Stihl 180 won't start. What to do if you can't start your chainsaw? Fuel system check

The light and compact model of the tool is used for domestic purposes, but, despite the optimized performance, sometimes the Stihl chainsaw does not start. Problems manifest themselves in the fact that the engine turns on and stalls, is unstable, cannot develop the required power, or suddenly gains high speed.

Why the Stihl chainsaw does not start

For a preliminary diagnosis of the causes, the operation of the fuel pump is checked, appearance spark plugs, fuel flow, carburetor functionality and filter condition. Pay attention to the performance of cylinders, pistons, muffler, crankshaft bearings. After preventive measures trying to start the chainsaw. Insufficient lubrication of rubbing parts also becomes a factor in poor performance.

No spark

Checking for spark at the spark plug. Various factors affect the functioning of the element. When testing the mechanism, the reasons are revealed:

insufficient adjustment of the carburetor;
large oil in gasoline;
clogged fuel and air filters.

Due to work in such conditions, soot accumulates on the contacts of the candle. Subsequent corrosion of the conductors causes no spark in half of the faults. This is because the gap between the modular contacts changes. To check for spark, do the following:

the tip of the high-voltage cable is removed;
the candle is unscrewed;
the tip is put in place;
the candle is leaned with the wide end against the cylinder;
start the starter.

If at start-up a bright spark appears between the electrodes, resembling lightning, then the ignition unit is working. In the absence of a flash, they clean the entire element and set the gap between the conductors. Sometimes there is no gap between the flywheel and the ignition coil. When the flywheel is rubbed, scratches are visible on its exterior.

Ignition coil failure

The module or coil is not disassembled and its suitability is difficult to determine without testing fixtures. Modern systems plugs are strong, light and small in size. They are characterized by almost trouble-free functionality. Problems with a chainsaw malfunctioning due to an ignition coil can be fixed on your own.

Test the outgoing wires for damage (including internal ones) that occur due to vibration leading to friction. If no cracks are found, then the ignition coil needs to be replaced. Sometimes a module malfunction is indicated by a weak, barely perceptible flash when the saw heats up. This is due to an increase in the temperature of the coil, which leads to an increase in the resistance of the transistor.

The peculiarity is that at the beginning of work a spark may appear, but after prolonged use it becomes dull and disappears. Modern ignition coils are not repaired in a home workshop, therefore they are replaced with suitable elements.

Fuel supply

After unscrewing the candle, a wet coating is found on its surface. This indicates an excessive supply of gasoline to the combustion chamber. For this reason, the tool does not work or stalls, because the fuel does not ignite.

Another inhibitory factor is the clogging of the breather - a small hole in the gas tank cap. It is cleaned with a needle, otherwise the Stihl MS 180 chainsaw will not start. To determine the incorrect fuel supply, sequential actions are carried out:

remove the candle;
2 cubes of gasoline are poured into the hole of the candle with a syringe;
put the ignition device in place and put on the cap of the high-voltage wire;
the lever is moved to the hot start position;
pull the starter handle a couple of times.

If the tool starts and immediately stalls, then the fuel line is tested further. Check the gasoline filter, the splash from the crankcase, the integrity of the baffle in the pump when the cap is unscrewed.

Crankshaft bearing failure

If the bearings are defective, a slight play is felt. To identify it, the flywheel of the Stihl MS 180 saw is staggered from one side to the other. The movement indicates that the flywheel is shifted towards the electrodes by its own magnets, as a result of which there is no spark. To remove the mechanism, the cutting element is dismantled, the filter cover and clutch are removed. For the crankshaft stopper, remove the manual starter cover and tighten the two bolts.

The clutch is unscrewed with a key clockwise. They remove the drum with an asterisk, change the old clutch and twist it all the way. The crankshaft is stopped so as not to break the starter. The mechanism is assembled in the reverse order. To tighten the brake handle is tilted forward, the tool is started, then removed from the brake.

Less often, defective bearings are detected (the diameter of the holes in the cage is increased). To determine, disassemble and measure with a micrometer. Regular knocking indicates broken bearings. In this case, urgent repairs are required, because if the integrity of the crankshaft is violated, the piston group and cylinder will fail.

Fills the spark plug

In this case, the spark is not able to ignite the fuel, which in in large numbers enters the furnace for combustion of the combustible mixture. If it fills the candle, then the carburetor is faulty or the cold engine does not start correctly. The engine is purged, the procedure is performed with the ignition off and away from open flame. To ensure the ignition of the fuel at the time of launch, clean the mechanism:

unscrew the candle, wipe dry, dry for half an hour;
a large layer of soot is removed with a needle file;
adjust the gap between the contacts;
the tool is turned upside down and gasoline is drained;
in this position, the starter is pulled several times (to remove fuel residues);
reassemble in reverse order.

Chainsaw Stihl stalls: reasons

If the tool turns off immediately after starting, it means that some device or part has failed. To determine the cause, the mechanism is tested independently or in service workshops. Sometimes the reason that the mechanism does not start well is improper maintenance of the saw:

insufficient amount of gasoline;
poorly prepared fuel mixture;
poor quality lubricant;
muffler clogged with combustion products;
unadjusted carburetor;
obstruction of the air filter;
piston or cylinder failure.

When you press on the gas

Sawing units are idling, but the chainsaw stalls when the gas is pressed, as the load increases. The tool is heated before use by running the engine at idle for a minute. If this is neglected, then the motor stops after pressing the pedal. Other reasons may be:

clogged or unadjusted combustible fuel mixing unit;
downtrodden air filter does not provide the desired air flow with increasing load;
a dirty gasoline filter does not allow the required amount of the mixture to pass through;
the cylinder wall and piston rub.

Low octane fuel causes a brake, because this circumstance prevents the engine from reaching the required power when the load increases.

At idle

Violation of the functionality of the fuel unit system leads to air leakage. In this case, the unit stalls at idle and does not hold their number. Additional suction reduces the air impulse to fuel pump and passes through the sump membrane or crankshaft seals. Diagnosis is made with a vacuum gauge.

The shutdown of the engine on a cold occurs for other reasons:

the candle channel contains an excess amount of combustible mixture;
between the tip of the candle and the high-voltage cradle the gap is not adjusted;
power supply failure.

The seals are checked by pouring gasoline into the crankcase, the leakage is visible visually. This means that the engine does not idle, and at high frequency, leaky seals will lead to jamming of the bearings. In case of leaking elements, they are replaced with new ones and sealed.

At full speed

Sometimes the engine stalls after normal operation. To determine the cause, pay attention to the accompanying circumstances:

The motor stalls in the middle of work for no apparent reason. The starter is in a stationary position and does not turn. This means that the tool is jammed and requires urgent repair.
During normal operation for a short time power is reduced and the engine stops, the cylinders are overheated. The situation indicates the occurrence of air suction under the rubber pipe between the carburetor cylinder, possibly due to a gap. The air depletes the fuel, the pipe needs to be replaced.

Not gaining momentum

Many mechanisms of the mechanism are involved in the launch, so the loss of speed of the Stihl chainsaw after idling can be the result of various factors. Confident idling and interruptions in the motor under load can occur for the following reasons:

development of an engine resource;
wear, deformation and corrosion of the piston group;
faulty ignition coil or spark plug;
unbalanced carburetor screws.

If the tool does not develop speed, then the conductivity of the hole in the fuel tank cap is broken. The creation of a vacuum does not the right amount fuel, because the engine does not gain the required power. Turnovers decrease with the accumulation of carbon monoxide in the muffler, the removal of gases from combustion is difficult.

Doesn't slow down

The tool quickly reaches the maximum speed, and the power does not decrease. This situation is explained by the fact that:

the throttle valve does not work due to the weakening of the spring or the traction element;
the switching toggle switch periodically fails;
no corkscrew on the throttle axis;
clogged carburetor;
the fuel hose and gasoline filter are not functioning properly.

What to do

The power tool is operated according to the manufacturer's instructions. Only after checking the chain tension, the unit starts. At the same time, the filling of the tanks with a combustible mixture and oil is controlled, the device is securely fixed in the hands. If, when all the rules are followed, the mechanism refuses to work, then it is performed.

How to start a Stihl chainsaw: instructions

The manufacturer of the tool has taken all measures and has developed a manual, thanks to which the mechanism is conveniently started. The user will protect himself from injury if he performs the suggested frequency of actions:

The ignition is turned on, and the engine handle is placed in the down position. The intake of the atmosphere from the air filter is blocked by the carburetor damper. To properly start the chainsaw, the throttle diaphragm must be open to enrich the combustible mixture.
The lever is set to the start gas position. The starter jerks several times until the first spark appears. If the flash passes, then the tool is ready to start. The mechanism works at high speeds due to the closed throttle membrane. To transfer it to the idling regulation, the gas trigger is pressed and the rhinestone is released. The number of revolutions quickly normalizes.
On the Stihl MS unit, standard equipment is not provided accessories to the light version.

Idle adjustment

Before adjustment, carry out Maintenance tool. In order for the idle speed adjustment to be effective, preventive maintenance is done:

carburetor cleaning;
washing the engine;
cleaning the air filter;
warming up the motor.

To adjust the operation of the mechanism at idle, use the appropriate adjusting screw. Its rotation depends on the desired setting:

With standard adjustment, the screw is turned counterclockwise until it turns tightly. After that, make 2 circles in the direction of the arrow.
If the saw is running at low speed, then the screw is turned clockwise until the chain begins to move. Then make a half circle in the opposite direction.
At high frequency, the regulator is wrapped against the clock until the circuit stops. After that, the rotation is continued for another half turn in the same direction.

It will not work to adjust idle operation if there is air leakage into the engine through a gasket, acceleration pump, oil seals, or for another reason.

Ignition setting

Gasoline engines are equipped with an ignition system that ignites the fuel. The time the flash occurs affects the operation of the motor. In mass production at the factory, the ignition of the chainsaw is not adjusted. Marks are placed on the corresponding rotating elements, which are combined during adjustment. Incorrect adjustment leads to the fact that the mechanism starts and stalls.

Before adjustment, check the dryness of the candle and the performance of the ignition circuit. The voltage supply cable to the candle is brought to the cylinder with a small gap and the starter is started. In the absence of a flash, test the cable with a probe. Then check the health of the wire to the shutdown button.

If the cables are not damaged, then check the ignition coil. This is done by a special tester to ring the device. In this case, the indicators on the device must match the technical characteristics of the coil, which are prescribed in the instructions for use. If inconsistencies are found, then the ignition unit is changed to a workable device.

The coil can become unusable from vibration when the tool is dropped or hit, so you need to work carefully.

Replacing crankshaft bearings

To begin with, compression is measured, if it is not there, then the reason lies in the breakdown of the piston group.

The required pressure in the cylinder should be 8 atm, if it is lower, then the cylinder and piston, rings, crankshaft bearings may have worn out.

To find out the condition of the piston system, you need to completely disassemble the saw and remove all the main components of the mechanism.

The MC 180 chainsaw does not start. Washed the candle with acetone, sanded with fine sandpaper. Several months not used, benz oil remained in the tank, but it had previously started from the 50th time. Tell me where to look and what to do. Also, please send a repair manual if available.

Because you had gasoline left in the tank, then you need to clean the carburetor by 80 percent - this is the first. Secondly, the saw starts if fuel is supplied to the cylinder, there is a spark and compression. The lack of fuel supply can be seen by a dry candle (we disassemble and clean the carburetor, change the fuel filter, clean the impulse channel). If there is no spark, then change the candle, if the replacement did not help, then you need to change the magneto. If there is no compression, then it is necessary to change the piston, cylinder and seals. I advise you to start by removing the muffler and look at the condition of the piston (there are scuffs on the piston or not).

I have had exactly the same saw for three years now, it has been working properly and starts normally. If it has started like this before, change the spark plug, you came across with a low-quality spark plug. Do not save on candles, take a branded one from the catalog. Good luck.

This, at your request, is an instruction for starting the saw, but about what you can sin if the saw didn’t start well, and now it doesn’t start at all - most likely the ringlets have already come to an end and there is no compression, which is why, if it starts by a miracle, having worked, it will heat up the piston, reducing the clearance, and then it will work normally. Needs to be repaired! It is not necessary to change the rings, the piston.

The second option - if the chainsaw, according to the norm, should not yet be so worked out that there is no compression, then the point is in the carburetor settings, you need to clean and adjust the carburetor, then what are you doing there sandpaper a rubbed candle will not bring much benefit!

I almost forgot that a chainsaw can start badly if a lot of oil is poured into gasoline, or oil Low quality oil mixed with gasoline is special, not ordinary motor oil!

Therefore, advice - if you yourself are not afraid, you need to climb on the Internet and find information on repairing a piston and setting up a carburetor, if it’s scary it means taking it to a service, I’ll say that it’s okay to disassemble and repair a chainsaw, and spare parts in special stores are in bulk for all models, and full of online stores!

If the saw was with gasoline for a long time, but did not start, then pour out the old gasoline from the tank and pour in a new one, the saw will not start very quickly the first time, and then it will start working normally. If the candle is normal, then do not forget to check the spark, otherwise it is clean, but it is useless. Next, clean the air filter or replace it with a new one and Special attention it is necessary to give such an inconspicuous crack, which must always be clean, otherwise the saw will start with great difficulty, I marked this place with an arrow

Well, it’s not at all superfluous to check the gasoline filter that is in the tank, pull it out and clean it if it is dirty. If these measures do not help, then you will have to carry Calm to a specialist, which means something serious has happened.

If it has previously been started from the fiftieth time, then it is worth giving it to the service, since maintenance of all systems is necessary. But the company and model are not bad. That is, cleaning the carburetor itself, and checking the condition of the pistons and rings. If, for example, oil is thrown into the combustion chamber, then, as you understand, there is nothing good in this. The fact is that the gasoline engine of a chainsaw is not much different from car engine, and if it does not start, then its bulkhead is required, in the worst case.

I have a Shtil-250, old man, there was a problem: it starts up cold without problems, you start it up hot, until you burn the unburned mixture through the muffler. I installed a new spark plug, washed and cleaned the filter, washed the carburetor too. Still the problem remains, tell me, please, how to solve it?

Paul

Silencer check

Most likely, the reason lies in the muffler, which is clogged with combustion products (deposits) or just debris. It is enough to clean it, and the normal operation of the chainsaw will be restored. To do this, this part is best dismantled and washed using ordinary detergents(can be aggressive). Then rinse the muffler thoroughly clean water and dry with a hair dryer.

Cleaning the muffler usually has a positive effect.

When cleaning, be careful: soot contains carcinogens, which, if inhaled, can be harmful to health. The reason for the appearance of soot is the wrong ratio of gasoline and oil poured into the tank. Most users prefer to do it "by eye". But it’s not difficult to keep the exact proportions: it’s enough to use a disposable syringe without a needle of the appropriate volume.

Other reasons

Here, first of all, we mean the wear of the cylinder, piston, rings, as well as the crankshaft bearings. The unsuitability of these elements ultimately leads to a drop in compression (pressure) in the cylinder. You can check the condition of the CPG along the way when you remove the muffler. After dismantling this part, a window will open for you through which part of the cylinder is visible. If it shows scuffs or scratches, then it will have to be changed.

Repair parts can be purchased at specialty stores or on the Internet.

Next you need to check the compression. With absence special device unscrew the spark plug, plug the hole with your finger and pull the starter cord. At good pressure the finger will be sucked in. If there is a compression gauge, but it must be inserted into the spark plug hole. Also turn the crankshaft through the starter and look at the instrument readings. The normal parameter is 8-9 kgf / sq. cm (which corresponds to 0.8-0.9 MPa). The reason for low compression may not necessarily be in a worn cylinder or piston: sometimes it is enough to replace coked rings.

To date, the manufacturer Stihl occupies a leading position among other companies that manufacture the production of equipment intended for agricultural and construction works. The products of this manufacturer are famous not only for their high level quality, but also optimal pricing policy and power of its models.

It is probably quite difficult to meet a person who would not have a chainsaw of this brand. This is one of the most famous companies in the world. But the fact that out of ten possible six people definitely have them. And this is not surprising, since Stihl chainsaws represent power along with graceful design. But unfortunately, such giants of technology sometimes fail and require some kind of repair. Today we will pay attention to one of the moles of this manufacturer, namely the Stihl ms 180 chainsaw. ABOUT chainsaw stihl ms 660 read . So let's get started.

Briefly about the main

This model is a pride German manufacturer and is a direct tool designed for a minor level of work. It can be used for no more than twenty hours a month. This wonderful device will easily help you manage your garden care, prepare firewood for winter period time (see how to cut a tree), produce cleared areas, and there will also be indispensable assistant in other areas, let's say, simple manipulations.

To facilitate physical labor, mankind has come up with working tools. They serve to influence objects and materials. Exist mechanical tools and those that are driven by pneumatic, hydraulic actuators, fuel energy or electricity. Tools are used in construction and for small repair work at home. One of the most popular tools is the chainsaw. It is a reliable tool that can be used for sawing and shaping hard objects and materials. But the chainsaw does not always work properly. This article will consider cases in which new chainsaw refuses to work, the causes of this problem and how to fix it.

New chainsaw won't start

By purchasing new tool you count on its quality. Unfortunately, not every tool meets the working requirements.

Important! Savings on fuel materials will lead to serious losses during the repair of the piston group. Purchase only high-quality fuel and oil, which is indicated in the instruction manual to avoid breakdowns.

Causes

In general, there should be no problems with new equipment, since all its parts and elements are in perfect factory condition and have not been used by anyone before you.

First And main reason starting problems - you do not follow the operating instructions. If the instructions are followed, the problem may lie in the oil-gasoline mixture that you prepared in the wrong proportions. Third the reason why you cannot start a new tool is a technical malfunction or a manufacturing defect.

Solutions

Before contacting the store for a return, carefully read the instructions. Make sure all instructions are followed step by step. If you did everything right, and the tool still does not work, check if you have filled the tank with good oil and gasoline. To lubricate and power the chain tool, quality products from the manufacturer. Don't skimp on it.

If you have followed all the requirements of the instructions, and the saw still does not work, contact the store. You need to have with you warranty card and original packaging. In the store, you will be issued a return for low-quality products or replace it with a similar one, or return the money spent. If the warranty and packaging are lost, they will not refund you, so contact service center. Do not attempt to disassemble the tool and identify the problem yourself. Coming in working condition, it may fail and injure you. Take your chainsaw to a mechanic who will inspect it and repair it if necessary.

Did you know? Saw-like tools are found during excavations of ancient settlements. Their estimated age dates back to the 7th-3rd millennium BC.

The chainsaw does not work: causes and solutions

During operation, the components and headset of saws are subjected to significant stress, which means they wear out. Therefore, a tool that most recently worked refuses to run. To understand the cause of the breakdown, you need to know the reasons that affect the operation of the tool more often than others.

Fuel

A special oil-gasoline mixture is prepared manually by the owner of the instrument, therefore inaccuracies are possible here. The desire to save on fuel has a bad effect on the tool up to its complete inoperability. To keep things running smoothly, make sure you use high quality gasoline and the oil specified in the manual. A properly formulated mixture can be stored in ready-made no longer than two weeks.

Gasoline fuel loses its properties in the third week and your instrument will not be able to power normally. Chinese-made chain saws are especially sensitive to the quality of the mixture. Sometimes you have to sort through several different oils before achieving a smooth and high-quality stroke.

Spark plug

This reason is easy to determine. If the spark plug fails, the device starts and immediately stops working. A malfunction of this element leads to the accumulation of the fuel mixture on the electrodes and the growth of soot on them. To get rid of this problem, remove this element, remove carbon deposits with a needle file, turn it out and wait half an hour until it dries. Drain the rest of the mixture, put the candle in place and you can continue to work.

If this element is dry, its malfunction lies in the large distance between the tip and the wire that gives the spark. Check spark: remove the tip, remove the candle, put the tip in place, put the candle so that it touches the cylinder with the skirt. Perform a launch. If the spark is visible and it is large, the problem is not in the candle. If the spark is weak, reduce the distance between the electrodes using a special probe.

Important! A very part of the saw does not start due to the accumulation of the fuel mixture between the electrodes on the candle. You can fix this problem yourself. Simply clean the electrode tip of carbon and fuel. After this procedure, the tool should start.

Filters

Filters tend to get clogged and lose throughput . To check the fuel filter, disconnect the fuel hose from the carburetor and pump up the gasoline mixture. If it flows evenly, the filter is fine. If it begins to drip or flow in a thin stream, the filter is clogged. It's practically useless to clean it.

It is better to replace the cartridge with a new one. As for the air filter, it gets clogged if you cut something very fragile or dusty. Take out this element very carefully so that the rubbish that has settled on it does not get into the carburetor. Rinse, clean and dry after removing, then carefully replace.

Muffler

This element of the device is often overgrown with resinous deposits, which accumulate on it during the combustion of the fuel mixture. At the same time, the power of the revolutions drops, sometimes to the point of complete inoperability. To clean the exhaust port and muffler, remove them, remove the cooler and seal from the body, disassemble the spark arrester and resonator. Wash all elements removed from the housing in warm soapy water, dry and reassemble.

Dry cleaning of this element is unacceptable, as substances harmful to human health accumulate on it.

Did you know? From time immemorial, these tools have been made of stone. Only the ancient Scandinavian peoples began to cast them from metal alloys. Saws were used as military weapons, but they did not receive much distribution, since they were significantly inferior to axes in strength.

Hoses and connections

These elements of the device quickly fray and wear out, as they are flexible and transport the fuel mixture. A leaking hose is fraught with filling the tool with a fuel mixture, and such breakdowns can only be repaired at a service center. As for the connections, it is better to check them for tightness immediately after purchase. Hoses have a certain service life.

When it expires, they must be replaced. This applies to already used hoses. If you checked the hoses and connections and found a leak, remove the used element and replace it with a new one to avoid serious damage. You can check them by pumping up the fuel mixture after disconnecting from the carburetor.

Carburetor

This is a fragile element of the chain saw that needs delicate debugging. If you have checked all the previous elements, and they work fine, take on the cleaning of the carburetor. Its pollution disables the entire machine. Lay out a clean cloth working surface and gradually, piece by piece, dismantle this mechanism.

Remove dust, tar and soot from it with special liquids. Suitable for cleaning injectors. Then reassemble the whole mechanism. If necessary, write down the order in which you removed the parts or lay them out on the table in order. The cleaned carburetor will begin to function.

Important! The dusty headset is different for each manufacturer. When buying replacement parts, pay attention to the manufacturer, as you risk purchasing the wrong size or technical specifications headset. The terms of operation of the headset are prescribed in the instructions.

Ignition system

Also known as the ignition block, this element is responsible for the electrical generation of the ignition spark. If the electrodes on the spark plug can be pulled closer together, then this unit cannot be repaired. It is simply replaced with a new one. To check for a spark, remove the spark plug, replace its tip, and run the saw dry. If the spark does not jump even after the electrodes are close, contact the service center. There they will put your saw new system ignition.

Cylinder-piston group

This is the last possible source of the problem and the most difficult to repair. First, check its correctness. Replace the spark plug with a compression gauge and start the saw. If you do not have this device, simply close the candle hole with your finger and start the mechanism. If you feel a strong retraction, then everything is in order with the cylinder-piston group. If there is no compression, then you will have to conduct an external examination.

The slightest dents and chips will lead to the immobility of the cylinder. You can make it wider and put in a new piston, or you can replace the entire group, then the tool will last you longer after repair.

Did you know? IN Ancient Greece saws were used only as a tool in construction. They were not only made of metals, but also began to be processed by forging. This greatly increased the strength of the tools and made them popular among the common people. Saws began to be used not only by builders, but also by villagers and artisans.

Chainsaw mechanisms do not work: causes and solutions

You run the saw in different conditions. It can be hot, cold, worn or new, and each of these cases requires a separate approach.

Insufficient chain lubrication

The reason for this may be clogging of the hoses, their deterioration and, as a result, leakage. A poorly lubricated chain and disc will wear out quickly. Check if the oil supply is good - start the saw and point it at a clean piece of paper. If microscopic drops remain on it, flying off a rotating chain, everything is in order. If the leaf is dry, you need to unclog the hoses that supply lubricant to the disc and chain. Be sure to check the joints and junctions of parts with hoses. Leaks must be cleaned, degreased and treated with a sealant.

Fuel quality

Here everything depends on you. Read the instructions, read what quality gasoline is required for the normal operation of the saw, and do not skimp on the power of this mechanism. His gas mileage is low, and fuel with a low octane rating will quickly “kill” him.

Cleaning

Custom cleaning outside the service center is of poor quality. If you gave the tool for cleaning to a familiar craftsman, and after returning it failed to start it, the reason lies in residual contamination. You can take the saw to professional cleaning, or you can do it yourself.

Start by draining the fuel/lube mixture. Then dry all the details and, if possible, clean off carbon deposits from them with needle files. Disassemble the saw into hoses, cylinders and valves. On a separate work surface, disassemble the carburetor. Replace the fuel filter, clean and reinstall the air filter. Wash all parts in warm soapy water and dry them with a hair dryer. Then assemble everything in reverse order and try to launch. He must be successful.

Important! The wear of one part leads to the failure of another. So, the lack of lubrication on the sprocket leads to increased vibration and loosening of the expensive piston group.

Part wear

Most often, the chain sprocket, chain bar, spark plug and piston rings fail. It is recommended to change them as the tool is used. If you haven't been doing after-sales service, and the saw suddenly breaks, first of all, replace the spark plug. It is covered with soot, the electrode tip moves away from the wire. A new spark plug may solve the problem of normal starting. The saw bar and sprocket are Consumables so they need to be replaced more often. They guide the chain, determining the quality of the cut, and it is very dangerous to operate a saw with a worn bar. Have these parts replaced at a service center, or buy similar parts and replace them yourself.

Piston rings fail when sawing hard materials and significant continuous load. Vibration breaks them, they become covered with cracks, the cylinders begin to sink. Wear is indicated by poor traction, low power, smoke from the muffler. It is easy to replace, the main thing is to remove the cylinder piston group from the saw body and clean it of fuel traces so that new rings lie on clean pistons.

Engine flooding

Most often, this problem occurs when trying to start the engine "hot". To resolve the issue, turn the duct damper horizontally and try to start the mechanism. It may not start immediately, but after the evaporation of part of the fuel mixture, it should work. Warm up the mechanism for fifteen to twenty seconds, and then transfer it to idle. Open the choke fully and allow the engine to dry out.

Did you know? Hand saws used in carpentry Ancient Egypt. To this day, frescoes depicting workers with these tools in their hands, dating back to the 14th century BC, are found on the walls of the royal tombs.

Preventive measures

The best way ensure long tool life It's good to take care of him. If you use a saw, then put it on the shelf, and so every time, then you need to reconsider your approach. Use only high quality lubricants and fuels. Minimal savings can destroy the piston group, the cost of which is more than half the cost of the saw. After purchase, run the tool at idle for at least half an hour. Accelerate only when the load increases, cut loose materials at medium speed.

As soon as you finish work, let the mechanism cool down and clean it from small debris. Do not store the fuel mixture in the tank for a long time, otherwise it will flood the entire mechanism and oxidize. If you plan to put the tool aside for a long time, keep it idling until it stalls from burning out the fuel. Flush the muffler and engine from time to time to prevent build-up of oil waste. Change hoses, chain and bar as they wear out.

Important! One saw bar can be used to service three or four chains in a row, depending on the intensity of use. After this amount, the bar must be replaced together with the chain.

Systematic care is important in the care of this instrument. An expensive tool at the disposal of a negligent owner will not last long. Conversely, an owner who takes good care of his tools will use the same chainsaw year after year. If you're unsure of your repair ability, leave it to the professionals. Take the tool to a service center for debugging and ask in detail how to handle it. Be sure to follow the instructions, replace the headset as it wears out. So you will ensure your safety and at the right time you will be able to use a trouble-free working tool.

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