Replacing the armor pipeline on the chainsaw of Partner. PBP STIHL 180 ignition

DIY chainsaw repair with your own hands

Question: Partner 371 chainsaw, month of operation. Starts with half a turn, it works perfectly on idle, but it is worth giving gas-stalls.

And sometimes there are 2 tanks of gasoline will leave and it works fine. Maybe someone had such a disaster, tell me what it can be and what to do?

Answer: I have this when less than half a tank of gasoline and a saw is horizontal.

Question: On the Partner 371 chainsaw, the tire of 18 ″, I wanted to put the tire 16 ″. is there any sense, and how it will affect the saw? If you can make such a replacement, then which tire is better to put?

Answer: Pros of such a replacement. The saw will be easier, more maneuve. The center of gravity of the saw will shift slightly closer to the rear handle, it will be more convenient to saw it.

It will also be more convenient to work with the end of the tire. A shorter chain is cheaper and tighten it faster.

Minus. There may not be enough cut length when sawing in constrained conditions, for example, when sawing fairly thick logs dumped into a heap.

First of all, it is necessary that the new tire should have the same shank as the old.

If you have an Oregon tire installed, then a marking should be knocked out near the shank.

In the indicated article, the first two digits indicate the length of the tire in inches. It is enough to replace “18” with “16”. Example, knocked out 180SDEA, so you need a tire 160SDEA.

Question: My Partner 371 chainsaw has been constantly polluted in a carburetor filter. Where does the dirt come from there?

Answer: There are two ways of pollution of the mesh: through the pulse channel (if the air filter holds poorly) and through the fuel line.

Stihl MS 291 failed!

If the old gasoline filter. replace, rinse the gas tank and the fuel tank. And it should pass.

Question: Partner 371 saw, it works normally on idle, and gas can be given only if the damper is covered by half.

With a completely open damper when pressing the gas key, it begins to stall. How to fix?

Answer: Lack of gasoline. There may be several reasons: the carburetor requires adjustment, the fuel filter is contaminated or the carburetor is clogged.

There may still be a small air leak. But I advise you to start with checking the fuel filter and adjusting the carburetor.

Question: Tell me on the Partner 371 chainsaw. gasoline in the primer should not arrive? Tried to clean the carburetor, nothing has changed. Could not remove the membrane.

Answer: If you press the primer, of course, gasoline should come. If it does not work, you need to check the carburetor, filter, fuel lines. Somewhere clogged.

over, gasoline in the fuel was under pressure. The membrane is sent, if not removed, moisten a little by a cleaner or gasoline.

Apparently, I’m afraid that your knowledge is not enough.

It is necessary to remove the lids, membranes, gaskets, also a mesh. filter on both sides, to unscrew the nozzles, check the functioning of the needle valve.

Well, gasoline itself cannot be cleaned as it should.

Question: The Tire Rub on the chainsaw Partner 371 stood up, all the necessary holes coincided, the chain bought Stilevskaya 3/ 64. I sawed thick boards and along and across today.

Everything works, sometimes it seems that the saw is hard to drag this chain. And Oregonovsky chains 3/8, 1.5. 64. easier in work or also thoroughly load the saw?

STIHL MS 180 chainsaw. replacement of handguard and brake

Answer: In this case, this will more depend on the manufacturer and not on the standard of guide links (1.6 mm Stilevsky standard, but 1.5 mm. the rest of the brands), but from the type of cutting teeth on a specific circuit model, sharpening angle and sharpness cutting edges.

The acuteness will be especially important on the longitudinal sawing, there the chain “plants” much faster and often it happens that it still saws a completely tolerably, but already refuses along the way.

Cafe design

It would seem, why a tanker who is engaged in the cultivation of vegetables and fruits, or the owner of a country house with a small kindergarten and several flower beds? The question is disappeared when there is a desire to build a bathhouse, update the greenhouse, tie an old business or just make a bench for relaxation. Unfortunately, any mechanism periodically needs the prevention and change of spare parts, and for this it is necessary to understand the device of the product well, besides, the repair of the chainsaws with your own hands will save time and money.

All chainsaws are similar in structure, regardless of the European production (Echo, Stihl, Husqvarna) or domestic (cedar, Urals). The main elements are located inside the case. the fuel tank and the engine, and the starter, the handle, the saw part (tire) with the chain are located outside. A sharp jerk of the cable starts the engine, and the one. the saw canvas.

To begin with, we suggest you familiarize yourself with video clips, which show how the chainsaws are arranged and how it works:

From time to time in the work of the saw, failures arise, to eliminate which is required to disassemble. What can happen to such a simple mechanism as a chainsaw? At least the following:

  • Stops starting;
  • Starts, but soon stops;
  • Ceases to function in the cut;
  • Loses its power;

Most of the malfunctions are associated either with interruptions in the engine operation (fuel supply system, exhaust system, ignition, cylinder-piston part), or with malfunctions of other systems and nodes (clutch clutch, chain brake, tire, lubrication system). Consider the most common breakdowns and techniques for their elimination.

The working chainsaw is started from one jerk and does not give failures in the cut

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;
  • Electric cable;
  • Engine shutdown button.

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. 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; 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.

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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.

How the focus of the chainsaw works and how the ignition of the chainship

The device of the carburetor engine does not depend on the tool model. Therefore, we can talk about the standard gaspile ignition system. It consists of the following elements:

  • Magneto. Is an alternating current generator. It is necessary to supply the spark plug with electric shock. Outwardly, this part looks like a motionless winding of an inductance and permanent magnet coil, which is recorded on a flywheel. The latter rotates simultaneously with the crankshaft of the engine.
  • Spark plug.
  • Electric cable that connects 2 previous elements.
  • Device shutdown buttons.

The ignition circuit of the chainsaw is simple. After the start of the tool, thanks to the movement of the flywheel and crankshaft, the rotating magnetic field is formed. It in the existing winding creates a moving force that transforms into stress. This potential is enough for the formation of a spark.

Differences in various models of chainsaws can only be whether the contact or contactless magneto is used. In the first case, one conclusion of the winding goes to the candle, and the second. first to the disconnection button, and then through it to the ground. In the second case, the device has a capacitor, which when discharged forms a current.

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The algorithm for calibration and safety precautions when eliminating the malfunctions of the carburetor of the chainsaw

Carburetor adjustment is performed in two stages:

For the basic adjustment, it is necessary to wrap the screws h and l until it stops and turn back for 1.5 turns. The finish adjustment requires the engine to be warmed up for 5-10 minutes at low speeds.

The finish calibration is performed by turning the idle screw until the minimum engine speed is reached (its work should be stable and the chain. motionless). If the engine stops at idle, the screw must be returned back, and if the saw chain is still set, you should continue to turn counterclockwise.

Calibration check is performed by test:

  • Accelerations (when smoothly pressing the accelerator, the engine should quickly gain momentum to the maximum indicator).
  • The maximum number of revolutions (in the presence of interruptions in the ignition, the screw h should be slightly loosened).
  • Work at idle (the chain should not move, and the engine should gain speed as quickly as possible).

If the owner of the chainsaw is not familiar with the device of the carburetor and does not have the necessary tool for its calibration, you should consult a specialist. The carburetor is a very complex node, so any incorrect action can lead to irreversible consequences, for example, the complete failure of the engine.

Features of modern electronic ignition systems

Today’s ignition systems have changed and have features that change the impulse depending on the speed of the saw. Such a “curve” is programmed in the “chip” and helps the saw more energy, so the altered impulse gives more time to burn fuel, thereby receiving more energy in fuel in fuel. In addition to greater power, some ignition systems facilitate the initial launch of the saw.

While the ignition systems are made more powerful and powerful, the components themselves become less and more durable. Nowadays, the failure of the ignition coil of the chainsaws is very rare.

The ignition systems have come a long way over the past ten years, but engineers say that new technologies will stimulate even greater improvements in the coming years.

I hope this information will help you diagnose and eliminate problems with the ignition system of your saw. If you were not able to eliminate the breakdown, we are always glad to see you in our workshop. We offer only high.quality rosopilia repair. The phone of our workshop 8 (499) 390-93-49

How the ignition of a chainsaw is arranged and how their main malfunctions and elimination works

Gasoline saws are necessarily equipped with ignition system. It is necessary for timely ignition of the fuel mixture in the engine cylinder. Therefore, this is how the ignition is installed on the chainsaw and its periodic adjustment, since without a spark the tool simply will not start.

Signs of malfunction of the lubricant system

The correct selection of consumables and impeccable operation of the system contributes to full lubrication, efficient cooling of sawing equipment and the full development of its resource.

External signs that the chain on the chainsaw is not lubricated. First of all, this is:

  • constant level of oil in the tank;
  • increasing the load on the engine;
  • accelerated wear of cutting edges of saw links;
  • characteristic smell of overheated wood.
replacing, armor, chainsaw, partner

In the simplest version, the cause of oil starvation may be clogging with sawdust of oil wire channels. This drawback is characteristic of budget sets that do not have convenient access to problem areas.

The peculiarity of independent search and elimination of malfunctions

A full.fledged independent repair of the lubrication of the chain chain under all equal conditions requires knowledge of the interaction of all elements of the system, the presence of tools and locksmith skills.

The restoration of the working parameters of many chainsaws provides for partial or complete dismantling of component equipment. To carry out complex repair work, it is better to use the capabilities and technical potential of service workshops.

Parts with torn threads and damaged with slotted compounds, as well as non.graceful constructions that are equipped with a lubrication system for popular chainsaws of STIHL 180 and other models of the same type are subject to replacement.

If, with the tank of the tank, the oil does not enter the design of the headset, the reason should be sought in the pump itself. Dismantling and disassembling the mechanism will help identify faulty parts and eliminate the malfunction for their replacement.

Why stretching

Among the owners of chainsaws there is a question: “Why is the chain stretched on the chainships?””. Reasons for stretching the chain are more than enough. It is only worth noting that this factor cannot be excluded even when using expensive cutting products. The reasons for stretching the saw set are the following factors:

  • A malfunction of the oil pump. If in the process of sawing wood the supply of a reduced amount of oil per chain is carried out, this will lead to overheating of the product, and at high temperatures, the metal is characterized by expansion. Long.term work with impaired functioning of the pump will lead not only to accelerated stretching, but also to a deterioration in the quality of the metal, so soon such an element will need to be replaced. When working after each oil refueling, be sure to check whether the oil enters the cutting product in sufficient quantity. This is done by bringing the tool working at the working revolutions to a clean sheet of paper on which traces of oil should remain.
  • Use of low.quality lubricants. Many owners of chainsaws replace special oil for the chainsaw, which is extremely not recommended, since its composition contains metal particles. These particles fall on the cutting element, which leads not only to increased overheating and stretching of the material, but also to the dulling of cutting teeth.
  • Adverse conditions for work. If work is performed, where there are such components such as dust, dirt or earth on the working surface, then wiping occurs in the places of connection of links, which leads to stretching.

In addition, experienced masters know that new chains are rubbing for some time, so stretching is simply inevitable. For such purposes, all chainsaws have tuning screws to restore the product stretch. No matter what high quality the chain is, and the process of its stretching cannot be avoided. The question is different: how long can she last? It depends on the timely diagnosis, as well as on the quality of the lubricants used.

It’s important to know! The chain is resorted to shortening when the chainsaw is no longer subject to adjustment. By shortening the chain, you can continue to operate the tool for some time, until the acquisition of a new product

What tools will be needed for repair at home?

You can work with the help of the most affordable tools. Depending on the skills and skills, it may be required:

Some masters also use an electric welding machine. It is not recommended to use it, since the seams after welding quickly become unusable under the influence of vibration during intensive work of the chainsaw. This method is suitable only for gearbox chains that transmit efforts to the leading star.

Rules for replacing and stretching the chain on the chainsaw

The chain tension on the chainsaw affects not only the normal operation of the unit, but also the safety of the operator working with it. Basil is a very traumatic tool, and a weakened saw chain can lead to sad consequences. In turn, an overly stretched chain increases the load on the tool. Therefore, before each launch of the device, it is necessary to make sure that this important element has the correct tension.

How to remove a rivet

To change the chain elements or shorten it, you need to separate the links as follows. Fix the chain element in a vice and stretch the rivets, namely, their protruding parts. To do this, you can use a file or file. Make sure that the side parts of the link are not stuck.

It is not recommended to use corner grinder, since there is a risk of overheating of the links, which will lead to a change in the physical properties of the metal.

Using the beard (how it looks shown in the photo below), knock out the rivet.

There is another option for separation of links. This does not need to grind the hats of rivets. Place the link, namely its rivet, over any hole in the metal or above slightly divorced viges. Next, you should put a locksmith beard on a rivet hat and hit it several times with a hammer.

Continue to knock out both rivets alternately, since they are rigidly fixed by the opposite part of the link. Gradually rivets will begin to leave the upper part of the link, and it will be disconnected.

The advantage of this method is that rivets can be used again, since they do not grind.

Reviews of the owners

Yakov Sinelnikov, 56 years old, Khabarovsk

“I bought an old chainsaw. Well, like an old one, she lay in her grandfather for three years in the garage. I tried to get it. nothing happened. He looked a candle, does not seem to flood, drying. Twisted, checked. there is no sparks. I had to disassemble and put a gap. Instead of a probe, he cut a homemade from a plastic bottle, inserted and adjusted. It works perfectly. the main thing is to set and correctly assemble. The candle, by the way, also changed.””

Yaroslav Stambitsky, 37 years old, Zhytomyr region

“After the winter, the chainsaw did not start. I pulled the starter for a long time. the hand is tired, but it will not start. Then I guessed the candle to twist and check the presence of a spark. deaf, there was nothing. Remove the protective cover, looked. the gap is normal. I collected everything, but it will not start again. The day was erupted until I guessed to check the contact on the candle. It turned out that the spring jumped out. Why and when. I will not know the mind.””

Semen Starodubtsev, 54 years old, Krasnodar

“I cleared the garden in the spring, the chainsaw began to sneeze, and then completely stalled. I looked at the candle. wet completely, apparently floods. Cleaned the carburetor, changed the candle. it will not start. I looked. no spark. I dismantled the ignition and found the reason. the high.voltage cable was completely melted. Why this happened. I still don’t understand. Changed the cable with the module. now everything works fine.””

A tricky way to set a gap between the flywheel and the ignition coil on the chainsaw

Brought for repair a chainsaw, whose flywheel touches the ignition coil. A person could fix everything on his own, but did not know what kind of gap to expose.

Good afternoon, dear subscribers and guests of the channel.

Reasons that the flywheel begins to shorten the contact of the ignition coil of only two. The first is an incorrectly adjusted gap or weakening of the screws of the coil mount. The second is the wear of the crankshaft bearings as a result of which excessive backlash arises and the flywheel will touch the reel. In this case, the clearance of the gap will not help, you need to disassemble the engine and change the bearings.

You can notice the malfunction by characteristic stripes on the flywheel (in the magnet area) which remain from contact to the ignition coil. Below in the photo they are clearly visible.

First of all, after detecting characteristic strips, it is necessary to check the backlash on the crankshaft bearings. To do this, remove the starter, turn the flywheel so that the magnets look from the ignition coil in the opposite direction, and try to shook the flywheel with the crankshaft.

If there is a backlash, not even large, then you need to remove and disassemble the engine, if there is no backlash, then it is enough to carry out adjustment and the problem will disappear.

The gap between the coil and the flywheel should be in the range from 0.25 to 0.35 mm. It is possible less, there will be nothing wrong with this, unless, of course, the flywheel does not hurt. No longer desirable, This will affect the quality of the spark, which in turn will affect the engine work. As you can see in the photo in my case, there is no gap at all.

Checking the ignition system

The first thing to do when breaking the chainsaws is to inspect the spark plug, disconnecting the wire and gently twisting it with a special key.

The components of the ignition system of the chainsaw: 1. flywheel with magnets, 2. ignition module, 3. candle, 4. high voltage wire

The spark plug is unscrewed to check its condition

  • Dry. Most likely, the fuel mixture does not get into the cylinder. It’s not about the ignition system, so the candle is twisted back.
  • Strongly sprayed with fuel. The reason for the excess of the fuel mixture lies either in violation of the launch rules or in improper carburetor adjustment. The candle is thoroughly wiped, the fuel supply is blocked and the starter is turned on. to remove the excess fuel and ventilate the combustion chamber. Then the candle is placed in place and the mechanism is launched again.
  • It was covered with a black soil. This may indicate the use of poor.quality oil, an incorrectly adjusted carburetor or an incorrectly calculated ratio of gasoline and oil. The candle should be washed, cleaned of a sharp object (awl or needle), wipe the electrodes with a skin and place in place.

When checking the candle, it is necessary to pay attention to the gap between the electrodes: it is considered normal from 0.5 to 0.65 mm. Damaged or worn gasket should be replaced.

A large amount of black haze on the spark plug indicates engine disorders

For complete confidence, you should check the presence of a spark. To do this, put the ignition cable on the candle, the glossy candles and cylinder are connected by the pliers, the starter is turned and the sparks are monitored. If it is absent, the candle needs to be replaced. If a new candle also does not give sparks, the problem is in a high.voltage wire or in violation of the connection with the candle.

Repair of the fuel supply system

Fuel may not fall into the cylinder for the following reasons:

  • Fuel filter pollution. The fuel hose should be removed and check how the fuel flows. If the stream is weak, you may need to clean the filter. It is taken out through the pouring hole of the fuel tank and cleaned, in the case of severe contamination, it is replaced with a new. As a prevention, it is recommended to replace the fuel filter every three months.
  • Clogging of the saapun (holes in the lid of the fuel tank). They are also checked by disconnecting the hose, in the case of a blockage, cleaned with a needle.
  • Absence or insufficient fuel. There may be several causes of the malfunction. The first reason is the clogging of the air filter. The air stops entering the carburetor in the right amount, in this regard, due to the too enriched fuel mixture, the engine operation is disturbed. The contaminated filter is neatly removed, cleaned and washed in water, then dried and installed in place.

Another reason is the incorrect regulation of the carburetor. Adjustment is carried out by three screws.

Timely replacement of the fuel filter guarantees a full fuel supply

The fuel hose and the drive of the air damper should fit tightly to the fittings

The cable of the lever of the throttle drive should be in its place

During operation, you need to use the instructions, otherwise you can only make it worse.

And the last reason is a violation of the integrity of the membrane or clogging of the carburetor channels.

To repair the carburetor yourself, you need to get acquainted with all its details

All parts should be clean, dry and serviceable.

Identification and elimination of obvious malfunctions of the chainsaw.

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. At this stage, we check:

  • 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 launch 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.

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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 you should look for the problem.

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.

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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.