If a chainsaw is not started. Caliber.

The chainsaw is not started? Reasons and solutions

Basils have long been a kind of innovation and even more so are not considered exclusively a professional tool, because today literally every owner has such a universal device in his tools. And although there is a huge variety of types and models of chainsaws, in general, their designs do not represent something particularly complicated. With the correct use and maintenance of this tool, any problems with its work arise quite rarely. But what to do if a chainsaw does not suddenly start? The main thing is not to panic and in order to figure out what is the reason for the problem.

First you need to check the fuel level. If it is not enough, it is necessary to correctly prepare the fuel mixture, which should include the proportion of gasoline/oil indicated in the operation instructions (the oil brand is also indicated in the instructions). To prepare the mixture, use AI-92 gasoline correctly-this will get rid of many unnecessary problems. The amount of the mixture should be designed for 1-2 weeks of the chainsaw, t.to. gasoline has a feature of losing its octane properties.

The tool may not start because during its launch flows a candle of ignition. If this is true, then to solve this problem, it is necessary to turn the flooded candle and be sure to dry it (without pumping), drain the fuel from the candle hole and make a half.hour break. Then install either dried or spare candle in place. It is also important to pay attention to the contact between the tip of the candle and the high.voltage wire.

The completely dry light of the ignition suggests that the fuel mixture does not occur, which means that there is a certain problem with the carburetor. First you should clean the fuel filter. If after eliminating all available pollution, nothing has changed, it is necessary to do a carburetor. However, it is better to entrust its disassembly and cleaning to specialists in this matter.

If there is a spark, but the chainsaws still do not start, you will need to additionally check the air filter and the saeph. Air filter is easily cleaned of dust. In order to check whether the sapphone has clogged for leveling the pressure in the gas tank, it is necessary to disconnect the fuel hose and see how the fuel flows from it. If the stream is normal. the saopant is in order if there is no fuel or it flows very slowly. you need to clean it.

New chainsaw will not start

Often a completely new chainsaw cannot be launched the first time. With a cold launch of its engine, the switch is installed so that the damper is closed. Now you need to pump up the fuel into the carburetor, and then twist the launch hand well. It is considered normal, even if after 2-5 launches the tool starts up, but stalls. After that, you can transfer the switch to the position of half.gas, and then to the working position, and continue to start a chainsaw.

The reason that after the winter period the chainsaw refuses to work, it may be elementary. the fuel mixture has decomposed and lost its properties. To eliminate this problem, it is necessary to pour the old fuel, unscrew and dry the spark plug, season the chainsaw with a new fuel mixture and abundant the engine several times. After installing the candle in place and in the absence of other problems, the chainsaw will necessarily start.

Structural components

All gasoline two.stroke engines have a similar principle of operation, and therefore the ignition system in them has a typical structure and device.

The ignition device of the chainsaw:

• Magneto: a device that converts the mechanical energy into an electrical energy, provides a current pulse to the lighting of the fuel of the chainsaw;
• Spend of the ignition: designed to ignite the fuel-air mixture through the category that occurs between the electrodes;

Candles are spark, arc, incandescent and catalytic. In the devices of the chainsaws, spark candles for 2-stroke engines are used. The schematic scheme of the chainsaw is shown in the image.

Ignition malfunctions

Most often we think about repair after the chainsaw stopped starting, or visual signs of serious breakdowns appeared.

Signs of ignition malfunction:

• The chainsaw is started, but it works unevenly (troit), often sneezes and shoots;
• The power of the chainsaw fell noticeably;
• With a sharp press on the accelerator, failures are observed in the operation of the engine;
• The chainsaw is poorly started on cold, very troit until it warms up;
• Fuel consumption has increased significantly;

If such flaws appeared in your chainsaw, then it is time to conduct diagnostics, adjustment, and possibly repairing the ignition system.

Determining the localization of a malfunction:

First of all, it is necessary to inspect the candle, if a lot of soot has accumulated on it, then the cause of the malfunction is most likely associated with the work of the carburetor, the piston group or the quality of the fuel. If visually the candle looks good, it does not throw it and it is dry. make sure there is a spark.

• Remove the candle, put the ignition cable on it;
• Using pliers with isolated handles, press the candle thread to the motor body;
• Sharply pull the starter handle and make sure there is a spark;

If there is no spark, we change the spark plug to a new one and test again. After making sure there is a spark, start the engine. But what to do, even if there is no spark on a good candle? We continue the search:

• Test an electric cable for a cliff and insufficient contact with the spark plug. We check the serviceability of the spring in the cap of the nursing and the presence of contact with the armored vehicle;

To check the serviceability of the wiring, it is best to use the tester.

You can set the right gap with a probe, they are not a deficit and are available for a small fee.

Diagnosis of a malfunction multimeter

It is possible to determine the malfunction of the ignition coil can be determined by the so.called hardware method. However, for this you must have a multimeter with which diagnostics is carried out.

Step.by.step diagnosis of ignition by multimeter:

• We set the multimeter to the position in which the arrow is at a mark of 200 Ohms.
• We study the instructions of the chainsaw. We find out the optimal resistance for the coil winding installed on our model (in most modern chainsaws this indicator ranges from 3-5 Ohms.);
• We connect the multimeter to the primary winding of the coil and measure the resistance, if it is normal. continue testing;
• We connect the multimeter to the secondary winding of the coil, compare the obtained readings with the operation manual;
• We connect the multimeter to the coil hole into which the wires are inserted. If the device gives normal indicators, we come to the conclusion that the coil is serviceable. If the measurement results are far from optimal, you will have to replace the node (coil) with a new one;

Step.by.step adjustment of the fuel of the chainsaw:

• Diagnose a malfunction;
• We dismantle the protective cover;
• Remove the module with a nursing and electric cable. We conduct their visual inspection, if necessary, replace with a new one;
• Install the ignition module, but do not tighten the mounting screws to the stop;

We determine a plot with a magnet on the flywheel;

Important: special attention, when repairing the ignition of a chainsaw, should be given to put the correct clearance between the module and the flywheel.

You should also check if the flywheel clings to the module counterweight. If this happens, perhaps you have failed a bearing or a backlash has formed on the shaft.

malfunctions of the chainsaws that can be eliminated with your own hands

Chainsaw is a very useful thing in the household. After all, a lot of tasks of home construction, gardening and landscaping of territories are quickly and relatively easily solved with her. Chainsaws are a sufficiently capricious tool, but with proper handling, this is an indispensable assistant. Who has one vulnerable place: guide tire. It is on it that most of the operational loads account. And this means that the knowledge about why tires more often than other parts of the chainsaws are out of order and how to correctly replace them with the case of necessity, will help you save money and time with seasonal or design work with an instrument.

In case of difficulties with the launch of a chainsaw, many immediately sin on the carburetor. In fact, there are several options and any reason for the malfunction can be any:

• Air and/or fuel filters are clogged. The problem is solved by cleaning filters.
• Lack of fuel in the tank. Yes, there is such a reason. some owners forget about such an insignificant detail as a gas station refueling and think that a pair of liters of gasoline will be enough for six months. In addition, fuel in the tank should not be stored for more than 14 days, t.to. gasoline evaporates and is lost octane number.
• Check the pipe from the fuel tank into the carburetor. it could clog or break, so gasoline does not enter the tank.
• No spark on the spark plug. Why there is no spark. there can be many reasons: there is no contact, you need to change the candle or it was flooded. Why floods the candle on a chainsaw is another question. But if this happens, it is required to dry and reinstall, then check the presence of a spark. If the candle has a strong fog, it is recommended to replace it.
• Check the muffler for the presence of soot. If there is a dozen, carefully clean the muffler, but it is still recommended to take the chainsaw to the service center so that the cylinder and the piston are checked there, t.to. Nar-a sure sign of improper operation of the elements of the cylinder-piston group.
• The carburetor clogged. How to properly adjust the chainsaw so that the carburetor worked well, is considered in a separate article.

If none of the above methods helped, then the reason is more serious-the breakdown of one of the nodes of the connecting rod piston group. In this case, it is recommended to take the chainsaw to the service center.

The engine stalls

The engine started, but at idle or at a load of a chainsaw stalls stalls. In this case, the same actions should be performed most often that described above.

How to adjust the chainsaw depends on when the problems begin:

Stalls immediately after launch:

• The fuel mixture is prepared incorrectly, there is too much oil in it, so the octane number of gasoline is less than it should be, so the chainsaw works only on the suction or immediately stalls.
• Feast on the spark plug or the wrong gap between the candle and the wire.

He stalls and does not work at idle:

• The muffler clogged. It is necessary to clean from soot.
• The settings of the carburetor were lost. It is required to adjust the idle on the chainsaw. It is performed using adjusting bolts that label L and H. How to adjust the idle passage, see the article about the adjustment of the carburetor.

Stalls at maximum speeds and works only on leaks

• Cut an air or fuel filter. You need to clean and check the seals.
• The saapun is clogged and because of this does not come fuel and the pumping of gasoline on the chainsaw does not work. Take the needle and carefully clean the bacon.
• Fault of the gasoline pump. Remove the pump and check if gasoline applies from it. If it oozes, replace the sealing gasket or the pump itself.

Basil does not saw under load and stalls

• The air filter is clogged. You need to get a filter, clean or even rinse, dry and install it back.
• Incorrect proportion. Drain the fuel and mix oil and gasoline in the correct proportion.

Service of the chainsaw

The maintenance of the chainsaw includes:

• Follow the quality of gasoline and oil, on the basis of which you prepare the fuel mixture. Adhere to the correct proportions in this case;
• Do not use fuel cooked more than two weeks ago. Check and clean the tanks for gasoline and oil regularly, otherwise the engine will stall or the saw will not start at all;
• Clean the air filter regularly. It has a simple device and this operation will not require much effort from you;
• Turn the tire every time after the next sharpening of the chain. so you extend the service life of the saw headset;
• Check and carefully clean the intake and exhaust oil openings, oil channel and groove on the saw tire. Remember that with a faulty automatic lubrication system, your saw will start or will stall;

Ivan Samoilov, 38 years old, Amur region

“My Chinese saw is poorly started, in general, we can say that it does not start, since it will immediately stall. I launch it by quite complex manipulations, it works and saws it for full gas for a full gas. However, after a short time it begins to sneeze and stalls. it is not possible to work. He picked himself for a long time, and then carried it to the workshop. It turned out to be Magneto. I would never have thought, I sinned everything on the carburetor.””

Ivan Vesnin, 33 years old, Solnechnogorsk district

“After winter, I decided to walk his chainsaw in the garden. Everything went well at once, it was possible to start it quickly, after warming up even one apple was cut, and then began to stall. Will work for 8-10 minutes and stalls. And not only under load, but also at idle. I was already scared. I decided that it was time to change the piston. And then I think: let me clean the sapun. I worked for an hour. it saws perfectly, it is gaining speed even and quickly, it starts up, what to stall. I have completely forgotten. These are childhood diseases.””

Yakov Baulov, 59 years old, Siberian Federal District

“After prolonged downtime (the whole winter did not approach her), the chainsaw began to stall at high speeds and with a sharp riding. It seems to begin to type, but when adding gas at some point it stalls. From the very beginning, she did not start very well, but adjusted the carburetor and seemed to get better. In short, I was looking for a malfunction for a very long time until I got into the gas tank and found that my chainsaw was not equipped with a fuel filter. there just sticks out the edge of the fuel line. This is a complete out. how could such an unit could release from the factory. Now fixed. I started working normally, it will no longer stall. Laughter and tears. where this world rolls.””

Why the chainsaw is not started

If defects occur, it is necessary to check the serviceability of the components.

If a new chainsaw is not started, you should check the presence and supply of fuel, the occurrence of a spark on the spark plug, the functioning of the exhaust valve, the condition of the filters. The work of a saloon stalling device built into the fuel cover of a stalling device.

The reason that the Chinese chainsaw is not started can be poor.quality equipment. It is possible to have various malfunctions, incorrect assembly. Some goods come to defective. If the inspection has not revealed malfunctions that can be eliminated independently, you can replace the saw on the warranty coupon.

On the cold

The reason why the device does not start on the cold is often a violation of the sequence of engine start.up.

You should familiarize yourself with the instructions: manufacturers indicate how to properly launch a chainsaw.

To enrich fuel, you should first close the air damper. After that, fuel suction is produced. For this, a special primer is used. Then turn on the ignition. Until the first outbreak of engine, several starter movements need to be made. The damper opens, the device is launched. If the sequence is violated, any step is missed, incorrect work is possible.

If the chainsaw has stopped starting, the probable reason is the problem with the fuel system. Non-varnishes with launch can occur due to an incorrectly adjusted carburetor, clogging of the highway and the fuel filter. The quality of fuel is also important. If the fuel is diluted with water, the device is poorly started or does not work at all. The mixture should be fresh.

A possible cause of problem launch is engine malfunction. Wear or breakdown of the part leads to undesirable consequences: reducing compression in cylinders and other troubles. It is recommended to contact specialists with such problems, since it is difficult to diagnose and fix the breakdown independently.

Hot

If the chainsaw is poorly started to be hot, you should start an inspection of the tool from the spark plug. It will also be required to check the spark on the candle.

So that the device works properly must be a dry candle. When it is wet, there are no sparks on the contacts. You can try to replace the part with a new.

If there is a spark and the candle is in good condition, try to look for a problem in the fuel system. If, upon visual inspection, it was not possible to detect the cause of the breakdown, the carburetor should be removed. If the amount of fuel exceeds the permissible, the device will not work. The candle should be wet. Should turn the candle hole down down. If the fuel mixture is pouring, the reason why the chainsaw is not started on hot, there will be an excess of fuel.

Why stalls the chainsaw

If the chainsaws start and stall, the reasons can be different. An external inspection should be carried out before attempts to fix the tool.

If the saw stalled during operation, you should check the presence of a mixture of oil with gasoline in the tank. If the fuel mixture is over, the device will not work. In those situations where gasoline still remained, the quality of the tool should be evaluated until the moment of is turned off. The occurrence of extraneous sounds and the subsequent sharp stop should alert.

The formation of soot on electrodes can also cause difficulties in the operation of the tool. Carefully inspect the device, clean if necessary.

When pressing gas

In cases where the chainsaw stalls when you press the gas, you should check the silencer and the fuel filter. A possible cause of problem is a violation of the tightness of the fuel hoses. In some cases, the addition of revolutions helps.

Sometimes checking all the details does not give a result, the tool is suffocating, zooiling when gas is added. If the device stalls when a person presses gas, it is possible to supply fuel in insufficient amount for normal operation. This phenomenon occurs due to clogging of the carburetor or filter.

Damage can occur due to clogging with air filter dust. When you give gas, the device stops working. Do not eliminate the problem yourself, since each model has individual characteristics.

Calling may cause failure or lack of lubrication on the chain of the chainsaw. If the circuit is dry, the channels should be cleaned through which the oil is supplied to the device tire. If the oil proceeds, the presence of cracks, defects on the pipes is noted, you need to treat them with sealant.

Under load

In situations where the device stalls at load, the problem can be with a gas tank or filters. Check the quality of the fuel and change the filter.

Often the saw does not gain momentum due to the fact that the mixture flooded in the gas tank has a low octane number. There is not enough power, sufficient heating does not work, the chainsaw stalls under load.

Often, malfunctions of the component parts lead to the fact that the device stalls under load. You should check for the presence of a sucker hoses, seals, gaskets. If the details are faulty, you can try to fix them or replace them.

In cases where the chainsaw is started and immediately stalls, the fuel is not enough, the device does not heat up. Turn the device. It is important to use a suitable mixture. Different types of fuel are better suited for different models. It is necessary to familiarize yourself with the instructions, recommendations, reviews of people whose device works normally.

At idle

In those situations where the chainsaw stalls at idle speeds, it is necessary to examine the state of the muffler. If the part is polluted, the spent gases are poorly displayed, the engine cannot continue to work, stops.

The saw stalls idle and in cases where the carburetor is incorrectly configured. It is better for beginners to fix the repair to specialists, since there is a chance of incorrect setup, because of which the tool will not be able to work. Tachometer is required to adjust the carburetor.

At high speeds

If the device stalls at high speeds, pay attention to the state of gasoline and air filters, the serviceability of the fuel hoses.

Polluted air filter can be washed under warm running water. It is important to thoroughly dry the part before installing it so that the water does not violate the serviceability of the tool.

If the liquid stops flowing through the fuel hose, it clogged. You can clean the part or replace with a new.

In cases where the saw stalls at large speeds, but the liquid flows through the hose, and the air filter is clean and working, look for the cause of the breakdown in the fuel filter. Install a new one in its place or clean.

In some cases, the problem is hidden in a gasoline pump. With the wear of the component part, the fuel begins to flow through the walls. If this phenomenon is noted, a new pump should be installed.

When tilted

If the saw does not develop speed when tilted, turns off, stops working, you need to check the fuel level in the tank. If it is not too high, the device is not supplied in an inclined position is not supplied with a sufficient amount of fuel, since the fuel tube is above the mixture level.

Pollution of the main filter elements of the chainsaw, adversely affect its work.

For example, a dirty air filter will provide air supply to the carburetor in full, which will affect the quality of the fuel mixture and normal engine start. Fuel filter pollution will make it difficult, or even reduce the supply of gasoline to the carburetor and make the engine to work impossible.

Reduced compression

As you know, for the normal launch of the chainsaw in its engine, compression should be present. It is necessary for the normal compression of the fuel mixture in the engine cylinder, it also affects the operation of the gasoline pump.

During the operation of the tool, the value of the compression indicator falls, and the chainsaw begins to start poorly.

The reasons for the lack of compression, or its decrease, can be natural, t.to. The engine wear out during operation. Problems can also be caused by serious breakdown, for example, Zadir CPG, or breakdown of a piston ring.

A sign of reduced compression is the weak resistance of the starter during the start. With reduced compression, a decrease in the power of the chainsaw is observed, which negatively affects its performance. The problem of replacing piston rings, or completely CPH, is eliminated.

Carburetor adjustment

Not correct adjustment of the carburetor will cause the chainsaw will not develop full power. It will be bad to start, or not start at all. The setting of the carburetor directly affects the quality of the fuel.air mixture, which is necessary for normal starting and further engine operation.

If the carburetor is improperly adjusted, the fuel with the air will be present more, or less gasoline than required, and the mixture will not be ignited even with normal sparking.

Excess gasoline in the mixture, it is customary to call overflow. Characteristic signs of overflow, it is a wet spark plug, after several unsuccessful attempts to start a chainsaw.

Spark plug

Spark plug is one of the main elements of the ignition system. On its electrodes, a spark is formed, and when this element fails, it will be difficult to start, or it is not at all possible.

The candle can completely refuse, or work with interruptions or give out a weak spark. Checking the candle is quite simple, for this you will need to unscrew it from the engine, attach to the cap of the high.voltage wire and, putting it on the cylinder, pull the starter. If the candle is in order, the spark will be powerful with a bluish tint. Weak spark with a reddish tint, a sign of a problem. A defective candle needs to be replaced.

Ignition coil

The reason that a new chainsaw is not started, or it starts poorly, may be a ignition coil. Modern chainsaws are equipped with electronic ignition coils. This part is not subject to repair, and, as a rule, in the presence of a defect, it completely changes.

Gap between the ignition coil and flywheel

An unbelievable gap between the flywheel and the contacts of the ignition coil affects the quality of sparking, which in turn is responsible for the normal start and stable engine operation.

The chainsaw is not started on hot

In cases where the chainsaws do not start hot, you need to conduct a visual inspection of all the main nodes of the chainsaw. Inspection should start with the spark plug. Check the spark, inspect the surface of the candle electrode, these actions will help establish the direction in which the problem should be sought.

Malfunctions in the ignition system

If, when examining a candle, it is found that it is wet and sparking on the contacts does not occur, this means that the problem should be sought in the ignition system, inspect the coil, check the gap between the flywheel and contacts of the coil. You can also check how tightly the cap of the high.voltage wire sits on the candle, and the candle itself. Try to replace it with a new.

Problems in the fuel system

If during the examination it was found that there is a spark, and the candle is dry, it means that the problems are in the fuel system. Its check should start with the fuel filter. Next, you need to inspect the fuel hose and its fastening to the carburetor, pay attention to, on the fuel leaks from the carburetor and the presence of gasoline in the air filter housing. It is advisable to start removing the carburetor only if the visual inspection did not allow determining the cause of the breakdown.

A characteristic feature of the problem in the fuel system is an excessive amount of fuel in the engine cylinder. As a rule, the signs of this are an overly wet spark plug and the presence of a spark on the contacts of the candle. In this situation, it is necessary to turn the chainsaw so that the candle hole is directed to the bottom. If gasoline will flow from the cylinder, then the reason that the chainsaw does not start, it is transferring fuel to the engine.

“Floods” with fuel, sometimes due to improper adjustment of the carburetor, or its malfunction.

The process of adjusting the carburetor can be found on the example of the Champion 254 saw, watching the video instructions.

Identification and elimination of chainsaw malfunctions

To determine the reason why when starting a chainsaw is not started or stall, it is necessary to defect the tool. The essence of the procedure is a sequential inspection of the state and operation of the main working elements of the saw engine.

• The presence of a spark on the spark plug;
• Fuel supply;
• The condition of the filters;
• The work of the sapuna built into the fuel cover of the stalling unit;
• The functioning of the graduation channel.

Spark check on the spark plug and elimination of the causes

The first stage in the search for the reasons why the gasoline saw is not started is checking the spark on the spark plug. There are many factors affecting the work of this element.

However, the main ones at the initial stage of tool defect are:

• Improper carburetor adjustment;
• The presence of more than the amount of oil in gasoline;
• Flowing the air filter.

All of them contribute to the formation of soot on the electrodes of the candle. In 50 cases out of 100, the saws are not bungled on the cold due to the lack of spark due to the deposits of soot on the electrodes and their corrosion.

As a result, there is either a decrease in the gap or its increase.

Checking the spark plug in non.working chainsaw

Checking the presence of a spark is quite simple. This will need:

• Remove the tip of the high.voltage wire;
• Unscrew the candle;
• Put on the tip back;
• Lean the candle with a skirt against the cylinder;
• Start the starter.

If a good spark is observed at the time of starting the chainsaw engine between the electrodes, then everything is in order with the ignition node. If it is not, then it is worth cleaning the element itself and checking the clearance of the electrodes.

If necessary, using a special probe, adjust the distance between the contacts.

In candles of different manufacturers, the distance between the electrodes may fluctuate. In some it may be 0.5 mm. Others have 0.2 mm. Therefore, carefully study the recommendations of the manufacturer.

Sparks on the spark plug may not be for other reasons. Of the main malfunctions affecting the poor launch of the chainsaw and unstable operation of the internal combustion engine at idle, from which the tool may stall, the following can be attributed:

• Overflow of the candle canal with fuel;
• Lack of contact between the high.voltage cradle and the tip of the candle;
• The failure of the ignition unit.

How to start a cold chainsaw if the candle channel is constantly filled with gasoline

To eliminate the problem during the start of the tool, you can use the following algorithm:

• Twist a candle with a special key;
• Wipe it with a clean and dry rag;
• Dry for 20 30 minutes;
• Remove the corpuscles with a file and adjust the gap between the electrodes;
• Drain the remaining fuel from the candle channel and dry it;
• Collect everything and try to start a mechanism.

As a rule, these measures are enough to start a chainsaw and perform work. However, this extreme measure does not eliminate the main reason why the engine does not start or stalls. the incorrect operation of the carburetor, which needs subtle adjustment.

In the case of the absence of a spark with poor contact of the high.voltage cradle with the tip of the candle, it is necessary to check the connection. Checking can be carried out using a regular tester.

If a defect is detected and it is eliminated, a chainsaw should start without any problems.

If the audit showed that the contact is reliable, and the saw does not continue to start, look for the cause in the ignition unit. As a rule, a faulty block of repair and restoration cannot be subject. It will require its complete replacement.

Determine the presence of fuel and its supply.

First you need to make sure that there is a fuel mixture in the tank of a chainsaw that does not want to start, and it regularly enters the carburetor.

With a full tank, we check how the mixture is supplied to the gas pipeline. Disconnect the pipe of the fuel system from the carburetor and try to swap.

In case of full order, when pumping, gasoline will be supplied with jerks in accordance with the norms specified by the manufacturer. Weak fuel supply or its absence can be a consequence:

Often the reason for the poor launch of the chainsaw may be too complete tank. In this case, it is worth paying attention to the presence of subtexts under the cover of the saw card.

If they are present, see the connection of the gas supply tube with the carburetor. Most often, it is squeezed out by pressure when twisting the cover of the tank, tucked under the neck, which prevents the engine from starting.

The quality of the fuel mixture can also become one of the reasons why the chainsaw is not started.

If after performing the work, do not drain the remnants of gasoline, and leave the tool for long-term storage (more than 2 weeks), then the processes of resounding and polymerization of the components will begin to occur inside the tank. What can cause a carbon for the piston, rings and a cylinder sleeve. Therefore, always before work, prepare the mixture only in the required amount.

Checking the state of fuel and air filters.

If everything is in order with fuel quality, the chainsaw engine may not be started, due to the clogging of fuel and air filters.

To diagnose these elements, you will need to make a number of manipulations associated with their dismantling.

With weak pressure or its absence in the pipe, the filter should be disconnected. Before that, free the tank from the mixture and remove the filter element itself.

Dismantling is carried out by means of a wire hook. The clogged replaced cartridge causing poor the gas station engine is to be cleaned, but it is best to change it to a new. When working as a tool in dusty conditions, cleaning should be done on a regular basis.

The clogging of the air filter can cause the unstable operation of the chainsaw engine, which is why it will stall or difficult to start.

What to do if the chainsaw does not start further

If the initial inspection did not give anything or the defects in the search process were eliminated, and the chainsaws are not started, then you need to look for more serious reasons. It is best to identify and eliminate such breakdowns in the service center.

However, in the presence of experience, you can find and eliminate them independently. What to diagnose and check?

In the first case, checking the compression in the cylinder will find out the condition of the cylinder.piston group (CPG) of the chainsaws that does not want to start on the cold. To do this, you need a compressometer.

The device is screwed into the spark plug and the engine is idle. The measurement of indications allows you to judge the state of the CPG. In the absence of a compressometer, it is possible to determine the compression in the cylinder as follows:

By putting a finger to the candle hole and twitching the starter, you can check the compression in the cylinder

If you feel that the finger is strongly drawn into the candle channel, then everything is in order with compression. Lack of discharge in the cell, indicates the presence of a malfunction. The cylinder.piston group needs a more detailed examination, which will give an idea of ​​the state of the piston and cylinder, piston rings and bearings.

You can’t start a chainsaw on a cold one due to the lack of compression in the engine crankcase. The main reason for this is the damage to the gasket placed between the cylinder and the crankcase.

It is quite easy to identify the lack of compression:

• Disconnect the upper tube from the carburetor;
• Pour gasoline into ordinary cork;
• We immerse in the fuel removed the tube;
• We pull the starter several times.

If the fuel from the lid is absorbed when the starter of the chainsaw is launched, then everything is in order with compression. If not, see the gasket.

If the fuel is drawn, then everything is in the strand. the gasket is the whole. Otherwise, you will have to purchase a reptile and replace.

How to do this watch the video, why the Chinese chainsaw is not started.

The launch of the tool can be complicated by the incorrect operation of the carburetor or its breakdown. It often happens that in the process of cutting, the fixing screws are weakened and the air sucks into the cylinder.

Check the reliability of the carburetor mounting. Inspect it for fuel leaks. The causes of the malfunction may be a mass. It is possible to accurately determine the malfunction, eliminate it and carry out subtle adjustment of the carburetor only in the service center.

The consequences of operation on a rich and poor mixture

Confirmation of normal, in a proportion of 16: 1, the quality of the air fuel mixture is the brown color of the insulator and the absence of traces of soot.

Condition of the air intake and muffler

The cause of the problem launch may be the filter of the air cleaner clogged with sawdust. If the engine starts with the air intake removed, special attention should be paid to cleaning the filter. A large amount of soil in the muffler is reflected in the power and thrust of the power unit, but the engine should be launched without much effort.

When the threaded fasteners are weakened, an air leak is formed, which leads to the depletion of the gas-air mixture and, accordingly, the deterioration of its working characteristics.

To replace the damaged gasket, it is recommended to use the repair kit, in its absence, you can make a gasket from the dinosaumalous material that is identical in thickness.

The consequences of filling

The element responsible for ignition of the fuel mixture is the candle. It consists of a case and central electrode. A side electrode is welded to the “skirt” of the details, which has an electrical connection with the “mass” of the car. Due to the presence of a ceramic insulator, the electrodes do not have contact with each other. The high voltage attached to the contact output of the candle leads to a break in the air gap. The spark slides between them.

The main condition for sparking is the lack of an electric bridge between the electrodes. If the candle is wet, then a chain that has low resistance is created. This leads to a sharp failure of the tension due to the leakage to the case.

If a chainsaw is not started after a long rotation of a manual starter, then there is a high probability of a candle bay. The wet candle is wiped with a clean rag and blown with air. It is not recommended to pump it on fire, t.to. This leads to the formation of microcracks on the insulator. After cleaning, the element performance is tested. If there is a spark, then it is installed in place and the engine is being started. In the event that there is no spark on the candle, then it is replaced with a working.

What to do

If the chainsaw engine does not start, and on the electrodes of the spark plugs there are traces of fuel and oil, it is necessary to establish the reason for their appearance. It will depend on this what needs to be done to eliminate it. If the fuel cast occur during the unit starts, then it is necessary to remove the fuel mixture accumulated in the engine crankcase. To do this, they turn the candle, the chainsaw is turned down with the cylinder down and the crankshaft is turned with a hand starter. Such manipulations need to be done at least 25-30 times.

After that, the removed part is installed in place and the engine is launched in accordance with the operating instructions. If interruptions occur during the operation of the unit, then this indicates a candle defect. Over time, the electrodes of the sparking device are burned, as a result of which the gap between them increases. This leads to the appearance of a weak spark that cannot ignite the fuel.

Uninterior fuel settles on the electrodes, and the sparking stops.

The gap adjustment is carried out using the probe. For two-stroke engines, the distance between the electrodes should be 0.7-0.9 mm. Splating contacts can occur due to an overly enriched mixture. This is disturbed by a violation of the carburetor adjustment or clogging of the air filter.

The setting of the device is carried out on a heated engine. Through rotation of the screws achieve the maximum possible resistant revolutions. If the owner of the carburetor is not carried out by the owner of the unit, then it is worth contacting a specialist.