lets you set the RPM to low.
  • S/T/LA: to adjust the throttle speed of the engine.

To know how to properly adjust the carburetor on a chainsaw, you need a technical data sheet. it specifies the angles of rotation of the adjusting screws. After that we go directly to the adjustment. By the way, here you will need a screwdriver to adjust the carburetor chainsaw or an ordinary flat screwdriver:

  • Place the chainsaw on a flat surface, preferably a table or something similar. IMPORTANT: The chainsaw must be positioned so that the bar is directed in the opposite direction. The engine should be shut off.
  • Use a wrench or screwdriver to unscrew the housing cover and remove it to reach the carburetor.
  • Remove the air filter that covers the carburetor for the chainsaw. The manufacturer can install a shock-absorbing foam insert from the top of the carburetor. it must also be removed.
  • Now begins the adjustment of the chainsaw carburetor. The L and H screws should be tightened all the way. Tighten them slowly and carefully so as not to break.
  • At about 1.5 turns unscrew the two screws.
  • Start the engine and let him work for about 7-10 minutes, so he warmed up well. the cold engine to adjust the carburetor chainsaw will not work.
  • After the engine has warmed up, set it to run at medium rpm.
  • Slowly begin to turn the idle speed screw counterclockwise. Crank it until the engine is running smoothly. In case the engine starts to stall, you need to continue adjusting the chainsaw carburetor and return the screw clockwise little by little.

After made the adjustment of the carburetor chainsaw Chinese or any other, it is necessary to “drive” the engine at different speeds.

How to remove the carburetor from a chainsaw?

Or the engine does not start or immediately stalls, most likely the carburetor is clogged and needs cleaning. How to check the chainsaw carburetor? You have to dismantle it, there is no other way.

Before you clean the carburetor on a chainsaw, it is still recommended to check the other nodes: air and fuel filters, spark plug and muffler. It is possible that they are clogged. it is easier to clean the filter or replace the spark plug than to clean the carburetor on a chainsaw. By the way, it is a problem with the plugs that is the reason why the chainsaw shoots into the carburetor. too late ignition leads to an excess of fuel-air mixture, as it does not have time to burn completely.

In case the problem is not eliminated, it will be necessary to remove the carburettor. It’s very easy to do:

  • We remove the plastic back cover. it is held on the retainer or on the thread.
  • Remove the air filter.
  • Use a flathead screwdriver to pry up and remove the air rods. There may be two or three tie rods, depending on the model.
  • The carburetor is attached by two mounts. they are located diagonally. You have to unscrew them.
  • Disconnect the gasoline hose that supplies fuel to the carburetor from the gas tank.

Malfunctions of the Chinese chainsaw: an overview of popular and ways to solve them

It’s not that hard to buy a cheap chain saw made in China: there are a lot of chain saws from China on markets, in construction hypermarkets and online stores. But the low price almost always hides poor quality.

The most popular faults of Chinese chainsaws should include:

  • Poor lubrication system. Oil passages that are blocked should be cleaned or the oil pump should be replaced if it is defective.
  • The starter cord breaks.
  • Breakage of the plastic starter shaft. To replace it, a normal metal bolt will do.

If there is the slightest suspicion of improper operation of the chainsaw, it is worthwhile to perform a complete diagnosis of the tool immediately. Only with proper use and timely maintenance can you count on a long chain saw’s longevity.

Recommendations for use

To increase the life of the tool, you need to follow some rules. This applies first and foremost to the chain and guide bar. It is recommended that the chain be changed every three hours and that the guides be turned 180 degrees. As a result, these elements will wear evenly, which will extend the life of the entire tool.

It is important to keep the chain saw clean at all times while working. Sawing wood quickly becomes clogged with sawdust that needs to be removed in time. Dirty orifice plates can cause fuel system malfunctions. It is also important to replace oil and other consumables in time.