✅ What to do if a spark plug on a chainsaw floods, and repairs -

Household and professional chainsaws are equipped with two-stroke internal combustion engines that are simple in design and reliable in operation. A significant proportion of drive failures occur due to fuel system malfunctions. Why does the spark plug on a chainsaw flood and how to fix this problem with your own hands?

The power units that make up the entire range of chainsaws operate on a precisely dosed mixture of fuel and special motor oil designed for the operation of two-stroke engines.

In the carburetor, fuel and air are mixed in a ratio of 1:16, after which the air-gasoline emulsion is supplied to the combustion chamber.

Why does a chainsaw fill a candle?

One of the known reasons for a spark plug being flooded is incorrect fuel distribution. It is also possible that the quality of the spark plug is poor or the ignition settings have gone wrong.

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It is recommended that you first read the instructions for the saw from its manufacturer. It states that the air intake damper should be closed before starting the unit. When exhaust appears, the damper comes off. Otherwise, the spark plug will flood and the fuel mixture will gradually accumulate in the crankcase.

Experienced craftsmen note that the possibility of flooding candles even after prolonged work with the equipment is not excluded. The reason may be a breakdown of the membrane responsible for regulating the functioning of the fuel chamber. In case of prolonged contact of a membrane made of low-quality material, it becomes inelastic, and its needle takes an open position.

Do I need to adjust the carburetor?

Many consumers do not consider chainsaws to be innovative equipment used only by specialists. Many summer residents and ordinary home craftsmen have such a tool. After all, a chainsaw is used as a convenient replacement for an axe, especially since manufacturers offer customers a variety of models of units at a very affordable price.

Since the design of the device is quite simple, if desired, anyone can figure out why the chainsaw does not start, taking into account the advice of experts.

Fuel and air filters - checking their serviceability

If the fuel or air filter is clogged, the chainsaw will also not be able to start. First you need to check the serviceability of the air filter, which is located in a plastic housing. The air filter of a chainsaw gets clogged very often, so it is recommended to clean it before use. To clean, you will need to use a compressor. If the air filter on a chainsaw is clogged with sawdust and shavings, the engine will not start when hot.

Air does not enter the carburetor, so only an excess amount of fuel is supplied to the cylinder, which causes the spark plug to flood.

The case of a clogged air filter on a chainsaw is very interesting. If it is clogged, then the chainsaw usually starts when cold, but as soon as the air damper opens to supply air, the engine immediately stalls after warming up. When hot, a chainsaw with a clogged filter will not start at all, or it will start and immediately stall. When diagnosing the air filter, you need to pay attention to the damper, through which the air supply is limited.

Make sure that the damper moves freely when you operate the lever to close and open it.

If the valve does not close, then an attempt to start the chainsaw when cold is unsuccessful.
A similar situation occurs when the chainsaw is running hot. If the engine starts when cold, but stalls when warmed up, this may be due to the fact that the throttle is stuck in the closed position.

As you can see, not only the starting of the chainsaw engine, but also its proper operation depends on the serviceability of the air filter and damper.

Problems in the fuel system

The traction characteristics of the engine and the duration of its service life depend on the composition of the mixture.

Working on a lean mixture initiates a drop in power, overheating of the cylinder and intense wear of loaded parts and components of the chainsaw.
Working with a rich mixture is no less dangerous. The malfunction is manifested by an increase in the time it takes to reach operating speeds, increased fuel consumption, and smoke from the muffler.
There is also intense formation of carbon deposits in the combustion chamber and loss of mobility of the piston rings.

→ QUALITY OIL AT THE BEST PRICE

Various low-octane gasolines and fuel substitutes contain alcohol components, which require more time for complete combustion. The profitability of using such fuel is questionable, since there are a number of factors confirming ineffective operation and increased engine wear.

The oiling of the spark plug is facilitated by the use of heat-resistant motor oils for 4-stroke engines, high wear of the compression rings or the entire piston group as a whole.

First of all, you should make sure that there is fuel in the carburetor float chamber. After several attempts to start the engine, a dry spark plug will indicate that the reason for poor starting is the lack of fuel mixture supply.

Recommended sequence of actions:

checking the fuel filter;
patency of the gas pipeline;
cleanliness of the drainage hole of the fuel tank cap;
It is possible that the carburetor float valve may become stuck in the closed position.

To clean the volume of the cylinder, with the spark plug removed and the ignition off, make several vigorous jerks with the starter. In the absence of a new spark plug that is known to be in good working order, it is necessary to thoroughly dry and check the old one for a spark. Warming it up over an open fire is not advisable, since there is a high probability of cracks in the insulator and its complete failure.

To check spark formation, a spark plug with the cap on must be applied to the saw body and cranked with a starter. A working spark plug produces a strong discharge, accompanied by a characteristic crackling sound.

A small spark with a red tint indicates a malfunction of the ignition unit, high-voltage conductor or internal resistor of the standard spark plug.

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Contamination of the main filter parts of the chainsaw negatively affects its operation.

For example, a dirty air filter does not completely supply air to the carburetor, which affects the quality of the air-fuel mixture and normal engine starting. Contamination of the fuel filter will make it difficult, or even cut off, the supply of gasoline to the carburetor and make the engine impossible to operate.

If, upon inspection of the spark plug, it is found that it is wet and sparking does not occur at the contacts, this means that the problem should be found in the ignition system, inspect the coil, check the gap between the flywheel and the coil contacts. There is also an option to check how tightly the cap of the high-voltage wire sits on the spark plug, and the spark plug itself. Try changing it to the newest one.

If upon inspection it is found that there are sparks and the spark plug is dry, this means there is a problem in the fuel system. Checking it should start with the fuel filter. Next, you need to examine the fuel hose and its attachment to the carburetor, note any fuel leaks from the carburetor and the presence of gasoline in the air filter housing. It is advisable to begin removing the carburetor only if a visual inspection does not allow you to find the cause of the breakdown.

A corresponding sign of a problem in the fuel system is an excess amount of fuel in the engine cylinder. Typically, signs of this are an extremely wet spark plug and the presence of a spark at the spark plug contacts. In this situation, you need to turn the chainsaw over so that the spark plug hole is oriented downward. If, with all this, gasoline flows from the cylinder, then the reason that the chainsaw does not start is that fuel has overflowed into the engine.

“Fills” with fuel due to incorrect carburetor adjustment or malfunction.

Of course, you can familiarize yourself with the process of adjusting the carburetor using the example of the Favorit 254 saw, by watching the video annotation.

As in the case of difficult starting in hot weather, problems in the fuel system may affect the starting or impossibility of starting in cold weather. Carburetor adjustment, contamination of the fuel filter and line, a whole range of conditions that cause difficulty starting.

Carry out fuel diagnostics that allow you to conduct accounting (software), this is the first thing that is necessary in case of difficulty starting when cold.

It is worth paying attention to the quality of the fuel, because... Using a mixture of gasoline and oil when there is a small amount of water can make starting significantly more difficult, otherwise it will become impossible.

The mixture must be used fairly fresh, because... When gasoline diluted with oil is stored for more than a month, its characteristics are lost and it complicates starting, both on a cool and hot engine. Gasoline may therefore burn poorly.

During operation of the chainsaw, vibration appears, which can be a prerequisite for damage, as it is also called a break in the fuel line of the chainsaw. Then the chainsaw will stall and it will be impossible to start. To diagnose a malfunction, it is necessary to carry out an inspection and find the presence of fuel leaks.

Contrary to all skeptics, manufacturers from this country know how to create good models that are distinguished by power, reliability, and durability. If a Chinese chainsaw does not start, the problem is most often due to low-quality fuel. Too low properties of gasoline and oil can create big problems for the owner of the tool.

To prepare the composition, it is necessary to use components with the quality characteristics specified in the operating instructions. The same problem can occur if the chainsaw does not start when hot. As for the main parts of the device - the air filter, carburetor, pipes through which the liquid flows, then, as practice shows, they break extremely rarely. Parts must be cleaned regularly.

Help please | Topic author: Fatima

Yesterday I bought a STIHL ms180. I started it and let the tank sleep at idle. Today I started sawing a little and it stalled and won’t start, then you jerk it for a long time, it starts for a few seconds and stalls. I don’t know what to do. I don’t know what to do. Is it possible to return it and will they return it? money

Dmitry (Leyla) You have violated the operating rules. It is STRICTLY forbidden to run in at idle speed, or to break in anything at all. Now change the spark plug, and finally cut with a saw, there is no need to break in anything, the manufacturer has already done everything, full throttle, I emphasize FULL and sawing! ) at first there will be smoke and black slurry will fly out of the muffler, in your case this is normal)) and no idle, no need for a saw - turn it off.

When all the unburned oil burns out of the piston, everything will stabilize.

Alexey (Jemmy) STIHL saw manufacturer does not run in but as it should, I wrote earlier

Sergej (Porcius) Alexey is right, thanks to him for the advice.

Evgeny (Flutura) I don’t know, as soon as I brought it, I diluted the gasoline and put 7 cubic meters of wood into work, only to fill it up and the fire works

Dmitry (Leyla) Evgeniy, he did everything right.

Aleksei (Sharun) guys, tell me this is the problem. I bought a German 180 from my grandfather. It was sawing well, then the idle speed began to disappear. When working, it was necessary to perform peregazovka. then he poured gasoline into a canister that had been poorly washed out of diesel oil. I mixed gasoline as required 1:20. poured STIHL MS180 into the brainchild of Germany. the saw began to malfunction. became high idle. but when I pressed the gas trigger, she began to choke and stall. Maybe this is due to a poorly washed canister.

Dmitry (Leyla) Aleksei, I poured more than 2 times more oil than necessary, you need not 1:20, but 1:50, this is the first, second, gasoline for high-speed gasoline tools itself must be impeccable, from a proven branded gas station, and even more so not contaminated with anything)) do not store the finished mixture for more than 3 - 4 weeks, do not use plastic for storage.

Aleksei (Sharun) Dmitry, thank you very much for your answer, now I’ll know. I just have a Chinese saw like Husqvarna, so even at 80 slabs the rpms don’t drop and the idle is normal. After 6 years of operation, it starts with 4 keys. I adjusted the carburetor myself. but with this German I was a little upset. Tomorrow I will torture him again. Maybe the whole problem is just in the gasoline. thanks for the tip. Good luck

Evgeny (Flutura) how to rivet the crankshaft and assemble it. write in PM

Pavel (Lovett) Friends, tell me what to do, oil is leaking from under the muffler, but the tire is lubricated, you can see in the photo where it comes from... The oil is quickly leaving the tank

Alexey (Jemmy) Pavel, either change the crankcase, or take a thin drill and insert it into a small channel and cut a thread in this hole with an M6 tap, clean it thoroughly and screw in the screw until it hits the drill, the main thing is that no chips get inside

Pavel (Lovett) Alexey, ok) thank you, in short, I understood that I need to shut this thing up)

Alexey (Jemmy) Pavel, everything is correct, the main thing is not to block the oil channel

Alexander (Jewel) Is it possible to leave oil in the tank for long-term storage? MS180. And also, is it possible to flush the oil system with kerosene (let’s say when the oil runs out and I leave the saw for storage) by pouring a small amount of kerosene into the tank - start it up and let it run for a minute? Good luck to everyone in collecting firewood and heating your home.

Dmitry (Leyla) Alexander, in most cases no special manipulations with the oil tank are required, drain the oil and that’s it.

Viktor (Latifa) 180 starts and works well, but one problem is that it does not turn off as it should. what is the reason?

READ STIHL fs 130 trimmer does not gain speed

Tags: How to adjust the carburetor on a STIHL 180 chainsaw video

Is everything intact, clean, and working?

Let's try to adjust it. We take a long screwdriver, find the idle speed adjustment bolt (it is located on the throttle valve), tighten it a couple of turns so that the valve opens slightly. Let's start it up. Does it work smoothly? Then let's move on. Won't start or stalls? Opens the throttle slightly until it starts reliably.

Next, we adjust the quality of the mixture with screw L. We need to achieve maximum idle speed. Here the principle is the opposite - the more the bolt is unscrewed, the richer the mixture. After this, the quality of the mixture is adjusted at maximum speed with screw H.

If adjusting the carburetor does not bear fruit, then it needs to be disassembled. Inspect the membrane, clean the jets and internal passages. To do this, you need not only to have a repair kit, but also, preferably, a spare carburetor.

Troubleshooting Tips

In the first case, the problem is solved by bringing the air intake device into working order. It is recommended to blow out an exhausted paper filter with a reverse air flow or, at best, replace it. Refer to the supplied instruction manuals for cleaning methods for other types of filters.

The carburetor is adjusted with the engine warmed up to operating temperature. The power unit is brought to optimal mode by rotating the adjusting screws for the quantity and quality of the mixture. The success of the work is determined by knowledge of the design of the fuel supply system and the interaction of all components.
In particular, the increased complexity of adjusting carburetors with built-in compensators and other automatic control elements. Such equipment is configured using special equipment that is supplied to service and repair centers.

If the engine cannot be tuned, the cause of excess fuel in the emulsion may be a leak in the valve or a stuck carburetor float itself.

The final result of the work performed:

fast acceleration;
stable operation at idle;
restoration of traction parameters;
absence of increased smoke and detonation noise.

The reason for flooding and throwing a candle on a chainsaw

Often chainsaw owners encounter this problem - the spark plug on the chainsaw is flooded. This should not happen; normally, the candle should always be dry. Sometimes owners use the term "throws the candle." This describes the same problem - flooding a candle.

Let's look at the reasons for this malfunction and find out why the spark plug on a chainsaw begins to flood.

Once you identify a problem, try to fix it immediately. Follow these steps:

Check the condition of the plug. It is advisable to perform this check every 15 working hours. If the engine is not malfunctioning, the fork will be covered with light brown soot;
if the soot is black, the spark plug floods due to the fact that the mixture of air and fuel in the combustion chamber is not balanced and there is not enough air flow. You should also check the gap between the electrodes;
if there is corrosion on the plug or the distance between the electrodes is very large, the fuel mixture is lean;
a plug wet with oil indicates an oil leak;
if the deposits on the fork are light brown and the gap is normal, you don’t need to do anything with the fork - just put it in place and the chainsaw will work normally;
black carbon deposits are removed with sandpaper, and the gap is adjusted with pliers;
if the spark plug is heavily worn, replacement is required - the degree of wear is checked with a spark plug tester. The weaker and more irregular the spark, the more worn the spark plug is.

The cause of a wet spark plug is over-enrichment of the fuel. Disproportion of the fuel mixture when there is not enough air in it can be caused by the following factors:

low quality gasoline (always fill the tool with high quality fuel);
incorrect startup sequence of the chainsaw;
the air filter is clogged and needs to be replaced;
ignition failures;
unadjusted carburetor.

Important! Ignition adjustment is only required if the spark plug is wet! If the spark plug is dry, you should not interfere with the ignition.

Video - why a candle on a chainsaw fills:

Gap and other spark plug parameters

The main parameters that the buyer needs to know:

the diameter of the thread that is screwed into the cylinder;
the length of this thread (colloquially a skirt or shirt);
the gap between the central current-carrying core and the side electrode (ground), between which a spark is formed.

The exact clearance for each chainsaw model is indicated in the Operating Instructions. For different models it varies within the approximate range of 0.45 - 0.55 mm.

There are other options as well. For example, thread pitch. But it is standardized for all candles of this type (M10x1) and they do not think about it when purchasing.

There are spark plug voltage parameters. They are huge, from 10 to 20 thousand volts and above. Manufacturers take them into account when calculating insulators, etc. The user does not need to know the exact voltage.

It is important to remember that if you touch the spark plug contact or spark plug electrode while jerking the starter, you can receive a very noticeable electric shock. It cannot kill, because at high voltage the ignition current has a small force, which is measured in microamps. However, it hits quite noticeably.

Briefly about the main thing

This model is the pride of the German manufacturer and is a specific piece of equipment created for minor work. It is used for less than 20 hours each month. This beautiful device easily helps you cope with the care of your garden and prepare firewood for the period of cold weather (see.

It must be said that these are mini-model chainsaws because they have a low weight, which is 3.9 kg, and they do not have a large tank, both oil and fuel. The manufacturer has equipped this device with a two-stroke engine with sufficient power for light work.

In addition, it is quite quiet because during operation the noise level does not exceed 98 dB. So to better understand the level of loudness itself, just compare its noise with conversational speech, which has an indicator of 76 dB.

The power of this model is 2.6 W. It's worth noting that this is a fairly significant level of power, considering that it is not a professional chainsaw. The oil tank has a volume of only 0.145 liters, and the fuel tank - 0.25 liters. The tire has a size of 350 mm and a pitch of 0.325 inches.

This model is the pride of the German manufacturer and is a straight tool designed for minor work. It can be used for a maximum of twenty hours per month. This beautiful device will help you manage the care of your garden, prepare firewood for winter (see How to cut down a tree), clear areas and become an indispensable assistant in other areas, say, simple manipulations.

We can say that this mini chainsaw model, since it has a light weight of 3.9 kg, it does not have a large tank weight, both oil and fuel. The manufacturer equips this device with a two-stroke engine with enough power for easy operation.

In addition, it is quite quiet, as the noise level does not exceed 98 dB during operation. To better understand the volume level, compare it to spoken language, which is 76 dB.

The power of this model is 2.6 W. It's worth noting that this is a pretty significant level of strength considering this is not a professional chainsaw. The oil tank has a volume of only 0.145 liters, and the fuel tank. 0.25 liters. The tire measures 350mm and has a height of 0.325 inches.

Is there fuel in the tank and what is its quality?

Checking the presence of fuel in the tank is the first place to start diagnosing. Even if there is visually still fuel in the tank, make sure that the fuel line is lowered into it. If the fuel in the tank is low, then this is the main reason why it is impossible to start the engine. After adding fuel to the tank, it is necessary to bleed the system, and only after that carry out a test run of the engine.

If there is enough fuel in the tank, make sure that the supply hose inside the tank is not disconnected. On some models of chainsaws, such a malfunction is a “disease”. If the tank is full, this does not mean that the breakdown is not related to the fuel system. Check the quality of the fuel (oil and gasoline). Gasoline for chainsaws is mainly used of the AI-92 grade. As an oil, you need to use only a special two-stroke oil, but not motor oil or even waste oil.

The prepared fuel mixture cannot be stored for more than 2 weeks, as the mixture begins to lose its properties, which negatively affects not only the operation of the engine, but also its starting. How does a poor-quality mixture affect engine starting, you ask? Everything is very simple, when the mixture is stored for a long time, oil precipitates, which leads to clogging of the carburetor channels and jets.

The instructions for each brand of chainsaw indicate recommendations on the ratio of gasoline to oil. This is the recommendation that should be followed when preparing a mixture for a two-stroke chainsaw engine, otherwise it will significantly shorten the service life of your tool.

To sum it up...

In fact, as you can see, there are quite a few reasons for the breakdown of the STIHL 180 chainsaw, and at the same time, there are also quite a few solutions to this problem. If you are faced with this situation, then simply follow all the recommendations written above and then, undoubtedly, you will be able to repair your device, and it will delight you with its work for many years to come.

Sources:

https://stroyvoLGa.ru/%D0%BD%D0%B5-%D0%B7%D0%B0%D0%B2%D0%BE%D0%B4%D0%B8%D1%82%D1%81% D1%8F-%D1%88%D1%82%D0%B8%D0%BB%D1%8C-180-%D0%B8%D1%81%D0%BA%D1%80%D0%B0-%D0 %B5%D1%81%D1%82%D1%8C/

Chainsaw wet spark plug: why and what to do

The power units that make up the entire range of chainsaws operate on a precisely dosed mixture of fuel and special motor oil designed for the operation of two-stroke engines.

In the carburetor, fuel and air are mixed in a ratio of 1:16, after which the air-gasoline emulsion is supplied to the combustion chamber.

We are trying to start the engine

So, we figured out why the spark plug on the scooter floods. The repair methods and starting methods below apply to scooters with 2T and 4T engines.

The method is suitable if there is no tool. If you flooded the spark plug while trying to start the scooter, then give it time to stand for about 5 minutes. Then turn the gas handle all the way and turn the engine with the starter for about 10 seconds. You can use the foot several times if the starter is faulty. Release the throttle and try to start the engine again - it should work.
If you have a spark plug wrench, you should unscrew the spark plug and warm it up over a fire, after cleaning it from carbon deposits. With the spark plug removed, you should “blow out” the cylinder by rotating the engine with the starter or foot. Screw in the spark plug and try to start. If unsuccessful, the spark plugs should be replaced.

Advice! Although the first method is faster, it is still recommended to use the second. This cleaning of the ignition system will help avoid such problems for some time.

Consequences of flooding

The element responsible for igniting the fuel mixture is the spark plug. It consists of a housing and a central electrode. A side electrode is welded to the “skirt” of the part, which has an electrical connection with the “ground” of the car. Due to the presence of a ceramic insulator, the electrodes do not have contact with each other. High voltage applied to the spark plug contact leads to breakdown of the air gap. A spark jumps between them.

The main condition for spark formation is the absence of an electrical bridge between the electrodes. If the spark plug is wet, a circuit with low resistance is created. This leads to a sharp drop in voltage due to leakage to the housing.

If the chainsaw does not start after a long rotation of the manual starter, then there is a high probability of the spark plug being flooded. The wet candle is wiped with a clean rag and blown with air. It is not recommended to ignite it over fire, because... this leads to the formation of microcracks on the insulator. After cleaning, the functionality of the element is checked. If there is a spark, then it is installed in place and the engine is started. If there is no spark on the spark plug, then it is replaced with a working one.

Throttle valve

The throttle valve is installed in the carburetor body and is responsible for increasing the supply of fuel mixture specifically to the engine cylinder. At the moment you press the gas, the throttle valve opens slightly, thereby increasing the throughput of the channel and the fuel from the carburetor cavity rushes into the cylinder in a larger volume.

The combustion of a larger volume of fuel increases the amount of energy generated, which affects the power and speed of processes. The damper is installed on a shaft passing through the entire carburetor body. At the shaft exit from the housing, a fastening for the throttle cable is installed, and a cone-shaped adjusting screw is located nearby, which is responsible for adjusting the idle speed.

Shtil chainsaw does not start: reasons and solutions

First of all, it is worth noting the fact that chainsaw of this manufacturer is one of his best “creations”, but it also has its drawbacks. Actually, which we will talk about now.

A fairly common problem is that chainsaw and the spark plug floods. The reason for this is that the oil that is poured in to lubricate the chain begins to leak. Since time is merciless and the seal is simply broken exactly in the place where the hose from the oil pump and the oil tank is actually connected. Naturally, this problem can be solved, but given the design of this chainsaw, this will not be so easy, since you simply have to completely disassemble the device in order, as they say, to get to the right place. The video shows it more clearly: https://www.YouTube.com/watch?v=UOsYJBOVuwg
180 chainsaw not start If you believe the experts, then in such a situation you need to first open and then close the cap located on the gas tank. Or take out and dry the candle. Or try to ventilate the combustion chamber. In most cases, this kind of manipulation is quite enough for the device to work. But there are times when the STIHL , but there is a spark...
In the above case, you need to directly check the gasoline supply, the air filter and the immediate performance of the spark plug. Since the basis of this type of breakdown is the breather, namely its contamination. Because when it is completely clogged, a kind of vacuum appears in the gas tank itself, which simply interferes with the fuel supply process. Solving this issue is not difficult, since all you need to do is clean it using a needle.
There are also situations when the device basically started up, but immediately stalled.

The main reasons for this type of malfunction are the carburetor and filter, which could simply be clogged.

In order to exclude the saloon from damaged objects, it is necessary first of all to disconnect the fuel hose from the carburetor itself and actually check whether fuel is leaking from it.

You must remember that during proper operation of the chainsaw, gasoline must flow out in a dense and stable stream. It is also not uncommon for the STIHL 180 chainsaw to not start when hot and actually stalls after switching on, or holds power for a fairly short time. In this case, the problem of breakdown lies precisely in the muffler, which can simply be clogged with any deposits that arise due to the operation of the device , and which settle during the exhaust process.
Also, a fairly common cause of tool malfunction is insufficient lubrication of the device chain itself. The reason for this may be channels that are simply clogged, or the reason is an oil line that is leaking.
Connecting pipes or the connections themselves in the area of the oil pump fittings may also leak.
It happens that the STIHL 180 chainsaw does not start well due to a cylinder that may be broken. But to determine its condition, a visual inspection is sufficient. But if there you find the formation of irregularities and chips, then you can be sure that you have found the cause of the breakdown.
If, through checking, you find that the fault is in the spark plug, then you simply need to unscrew it and then dry it directly. But it is worth noting that under no circumstances should you pierce it, as you will simply ruin the part and it will be unusable. You also need to drain excess fuel from it through a special hole.

In addition, you must remember that direct drying should be carried out for at least thirty minutes, and only after this kind of manipulation can you install it back and actually try to start the tool directly.

The chainsaw won't start. Fills a candle. Repairing a saw with your own hands. #ViktorPolev

Moreover, it may also be that your candle has simply passed its expiration date, in which case it is necessary to replace it. Therefore, excellent advice is that it is best to always have a new candle in stock, or preferably a set. Then you can replace it at any time and actually understand whether it was the direct cause of the device failure. Moreover, the cause of the breakdown may also be a weak contact, which actually connects the high-voltage wire and the end of the spark plug. A faulty ignition unit may also be the cause. It is worth noting the fact that in order to eliminate this kind of problem, it is necessary to replace the unit itself since it cannot be repaired.

READ Dilute Gasoline with Husqvarna Chainsaw Oil

Also important is the concern of the owners of this model regarding the systematic idling after the first gasoline tanks are empty. But if you believe the experts in this field, they claim that this kind of situation does not pose any problem. But still, if this kind of process is repeated quite often, then you need to simply reduce the engine speed by using the carburetor screw.

In addition, you can clean the muffler itself, since the cause of the malfunction may be in it. This manipulation is not difficult. A fairly common occurrence of poor-quality tool performance is the carburetor.

Calm, fills the spark plug Adjusting the carburetor Viktor Polev

But it is worth noting that it would be best if it is repaired by specialists, since if you have the necessary knowledge and skills, then you can simply break it and have to buy a new one.

How the mechanism works

There are four elements where difficulties may arise:

The fuel for which the carburetor is responsible;
Lubrication;
The air that enters through the air filter;
A spark, the quality of which depends on the ignition unit.

They all depend on each other and interact with each other. If any element does not work correctly, the saw stops working.

Let's start with the fact that all tools start up differently - hot and cold. Two commonly used mechanisms are responsible for this process.

Be sure to look at what is written in the user manual. It states that when turning it on, you need to make sure that the emergency stop brake is engaged. But starting a saw with a brake is much more difficult, so sometimes it’s better not to turn on the brake.

First you need to figure out exactly how the tool won’t start. For example, the saw starts up, but immediately stalls, or loses power and cutting quality.

Perhaps interruptions in operation occur due to problems in the engine. But I would not recommend disassembling it right away. It is better to look for the problem from the simplest option.

Read:

It is very important to consider the quality of the fuel. If the mixture is prepared incorrectly or has deteriorated over time, then even such reliable tools as the Ural or Husqvarna 145 will not work

The instructions must indicate the proportions and special oil specifically for your chainsaw.

If you see black carbon deposits or a lot of fuel, then the carburetor may not be properly regulating the fuel supply.

If your saw tool starts, but immediately stalls, then the problem needs to be looked for in the carburetor jet or fuel filter. Perhaps they are clogged.

To check if the breather is damaged, you need to disconnect the fuel hose from the carburetor and see if the fuel mixture leaks out of it.

Quite often, saw breakdowns occur due to a small amount of chain lubricant. This happens when the channels are clogged or the oil line is leaking.

Also inspect the connections of the pipes with the oil pump fittings to see if they are leaking.

It is very bad when a breakdown occurs in the cylinder. When examining it, you may find unevenness or chips, and this may be the cause of the problem.

Risks of using low-quality fuel

The oiling of the spark plug is facilitated by the use of heat-resistant motor oils for 4-stroke engines, high wear of the compression rings or the entire piston group as a whole.