Why the Shtil 180 chainsaw does not start: causes and solutions

Possible faults

To get any tool working properly, you must first determine the exact cause of the failure. Let's look at the most common situations in which a chainsaw stalls.

Poor quality fuel

For trouble-free operation of the engine, the quality of the fuel used is important. To keep your saw running smoothly, it is important to use the correct fuel.

Fill the tank with gasoline with the octane rating recommended by the manufacturer.

The second important condition is choosing the right oil. When purchasing, you should give preference to products from brands that produce lubricants with special additives

The saw may stall if the proportions of gasoline and oil are not maintained during refueling. Due to lack of lubrication, the mechanisms jam and the tool stops working.

When mixing, you should use the proportions indicated in the instructions for the saw, and not the data on the oil packaging. The optimal ratio for most tool models is 25 ml of lubricant per 1 liter of gasoline.

For smooth operation of the saw, use AI-92 gasoline and two-stroke oil.

Filters are clogged

In this case, the saw runs idle, but when you press the gas it stalls. Most often this is caused by the use of low-quality gasoline. A clogged filter interferes with the flow of fuel to the engine, so the saw stops under load.

One of the important parts of the tool is the air filter. The performance of a chainsaw depends on its cleanliness and correct choice, which directly depends on the operating conditions of the tool:

Cotton filter - installed on tools that are used with a saw in the warm season in dry air.
The HD 2 filter is intended for use of the tool in winter or in dusty conditions (for example, during large-scale logging). Such parts are often equipped with professional tools.

Breather clogged

This small hole on the chainsaw tank is designed to allow air to enter. Depending on the model, it is located in the lid or in one of the walls. A clogged breather creates a vacuum inside the tank, which prevents fuel from entering the carburetor.

Fuel supply interrupted

A broken or damaged pipe is a possible reason why the saw stalls during operation. In this case, the tool starts up, since a small amount of fuel is present in the engine, but refuses to work further.

Storing the saw at sub-zero temperatures will cause the fuel tube to crack. The situation will be corrected only by replacing the part.

Problems with electrical components

Spark plugs are an important element of a chainsaw engine. The tool may stall if carbon deposits accumulate on their surface. Therefore, spark plugs need to be cleaned periodically and changed promptly.

Problems with the power supply can occur if the gap between the ignition coil and the magneto is damaged. This is caused by impacts when operating the saw in difficult conditions. For stable engine operation, the gap should not be more than 0.5 mm.

Expert opinion Dmitry Konstantinovich Levin

The lack of a spark may be due to a clogged fuel filter or depressurization of the tubes. If the spark plugs are wet, it means that during operation of the tool they are filled with gasoline or oil.

Carburetor not adjusted or clogged

Problems with the operation of this unit are indicated by the saw stopping at idle.

The carburetor malfunctions in the following cases:

clogged jets, nozzles, channels or filters;
wear of oil seals, cuffs, gaskets;
incorrect adjustment.

Dirty muffler

The accumulation of carbon deposits in this part leads to loss of power of the tool. The muffler can become clogged if the wrong or low-quality oil is used. Adding too much lubricant to gasoline can also cause clogs.

Poorly lubricated chain

Due to clogging or damage to the oil drive, the tool tire remains dry: the chain jams and the saw stalls during operation. The same problem can arise when using low-quality oil.

Ignition faults

Most often, we think about repairs after the chainsaw stops starting, or visual signs of serious damage appear.

Signs of ignition malfunction:

The chainsaw starts, but works unevenly (troits), often sneezes and shoots;
The power of the chainsaw has noticeably dropped;
When you sharply press the accelerator trigger, failures in engine operation are observed;
The chainsaw does not start well when cold, it stalls violently until it warms up;
Fuel consumption has increased significantly;

If such flaws appear in the operation of your chainsaw, then it’s time to diagnose, adjust, and possibly repair the ignition system.

Fault location determination:

First of all, it is necessary to inspect the spark plug; if a lot of carbon deposits have accumulated on it, then the cause of the malfunction is most likely related to the operation of the carburetor, piston group or fuel quality. If the spark plug visually appears to be in good working order, does not spark and is dry, make sure there is a spark.

Unscrew the spark plug, put the ignition cable on it;
Using insulated pliers, press the spark plug threads to the motor housing;
Pull the starter handle sharply towards you and make sure there is a spark;

If there is no spark, replace the spark plug with a new one and test again. After making sure there is a spark, start the engine. But what to do if there is no spark even on a working spark plug? Let's continue the search:

We test the electrical cable for breaks and insufficient contact with the spark plug. We check the serviceability of the spring in the cap of the candle holder and the presence of contact with the armored cable;

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

We check the gap between the ignition module and the flywheel magnetic circuit. It should be no more than 0.3 - 0.4 mm.

You can set the correct gap using a feeler gauge; they are not in short supply and are available for a small fee.

Diagnosing a fault with a multimeter

The malfunction of the ignition coil can also be determined using the so-called hardware method. However, for this you must have a multimeter with which diagnostics are carried out.

Step-by-step ignition diagnostics with a multimeter:

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

Video review of fault determination using a multimeter

Ignition adjustment

As we have already noted, you can adjust the ignition system both in the workshop and at home. To do this, you will need ordinary wrenches, a screwdriver and a 0.4 mm feeler gauge (you can make a feeler gauge yourself from scrap materials - regular copier paper, a plastic bottle, etc.).

Step-by-step adjustment of the chainsaw ignition:

We diagnose the malfunction;
Remove the protective cover;
We remove the module with a candle holder and an electrical cable. We carry out a visual inspection of them and, if necessary, replace them with a new one;
We install the ignition module, but do not tighten the fastening screws all the way;

We determine the area with the magnet on the flywheel;
We set the gap properly, in accordance with the parameters specified in the instruction manual;
We tighten the module fastening screws until they stop, check the settings with a feeler gauge, and, if necessary, re-adjust;
We install the protective cover and check for the presence of a spark on the spark plug;
We screw in the spark plug and start the chainsaw;

Important: when repairing the ignition of a chainsaw, special attention should be paid to setting the correct gap between the module and the flywheel.

You should also check whether the counterweight flywheel is catching on the module. If this happens, you may have a failed bearing or play in the shaft.

General information

The characteristics of this saw are a source of pride for the German manufacturer. At the same time, the unit is a tool that is designed to perform a small amount of work. The tool is positioned for household use, which confirms the intensity of its use, which should not exceed 20 hours per month. Having such a unit at your disposal, it will not be difficult for you to maintain order in your garden, prepare firewood for the winter, and also clear areas. At the same time, he will be able to help you in solving other problems where there is no need to perform complex manipulations.

Main characteristics

does not exceed 98 dB

The Stihl 180 chainsaw has a power of 2.6 watts. In principle, this is enough, remembering that we are talking about a tool for household use.
The capacity of the oil tank is 0.145 l, the fuel tank is 0.25 l.
The tire provided by the design has dimensions of 350 mm, with a pitch of 0.325 inches.

Winding device

As with other saws, the carburetor plays the role of the main starting device. Looking in more detail at the carburetor that the Stihl 180 chainsaw is equipped with, it should be noted that it has a single adjustment screw. In other words, it is a kind of idle speed adjustment screw. In this case, the jet, which bears the full load, is motionless all the time.

In other words, the regulation is not applicable to him. In turn, there is no way to influence the full load in any way

You also need to pay attention to the factory settings, due to which the air-fuel mixture is supplied directly to the engine. Moreover, this principle remains regardless of the operating conditions of the tool.

Saw Shtil 180 Doesn't Start When Hot

Content

Don't start chainsaw 180? Reasons and solutions!

Today, the manufacturer Shtil occupies a leading position among other companies that produce equipment for agricultural and construction work. The products of this manufacturer are known not only for their high level of quality, but also for the optimal pricing policy and the power of its models. This is one of the world's most famous companies.

It is probably quite difficult to meet a person who does not have a chainsaw of this brand. But that out of ten it is possible that six people have them. And this is not surprising, since Calmstress chainsaws represent strength as well as sleek design. But unfortunately, such technology giants 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. Read about the stihl ms 660 chainsaw here. So let's get started.

Briefly about the main thing

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 it 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.

Winding device

The basis of this type of plant, like all other chainsaws, is the carburetor. But since we are talking today about the Shtil 180 chainsaw, it does not depart from the topic. So. The carburetor in this model has one adjustment screw , that is, it is a kind of screw that sets the idle speed. While the fully charged jet is motionless.

READ Chainsaw Shtil Disassembly And Assembly

Chainsaw carburetor calm 180

In simple terms, we can say that it simply cannot be adjusted (see here), while the full load setting cannot simply change. It is important that the carburetor is designed at the factory in such a way that, regardless of the conditions under which the chainsaw is operated directly, the air-fuel mixture is supplied to the engine.

Don't start sawing: reasons and solutions

First of all, it is worth noting the fact that the 180th saw of this manufacturer is one of the best in its “creations”, but also has its drawbacks. Actually, what we are talking about now.

Quite often the problem is that the 180 shaft saw will not start and will flood the spark plug . The reason for this is that the oil that is poured in to lubricate the chain begins to leak. Because time is merciless and a simple leak occurs in the place where the hose itself is connected to the oil pump and the oil tank. Naturally, this problem can be solved, but given the design of this chainsaw, it will not be so easy, since you will simply need to completely disassemble the device in order, as they say, to get to the right place. The video shows more clearly: https://www.youtube.com/watch? V = UOsYJBOVuwg
Many people are concerned about this issue: why not start the Shtil 180 chainsaw? If you believe the experts, then in this situation you need to first open and then close the cap that is on the gas cylinder. Either take it or dry the candle. Or try resetting the combustion chamber. In most cases, this kind of manipulation is enough to make the device work. But there are times when Chainsaw Steer does not start, but there is a spark
In the above case, you need to do a direct test of the gasoline supply , air filter and direct spark plug operation. Because the basis of this kind of failure is respite, namely its contamination. Because when it is completely clogged, there is a vacuum in the gasoline tank itself, which simply interferes with the fuel delivery process. It is not difficult to solve this problem as all you have to do is clean it using a needle.
In addition, there are situations when the device is, in principle, wounded, but immediately died out .

READ Band Saw Wheels

Chainsaw won't start when hot

Chainsaw won't start

on
hot
.

The Shtil 180 chainsaw does not start. We measure the compression in the cylinder.

How to measure compression in a chainsaw.

The main reasons for this type of failure are the carburetor and filter, which can easily become clogged.

To eliminate the saloon from being damaged, you will first need to disconnect the fuel hose from the carburetor itself and ensure that no fuel is leaking out of it.

You must remember that when the chainsaw is working properly, gasoline should flow out in a dense and stable stream . Also, it is not uncommon for a chainsaw to take a calm 180. A calm 180 does not start hot and actually stops after turning on or holds power for a short time. In this case, the problem of breakdown lies precisely in the muffler, which can simply be clogged with any sediment that occurs during operation of the device, and which settles during the exhaust process.
In addition, a common cause of tool failure is insufficient lubrication of the device circuit itself . This could be due to passages that are simply clogged, or it could be due to an oil pipe that is leaking.

Chain chain lubrication

Connecting pipes or the connections themselves may also leak in the area of the oil pump connections.
It happens that the Chainsaw 180 starts poorly due to a cylinder that can be broken. But to determine its condition, it is enough to check visually. But if you find the formation of unevenness and splitting there, then you can be sure that you have found the cause of the splitting.
If through testing you find that the fault is in the spark plug , then you just need to turn it off and then do direct drying. But it's worth noting that it can't be pierced anyway, as you'll just ruin the part and it won't be used. You also need to remove excess fuel from it through a special hole.

In addition, you must remember that immediate drying should be carried out for at least thirty minutes, and only after such manipulations can you install it back and actually try to make a straight start of the tool.

Moreover, it could also be that your spark plug has just passed its expiration date, in which case it needs to be replaced. Therefore, the best advice is that it is better to always have a new candle or a better set. You can then replace it at any time and actually understand whether it was the immediate cause of the device failure. In addition, the cause of the failure may be a weak contact that actually connects the high voltage wire and the end of the plug. In addition, the cause may be a failure of the ignition unit. It is worth noting that to eliminate this, the unit itself, since it cannot be repaired.

READ What You Can Make From An Old Saw

No less important is the excitement of the owners of this model - systematic idling after the actual emptying of the first gasoline tanks . But if you believe the experts in this field, then they say that this situation does not pose any problem. But still, if this process is repeated quite often, then you just need to reduce the engine speed using the carburetor screw.

In addition, you can personally clean the muffler itself , because the cause of the malfunction may be there. This manipulation is not difficult. The carburetor is often a common cause of poor tool performance.

But it is worth noting that it is best to have experts fix it, since if you have the necessary knowledge and skills, you can simply break it and buy a new one.

The important thing is that even if you have found the cause of the tool failure, this does not mean that you can fix it yourself. Because there are types of damage that can only be corrected by a specialist. If you have made a direct manipulation regarding checking and replacing the quality of the oil (see “Oil for a chain saw”), but, nevertheless, the chainsaw still refuses to start, in which case you need to continue the search.

But if you have completed all the above-mentioned manipulations completely and have not missed a single nuance, but still the tool is not fixed yet, then in this case the Problem lies in the group which is called cylinder . But if you still cannot “revive” your iron friend, then just take a chainsaw to where you will have your device repaired.

Summing up

In fact, as you see the causes of chainsaw collapse, Stil 180 is quite a lot, and at the same time, the solutions to this problem are just as good. If you are faced with such a situation, just follow all the above recommendations and, undoubtedly, you will be able to restore your device and it will delight you with your work for many more years.

We also recommend reading the rating of the best chainsaws.

How to check the receipt of an impulse from the engine crankcase

The fuel pump is located in the carburetor. Its operation is carried out by the receipt of impulses from the engine crankcase through the impulse channel. The channel is located in a rubber pipe through which the cylinder and carburetor communicate.

If the pulse channel becomes clogged, the quality of the fuel supply decreases or it does not arrive at all. To gain access to the pipe, you need to remove the air filter housing and carburetor. After this, the channel is checked or cleaned using a metal wire.

Adjusting the idle speed of the Shtil 180 chainsaw carburetor

The design of the Shtil 180 chainsaw contains many rubber parts. All of them require systematic inspection for cracks and other defects. If they are present, the parts are replaced with new ones.

Another reason for the lack of impulse may be depressurization of the Shtil chainsaw engine crankcase. In this case, the air supply to the pump is reduced or completely stopped.

Check the tightness using a vacuum gauge. If it is absent, a medical syringe will come to the rescue. The operation is carried out on an engine with the carburetor removed. Take a little motor oil into the syringe and pour it into the impulse channel, and then pull the starter handle.

If there is no pulse, the oil will remain in the channel. This problem can be resolved by disassembling the engine and replacing the seals. If the oil is squeezed out of the channel, the problem probably lies in a pump malfunction.

Return under warranty and post-warranty service

Chainsaw maintenance includes:

Monitor the quality of gasoline and oil on the basis of which you prepare the fuel mixture. Stick to the correct proportions when doing this;
Do not use fuel prepared more than two weeks ago. Regularly check and clean the gasoline and oil tanks, otherwise the engine will stall or the saw will not start at all;

Chainsaw chain maintenance

Clean the air filter regularly. It has a simple device and this operation will not require much effort from you;
Turn the bar over every time after the next sharpening of the chain - this will extend the service life of the saw set;
Regularly check and thoroughly clean the oil inlet and outlet ports, oil channel and guide bar groove. Remember that if the automatic lubrication system is faulty, your saw will start or stall;

Currently reading: Calm 180 Fills the Candle Reason

Your main assistant should be the instruction manual. If you have lost it, you can contact the dealer of the company whose chainsaw you use; they will provide you with instructions in electronic form.

So, before each time you turn on a gasoline chain saw, be sure to check that the chain is in good condition, whether its teeth are sharpened, and whether it is well tensioned (does not sag, but is not too tight, it can be pulled a little away from the blade).

You can sharpen the chain using a special machine or a file with a special template (depending on the tooth pitch of the chain, there are different templates).

Every time after use, the chainsaw must be cleaned: the chain, bar, air filter, housing, cooling fins, cracks and other grooves are cleaned of sawdust. After using the saw, turn the bar over so that it wears evenly, lubricate the sprocket (if there are grooves for lubrication in the front of the saw).

During long-term storage, be sure to drain the fuel and oil! The chain and the bus form an electrochemical pair, so they rust together and must be stored separately.

Chinese chainsaw won't start. Diagnostics and repair.

What to do if the chainsaw does not start

Remove the spark plug and inspect it. It should be light brown in color and without a black coating. The chainsaw does not start, there is no fuel supply. In addition, it should not be completely dry. This may indicate that there is no fuel supply. If it is very wet, then this indicates that you have flooded it.

Although much less common, it also happens that it is impossible to start a chainsaw due to the lack of a spark at the spark plug electrodes. How to check its presence? It's very simple. Again, we unscrew the spark plug, put a high-voltage wire on it and ensure reliable contact of the spark plug body (that is, its skirt, where the thread is) with the cylinder block. After this, we pull the starter's hand as when starting.

You should clearly see the spark. If there is fuel supply, but no spark, then most likely the magneto is faulty or there is a broken wire somewhere in the system. No fuel supply. The chainsaw Shtil ms 170 is light, convenient and well suited for work. In this case, check the serviceability of the magneto and the integrity of the electrical circuit. After all these operations, the engine should start. If it doesn’t work, then write to Let’s try to figure it out.

To determine the reason why the chainsaw does not start or stalls when starting, it is necessary to troubleshoot the tool. The essence of the procedure is a sequential inspection of the condition and operation of the main working elements of the saw engine. At this stage we check:

Presence of a spark on the spark plug;
Fuel supply;
Filter status;
Operation of the breather built into the fuel cap of the stalling unit;
Functioning of the exhaust channel.

If the initial inspection did not yield anything or the defects were eliminated during the search process, but the chainsaw still does not start, then you need to look for more serious reasons. It is best to identify and repair such breakdowns at a service center. However, if you have experience, you can find and eliminate them yourself. What to diagnose and check?

Compression in the cylinder;
Compression in the crankcase;
Carburetor operation.

In the first case, checking the compression in the cylinder will allow you to find out the condition of the cylinder-piston group (CPG) of a chainsaw that does not want to start when cold. To do this you need a compression gauge. The device is screwed into place of the spark plug and the engine is started idle. Measuring the readings allows you to judge the condition of the CPG. In the absence of a compression gauge, you can determine the compression in the cylinder offhand as follows:

Place your finger on the spark plug hole;
Try to start the chainsaw engine.

By placing your finger on the spark plug hole and pulling the starter, you can check the compression in the cylinder

A chainsaw may not start when cold due to a lack of compression in the engine crankcase. The main reason for this is damage to the gasket located between the cylinder and the crankcase. It is quite easy to detect a lack of compression:

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

If fuel is sucked out of the cap when the chainsaw starter starts, then everything is fine with compression. If not, look at the gasket.

Starting the tool may be complicated by improper operation of the carburetor or its breakdown. It often happens that during the sawing process the fastening screws become loose and air is sucked into the cylinder. Check that the carburetor is securely fastened. Inspect it for fuel leaks. There can be many reasons for the malfunction. It is possible to accurately determine the malfunction, eliminate it and fine-tune the carburetor only at a service center.

After going through a step-by-step troubleshooting of the chainsaw engine, you will be able to find the malfunction, fix it yourself and successfully start your working tool. Do not take on types of work that you are not confident in. Entrust troubleshooting and troubleshooting to specialists from the service center.

A dirty filter should be removed very carefully so that accumulated dirt does not fall and enter the carburetor. The filter must be cleaned or washed with water and detergent.

Then dry it and install it back.

It often happens that during prolonged use, the walls of the exhaust pipe are covered with carbon deposits, which prevents the free exit of exhaust gases.

In this case, remove the muffler (if possible) and wash it with detergent, then dry it thoroughly with a hairdryer.

ATTENTION! Carbon deposits contain carcinogens. During dry cleaning, it can enter your lungs, which poses a threat to your health.

Read your chainsaw manual carefully to prevent this from happening again.

Why Doesn't Gasoline Get into the Chainsaw's Carburetor?

The main malfunctions of chainsaws and do-it-yourself repairs

A chainsaw is a worthy replacement for hand saws and axes. Why is gasoline not flowing from the chainsaw tank? Now this tool is available in almost every household - it is indispensable when arranging a personal plot, construction and repair work. For summer and winter work, you need to buy gasoline for a chainsaw and then dilute it. Severe use and improper care of equipment can lead to its premature failure. Air stops flowing into the carburetor and they wonder why it doesn’t deliver gasoline. But the owner of a chainsaw does not necessarily have to immediately go to a workshop - many of the defects that can happen to it during use can be completely removed without the help of others.

Content

Chainsaw design and general classification of faults

The main condition for successful repair is correct diagnosis. Because in order to find out why the chainsaw failed and, most importantly, how to force it to work again, you first need to know the features of its design.

It should be noted that it is not particularly complex, as it includes:

engine (two-stroke petrol);
multifunctional part (saw bar and chain);
systems that ensure the joint operation of these two components (ignition, filtration, lubrication, etc.), in other words, the tool as a whole.

In order to simplify the diagnosis of faults, they are usually divided into two main categories:

motor malfunction;
malfunctions of other chainsaw components.

Most often, failures occur in motor systems, but other parts of the tool can also fail at any time due to intensive use or improper care. How to find where exactly the breakdown occurred? Ordinary logic will help us with this.

If the problem is in the engine, it will:

won't start;
stall;
work unstably;
overheat;
smoke;
develop insufficient power.

As for all other defects, they usually manifest themselves when the engine is running normally.

Starting the engine: checking the spark plugs

If the chainsaw does not start, the first thing you need to do is check the fuel consistency in the tank. By the way, it must be prepared in the proportions specified by the motor manufacturer, otherwise the tool simply will not start.

After making sure that the fuel mixture is correct and available, you should check the ignition system. As a result, more fuel enters the carburetor; chainsaws will help the carburetor. To do this, you need to inspect the spark plug.

READ Chainsaw Stalls Under Load Cause

Her condition can say a lot:

indicates that the fuel mixture does not enter the carburetor, which means the problem is not in the ignition;

fuel-spattered candle

is the result of an excess of fuel consistency, which lies either in a violation of the method of starting the engine, or in incorrect carburetor adjustment;

this is a signal about the presence of bad oil in the engine lubrication system, incorrect carburetor settings, or an incorrectly prepared fuel mixture.

If the spark plug is splashed with fuel, it must be thoroughly wiped after removal. The fuel supply system should also be cleaned. A chainsaw is also needed in construction; as a result, more fuel enters the carburetor. Then, accordingly, fuel does not flow into the chainsaws. No carburetor. To do this, it closes, after which the starter turns on. A candle covered with soot must be carefully cleaned using an awl and sandpaper.

When checking spark plugs, you should pay attention to the distance between the electrodes (the usual gap is 0.5-0.65 mm), as well as the condition of the gasket and the presence of a spark. A warped or worn gasket will have to be replaced, and the spark can be checked by putting on the ignition cable, connecting the cylinder and the spark plug nut and starting the starter.

If the discharge does not occur, the spark plug must be changed. In this case, if a spark does not occur even with the new spark plug, it means there is a problem in the connection with the high-voltage wire or in it itself.

DIY chainsaw repair: fuel supply system

If the fuel mixture does not enter the cylinder, but the spark plug works normally, this may mean that:

The fuel filter is clogged.

To clean this unit, remove the fuel hose and check the flow. In what proportion should gasoline and chainsaw oil be mixed? The heart of any chainsaw is a two-stroke internal combustion engine. If it is weak, the filter must be removed through the filler hole of the fuel tank and cleaned or replaced if completely worn out.

Why does gasoline not flow from the chainsaw tank to

carburetor

? There is only one reason, the formation of a vacuum in the tank. Solving the problem, pull out the white plug, clean

Chainsaw repair, fuel pump does not work

Online store Gasoline tool repair VKontakte group

As a preventative measure, it is recommended to replace the fuel filter at least once every 3 months.

This is nothing more than a hole in the fuel tank cap, which is cleaned with an awl.

The fuel mixture is not supplied or is supplied in insufficient quantities.

There may be several reasons for this:

the air filter is clogged (in this case, it must be removed, washed with water, dried and replaced);
the carburetor settings have gone wrong (which means this unit needs to be adjusted again);
the integrity of the carburetor membrane is damaged (must be replaced);
the carburetor channels are clogged (it must be disassembled and all parts and components cleaned).

READ How to Count Chainsaw Chain Links

Troubleshooting muffler problems

If the chainsaw engine operates normally at low speeds, but starts to stall and smoke at high speeds, the problem may be hidden in the muffler.

To check the quality of its work you should do the following:

dismantling (with mandatory closing of the outlet);
disassembly (if the muffler is dismountable);
cleaning from carbon deposits using special detergents or the dry method;
drying (using a hair dryer);
reassembly and installation.

Dry cleaning without respiratory protection is not recommended. And it didn't hit the carburetor. Gasoline-oil chainsaw c. Husqvarna chainsaw does not supply gasoline Watch video · to prevent users from reaching into the carburetor, the chainsaw does not supply gasoline to the cylinder. Often chainsaw owners think about why the chainsaw shoots into the carburetor, or why gasoline does not flow into the chainsaw carburetor? Carcinogens present in carbon deposits will be released into the surrounding atmosphere in the form of dust, the inhalation of which is extremely dangerous to health.

To prevent clogging of the muffler during operation of the chainsaw, you should carefully monitor the composition of the fuel mixture and the quality of its components.

Repair of cylinder-piston group (CPG)

If the chainsaw engine does not start or cannot develop normal power, it is likely that there is not enough pressure in the engine cylinder to burn the fuel mixture. The reason for this may be wear of the elements of the cylinder-piston group - piston, rings, bearings, etc. In order to assess the condition of this unit, it should be visually inspected after first removing the muffler.

For a more complete diagnosis, a compression gauge is placed in the spark plug hole of a two-stroke chainsaw engine. It is used to measure compression in the engine. Based on the test results, one can judge the condition of the CPG, but accurate facts can only be obtained by completely disassembling the unit.

If the piston is chipped or scratched, it will obviously have to be replaced. The same applies to deformed or broken piston rings - for normal engine operation they must be fully functional and free of carbon deposits.

Checking the carburetor and signs that it needs adjustment

A correctly functioning carburetor guarantees maximum efficiency of the chainsaw, that is, it is possible to develop full power with the most economical consumption of the fuel mixture. Adjustment of this unit is usually carried out by the manufacturer, but its design provides for the possibility of adjustment during operation.

The fact that such adjustment will have to be made by the owner of the chainsaw is evidenced by:

Strong vibrations or damage to the protective cap.
CPG wear.
Carburetor clogged.
Inability to start the engine or its spontaneous stopping after starting.
Increased fuel consumption and exhaust emissions with a simultaneous decrease in engine power.

READ Carburetor Adjustment for Husqvarna 142 Chainsaw

The chainsaw carburetor is adjusted in strict accordance with the manufacturer’s instructions using three special screws, which are responsible for the maximum (“M”) and minimum (“L”) speeds, as well as engine idle speed (“T”). In order to exclude unwanted interference by an inexperienced user in the operation of the carburetor, some manufacturers install only one idle screw.

Calibration algorithm and safety precautions when troubleshooting a chainsaw carburetor

Carburetor adjustment is performed in two stages:

Basic (carried out with the engine off).
Finish (carried out with the engine running, preheated).

For basic adjustment, screw screws H and L until they stop and turn them back 1.5 turns. Final adjustment requires that the engine be warmed up for 5-10 minutes at low speeds.

The final calibration is performed by turning out the idle screw until the minimum engine speed is reached (its operation must be stable and the chain must be motionless). If during operation there is no oil supplied to the chainsaw chain, supply oil to the chain. Gasoline does not flow into the chainsaw. If the engine stops idling, the screw must be returned back, and if the saw chain still moves, you should continue turning it counterclockwise.

Calibration check is performed by test:

Acceleration (when you gently press the accelerator, the engine should quickly gain speed to its maximum).
Maximum speed (if there are misfires, screw H should be loosened slightly).
Idling (the chain should not move, and the engine should pick up speed as quickly as possible).

If the owner of the chainsaw is not familiar with the carburetor structure and does not have the necessary tools to calibrate it, you should contact a specialist. A carburetor is a very complex unit, so any incorrect action can lead to irreversible consequences, such as complete engine failure.

Other chainsaw malfunctions

If the diagnostics showed that everything is in order with the engine and its systems, then the cause of the malfunction should be sought in other components of the chainsaw. The most common problems are:

starter failure;
improper operation of the lubrication system;
incorrect operation of the chain brake;
saw chain wear, etc.

If the cause of tool failure is not visible to the naked eye, as is the case with the engine, it is necessary to carefully diagnose the faults and eliminate them in accordance with the manufacturer’s recommendations and safety regulations.

Source

Fuel supply system repair

Fuel may not enter the cylinder for the following reasons:

Fuel filter is dirty. You should remove the fuel hose and check how the fuel flows. If the stream is weak, the filter may need to be cleaned. It is taken out through the filler hole of the fuel tank and cleaned; in case of severe contamination, it is replaced with a new one. As a preventative measure, it is recommended to replace the fuel filter once every three months.
Clogged breather (hole in the fuel tank cap). They also check by disconnecting the hose; if clogged, clean it with a needle.
Lack or insufficient fuel. There may be several reasons for the malfunction. The first reason is a clogged air filter. Air stops flowing into the carburetor in the required quantity, and therefore, due to the fuel mixture being too rich, engine operation is disrupted. The dirty filter is carefully removed, cleaned and rinsed in water, then dried and replaced.

Another reason is incorrect carburetor adjustment. Adjustment is made with three screws.

Timely replacement of the fuel filter guarantees a complete fuel supply

The fuel hose and choke actuator must fit tightly to the fittings

The throttle cable must be in place.

During work, you must use the instructions, otherwise you can only make things worse.

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

To repair a carburetor yourself, you need to become familiar with all its parts.

All parts must be clean, dry and in good working order.

Chainsaw Shtil 180 No Fuel Supply

Content

Chainsaw malfunctions and repairs

A chainsaw is not such a complex device. However, in the event of a malfunction, you should have at least the basic knowledge to troubleshoot and repair the defect.

Let's look at the main chainsaw malfunctions, find out what they relate to, and also look at the basic steps to correct the errors.

The most important thing before starting repairs is to correctly identify the problem. And there may be several reasons for each element not working. Therefore, before you start dismantling the chainsaw, you need to try to determine what is causing the failure.

As a rule, a chainsaw failure is caused by a malfunction of the engine or the occurrence of ruptures in its other components.

Engine faults:

ignition fault;
failures in the fuel supply system;
piston or cylinder failure.

In other components, the most common failures occur due to failures of the brake mechanism, lubrication system, clutch operation, tires, etc.

Let's look at both groups of errors so that you can, if necessary, determine the cause of the failure yourself without contacting a repair shop.

Engine malfunctions

The following defects are most often observed in engine operation:

the engine does not start at all;
he starts but immediately nods;
does not develop the required power;
works unstable.

To find the cause of the problem, you need to analyze the possible causes in order of the remedy method. Let's go through this chain so that you know how to find a defect in a chainsaw if it appears.

Chainsaw ignition system malfunction

Problems in the ignition system most often cause engine failure in gasoline powered tools. Therefore, it is necessary to begin troubleshooting.

Examine the candle. To do this, carefully remove the high-voltage wire from the head, and then unscrew the spark plug from the socket using a special key.

If the spark plug is wet, there is excess fuel. Most often the feed

excess fuel is due to incorrect carburetor settings or problems in the ignition system.

The candle should be thoroughly wiped with a dry paper towel and dried. Additionally, you will need to drain the cylinder, shut off the fuel supply, and run the starter several times to remove excess fuel mixture.

READ Cordless chainsaws

After these steps, you need to replace the spark plug, open the fuel supply and try again.

If there is a noticeable amount of black carbon visible on the plug, this usually indicates a fuel delivery problem. violation of the gasoline / oil ratio, low quality oil or the need to adjust the carburetor.

In this case, the spark plug should be cleaned with a needle or a sharp awl from the accumulated sediment, cleaned with an electrode and sandpaper until a metallic sheen appears and screwed into place. In this case, you need to rely on the tightness of the spark plug gasket.

If the chainsaw

does not start in any case, you need to check for spark in the spark plug. When put on the high tension wire cap, we will put the spark plug skirt on the cylinder and pull the starter as shown in the photo below:

If the blue spark jumps from a distance of 2-3 mm, then everything is in order. If the spark appears only at a distance of 0.5-1 mm, most likely there are problems with the ignition system. If there is no spark, you need to check the high voltage cable using a probe. There was probably a break in the wire.

If all the above steps do not lead to success, try replacing the spark plug with a known good and try starting the chainsaw again.

In addition, the lack of a spark may be due to a violation of the gap between the ignition module and the magnetic flux of the flywheel. The gap should be 0.2 mm. The required gap can be set using a gasket with a diameter of 0.2 mm, which is placed between the flywheel and the ignition module.

Stihl MS 180. The cold starts over a long period of time.

carburetor? There is only one reason: the formation of a vacuum in the tank. Solve the problem, pull out the white plug, clean it.

Why doesn't gasoline come out of the gas tank?

main malfunctions of the carburetor chain saws 180

The video signal of the chainsaw ignition device and its malfunction are shown below (press triangle to play):

Malfunction in the fuel supply system in the chainsaw

If everything is fine with the ignition system, then we move on and check the fuel supply system to the chainsaw.

Fuel supply system malfunction is usually due to one of the following reasons:

fuel filter contamination;
the hole in the tank lid was clogged;
Insufficient amount of incoming fuel mixture.

We disconnect the fuel hose from the carburetor and see if fuel comes out of it or not. If the fuel flows in a trickle then everything is fine. The lid and filter are working correctly. If the fuel mixture does not flow at all or flows very poorly, then the hole in the cover (partition) is cleaned with a needle.

READ How to Adjust the Carburetor of a Huter Chainsaw

The fuel filter is removed through the filling hole using a hook (it can be bent from a wire) together with the suction hose. Empty the fuel tank first. The filter is disconnected, cleaned or replaced with a new one.

It is recommended to replace the fuel filter every 3 months. As for the insufficient amount of fuel mixture entering the cylinder from the carburetor, the reason here may be a violation of the ratio of fuel and air mixed in the carburetor. The main reasons: driving the air filter, movement of the carburetor passages or filter.

Of course, when repairing chain saws, it is necessary to clean the air filter, as it quickly becomes dirty. This reduces the amount of air entering the carburetor. In this case, the fuel mixture at the outlet is excessively enriched.

A dirty filter should be removed very carefully so that accumulated dirt does not fall and enter the carburetor. The filter must be cleaned or washed with water and detergent. Then dry it and install it back.

Carburetor malfunction

If all the actions described above did not lead to success, perhaps the cause of the chainsaw failure is a malfunction of the carburetor.

In this case, it is checked and corrected. However, if you don't have experience doing this kind of work, you should find it through friends or an ad for someone who knows how to do it. Otherwise, you risk being left without a saw. Carburetor. This is a device consisting of many very small parts that can simply fall out and get lost if they are unintentionally disassembled.

A video on how to repair a Stihl MS 250 chainsaw carburetor is below (click the triangle to play):

Chainsaw malfunction

It often happens that during prolonged use, the walls of the exhaust pipe are covered with carbon deposits, which prevents the free exit of exhaust gases.

In this case, remove the muffler (if possible) and wash it with detergent, then dry it thoroughly with a hairdryer.

ATTENTION! Carbon deposits contain carcinogens. During dry cleaning, it can enter your lungs, which poses a threat to your health.

Carbon deposits are usually caused by an incorrect gasoline to oil ratio or the use of poor quality and incompatible oils.

READ How to Check the Oil Level in an Oregon Chainsaw

Read your chainsaw manual carefully to prevent this from happening again.

Malfunctions in the cylinder-piston group

Worn cylinder and piston, scratches and clogging on their surface, wear of piston rings or crankshaft bearings. all this is very serious damage. As a result, they lead to a drop in pressure in the cylinder. In this case, it will be very difficult to start the engine.

Without disassembly, the GPG status can be checked as follows. Remove the muffler and look out the open window. Part of the surface of the cylinder will be visible. To obtain information about the condition of the GPG, compression is measured in the engine using a compressor that must be installed in the spark plug hole. Turn the crankshaft (maybe the starter), read the tool. Compressor readings must be at least 8-9 kgf/sq.cm (or 0.8-0.9 MPa).

If you don't have a compression gauge, you can judge the presence of compression by eye by simply connecting the spark plug socket hole with your finger and pulling the starter, as shown in the photo below:

If there is compression, you will feel like your finger is sucking.

The cause of low compression may be smoked piston rings or their wear.

Chain lubrication system malfunction

Every owner's manual specifies the need to monitor the condition of the chain lubrication system.

As a rule, system malfunctions occur due to clogging of the channels through which lubricant is supplied. If there is a slight oil leak, you can continue to work. But if the oil leak is large enough, it is necessary to check the tightness of the connection between the pipes and the pump connections. Repair leaks with sealant or replacement tubes.

You should also pay attention to the condition of the oil pump. If there are cracks in the body, replacement is necessary.

Below is a video image of the oil pump:

Circuit breaker failure

If the chain brake does not work, the brake band may be contaminated with grease or sawdust from tree sap or hidden space.

The problem can be corrected by cleaning the dirt and replacing the brake band.

As you can see, there can be many reasons why a chainsaw may malfunction. Try to follow the recommendations given in the operating instructions during operation and perform routine maintenance periodically to keep the chainsaw in working order.

How to check the performance of the fuel pump

There is a membrane in the pump body, which during movement ensures the supply of fuel to the carburetor and engine. If the Stihl MS 180 chainsaw does not start, the diaphragm may have ruptured. You can check its integrity by removing the pump cover. If any defects are found during the inspection, the membrane is replaced.

Chainsaw repair Shtil 180

Tool Hold

To properly start the chainsaw into operation, you should hold it in the correct way at the moment of starting.

The position of the saw is very important here. Holding at the moment of launch can be carried out in two ways

In the first case, the saw is placed on a flat surface, the left hand must be held straight and the tool should be held by the upper handle, the right foot should be placed on the protection for the second hand, and the tool itself should be pressed to the ground. In this position, it will be convenient to launch the tool, since your right hand is free, and the tool is fixed quite securely.

Regardless of the position in which you plan to start the saw, be sure to turn on the saw brake.

In the second option, you need to take a standing position and hold the upper handle of the instrument with your left hand, and hold the back handle between your legs. Thanks to this position, you can easily wind up a low-power tool, and it will be securely locked, thereby protecting yourself from an accident.

Chainsaw chain problems

In addition to problems with the engine, the chainsaw may experience operational problems due to a malfunction of the cutting (sawing) unit, consisting of an oil pump, bar and saw chain.

There is no oil getting to the tire

Usually, if oil does not flow to the chainsaw chain, you need to check the channels through which oil is supplied to the tire and clean them of dirt. If the previous steps did not reveal the cause of the problem, then you will have to check the oil pump. To do this you need:

remove part of the chainsaw casing;
remove the coupling;
unscrew the 3 screws and remove the cover hiding the pump;
get to the worm gear gear that rotates the pump shaft.

If the thread on it is worn out, the shaft does not rotate, the pump does not work, and the chain is not lubricated. A worn gear needs to be replaced. You can also remove the oil pump itself and manually try to pump oil through it. If it does not pump, the pump should be replaced.

Chainsaw oil filter

Also, a lack of lubricant may be due to its leakage. You should check how tightly the pipes coming from the oil pump are connected. If the tightness is broken, the tubes are replaced with new ones.

The chain breaks

If the chain breaks while the chainsaw is running, this could happen when it hits a hard object, such as a nail. If the chain constantly breaks, then the reasons may be the following.

Low quality of the metal from which the saw chain is made. It is necessary to buy gas cutter saws from reputable brands.
Chain overheating due to poor lubrication. As a result, the saw overheats, the properties of the metal change, and it breaks under load. It is necessary to check the entire chainsaw lubrication system (discussed above).

You can also learn about the reasons for frequent circuit breaks from this video.

The chain doesn't turn

This nuisance often plagues inexperienced chainsaw owners. They forget to remove the brake after starting the engine. As a result, the chain does not spin, the brake system overheats, and the clutch mechanism fails. The problem is solved by removing the saw from the brake. If the clutch is not burnt out, you will notice the chain turning. Otherwise, the clutch mechanism will need to be replaced.

The chain gets dull quickly

Basically, the reason that the chain becomes dull quickly is the poor quality of the saw. Trying to save money on buying branded chains, chainsaw owners buy saws from unknown manufacturers, or, due to inexperience, purchase counterfeits of well-known brands. It is best to buy a cutting element for a gas cutter in company stores. Stihl saw chains are very popular among owners of this equipment.

The chain doesn't stop

If, when working with a chainsaw, you notice that the saw chain does not stop at the right moment, then this breakdown may have 2 options.

The brake band is dirty. When operating the saw, dirt, sawdust, dust, etc. may get under the band. As a result, the brake mechanism becomes blocked and the chain does not stop when the gas is released. The problem is eliminated by cleaning this unit.
The brake band is worn out. This element of the brake system needs to be replaced.

The chain is jammed

This happens when the drive or driven sprocket wears out. The chain usually starts to jam under load. But without load the saw can rotate. The photo below shows a worn chainsaw drive sprocket.

The next photo shows that the reason why the chain jams must be looked for at the location of the driven sprocket.

But what to do if the chainsaw is completely jammed, and all attempts to pull the starter are unsuccessful? This malfunction sometimes occurs on Chinese-made chainsaws. It is caused by the bolts that screw the engine to the plastic casing of the unit becoming loose due to vibration. These bolts are located directly under the flywheel (magneto). In the photo below, arrows show the location of the problem bolts.

As they unscrew, they begin to rub against the flywheel and can completely jam the chainsaw. The following photo shows the flywheel with some scuff marks from the bolts.

To fix the problem, you will need to remove the flywheel from the engine shaft and tighten the bolts.

The chainsaw cuts crookedly

This problem can occur if the chain is dull or improperly sharpened. This applies to a greater extent to new chainsaws. But if the tire is worn out, then even after replacing the chain you will notice that the saw is pulled to the side. Tire wear can be easily determined by placing it on a level table and applying a square to it, as shown in the following photo.

In this case, you can see that there is a gap of about 2 mm between the tire and the corner. It is because of this one-sided tire wear that the chainsaw cuts crookedly. The problem can only be solved by replacing the tire with a new one.

Shtil saw winding device

Those owners of chainsaws who just received a new tool in the morning, unpacked it and assembled it in accordance with the instructions, but were unable to start it or the engine starts and immediately stalls, are especially distressed. Let us warn you right away - under no circumstances try to disassemble the new engine and do not tear off the warranty stickers. Under such circumstances, it is best to exchange the faulty chainsaw for another, or request warranty repairs.

Standard chainsaw equipment

In accordance with the legislation of most CIS countries (including Russia and Ukraine), electric and chainsaws are subject to return if faults are discovered that were not specified by the seller.

The buyer may also demand a reduction in the price of the defective product, reimbursement of the costs of its repair, or a refund for the defective instrument. The owner of the chainsaw can make these demands only during the warranty period, subject to compliance with all the conditions specified in the warranty card. As a rule, the buyer is given 14 days to identify all faults and shortcomings and contact the seller.

We remove the cup, put the key on the hexagon of the coupling and use the hook to unhook the stretched spring.

We immediately put a new one in its place - it’s simple. We hook one hook of the spring with our fingers, and use the hook to pull the second hook into the hole. It will catch, then we push it with a screwdriver so that it fits into the hole properly.

We turn the crankshaft 1/3 of a turn, put the key on the hexagon again, hold it from turning and also replace the spring with a new one. Next - the third. We put the cup in place and work. You can also check the condition of the springs with your fingers.

The stretched spring allows the weights to move on the cross and can be removed very easily. When we replace the springs with new ones, the clutch should become like a monolith and it is not possible to pull the weights off with your fingers, only if you push against it with a screwdriver.

Question: Is it possible to install a Stihl MS 180 chainsaw instead of a standard 30 cm bar, 1.3 tires from 170 by 30 cm, but with a 1.1 groove? What is the threat of such a replacement?

Answer: In my opinion, only unnecessary consumption of chains.

Still, 1.1 has a shorter tooth (and on some models, much shorter), resulting in fewer sharpenings.

The lack of a spark between the electrodes on the spark plug is the main malfunction that creates problems with starting the engine of the Stihl chainsaw. To identify it, you need to unscrew the spark plug and inspect it. If the spark plug is wet, you should proceed to further troubleshooting.

Location of the spark plug in the Shtil 180 chainsaw

To restore the operation of the saw, no matter the Ural or Shtil brand, you need to know the location of the breakdown.

First, we check and change the unsuitable fuel mixture. If the saw still does not start, then we check further point by point.

The problem is in the candle - we pull it out and dry it. Under no circumstances should you pierce it, as this will lead to a malfunction of the part. 30 minutes after drying, you can insert the spark plug back, first checking to see if there is any fuel left in its place.

Almost all tools are organized in the same way, both foreign (Husqvarna, Makita, Shtil, Partner 350) and Chinese chainsaws, as well as domestic ones (Druzhba, Ural). Therefore, finding the reason why the device does not start or stop is not very difficult.

There are four elements where problems 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 is not working correctly, the saw stops working.

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

Don't forget to look at what the user manual says. It says that when you engage, you need to make sure the emergency stop brake is locked. But starting a saw with a brake is much more difficult, so sometimes it is better not to apply the brake.

As you can see from the manual, there is a fuel tank and engine inside the body, and outside. saw section (bar with chain), handle and starter.

First we need to figure out exactly how the tool is not running. For example, the saw starts, but immediately catches the eye or loses the power of work, the quality cuts.

Possible interruptions occur due to problems in the engine. But I wouldn't recommend taking it apart immediately. It is better to look for the problem using the simplest option.

To restore the operation of the saw, it doesn’t matter the brand Ural or Calm, you need to know the location of the dislocation.

First, we check and change the inappropriate fuel mixture. If the saw still does not start, we check it further.

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The problem is the spark plug. remove and dry. Do not pierce it under any circumstances, as this will cause the part to malfunction. After 30 minutes of drying, you can put the plug back in before checking to see if any fuel is still in place.

The basis of this type of model, as well as all other chainsaws, is the carburetor. But since we are talking today specifically about the Shtil 180 chainsaw, we will not deviate from the topic. So. The carburetor in this model has a single adjustment screw, that is, it is a kind of idle speed adjustment screw. While the jet of the fully loaded load is stationary.

Chainsaw carburetor Stihl 180

In simple terms, we can say that it simply cannot be adjusted (see here), while the full load setting simply cannot be changed. It is important that the carburetor itself was configured at the factory in such a way that, regardless of the conditions under which the chainsaw is directly operated, the air-fuel mixture is supplied to the engine itself.

Let's say the chainsaw operates normally at idle, but when you press the gas sharply it stalls. What could be the reason? It is immediately clear that the issue is not the ignition (lack of spark), because if the ignition was faulty and there was no spark, the tool simply would not start. This means the fuel system remains.

There are a lot of malfunctions in the fuel system, and to determine the exact reason why the Stihl 180 chainsaw stalls when you press the gas, it is necessary to carry out a complete diagnosis of it. We recommend reading about common malfunctions of the Shtil 180 chainsaw and their elimination.

The piston does not fit the cylinder.

The first and most common cause of this malfunction is incorrect carburetor adjustment. You can adjust the idle speed yourself; for this you need to have a Stihl adjusting screwdriver, which is supplied with the unit. The adjustment hole is located on the right side of the Shtil 180 saw on the handle and is indicated by the symbols “-” and “”.

If the Stihl chainsaw does not maintain speed and stalls at idle, you can be almost 90% sure that it has a malfunction in the fuel pump operating system, as a rule, this is air leaking into the crankcase through the pan gasket, or, more often, through the oil seals crankshaft. Air leakage reduces or completely stops the impulse, which is supplied through special channels to the fuel pump of the chainsaw. As a result of this, the Stihl 180 chainsaw does not receive the required amount of fuel and stalls at idle.

Diagnostics can be carried out using a special device called a vacuum gauge.

Very often you can hear the question why a chainsaw stalls at full speed. There may be several reasons. First, you need to consider exactly how the saw stalled. Let's say the tool was working normally and suddenly, for no apparent reason, it suddenly stalled and the starter does not turn over. In such a situation, you can be 100% sure that the chainsaw is jammed and you need to start overhauling it.

The second situation is when the Shtil 180 chainsaw worked normally, then gradually lost power in a short time and stalled, and the cylinder overheated. In this case, the most likely reason is air leakage under the rubber pipe connecting the carburetor to the cylinder or its rupture. The mixture became lean, resulting in overheating. The cause can be eliminated by changing the pipe.

What to do if the chainsaw continues to not start?

Compression in the cylinder;
Compression in the crankcase;
Carburetor operation.

Place your finger on the spark plug hole;
Try to start the chainsaw engine.

By placing your finger on the spark plug hole and pulling the starter, you can check the compression in the cylinder

If you feel that your finger is being pulled strongly into the spark plug channel, then everything is in order with compression. The absence of vacuum in the chamber indicates a malfunction. The cylinder-piston group needs a more detailed inspection, which will give an idea of the condition of the piston and cylinder, piston rings and bearings.

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

If fuel is sucked out of the cap when the chainsaw starter starts, then everything is fine with compression. If not, look at the gasket.

If the fuel is drawn in, then everything is fine - the gasket is intact. Otherwise, you will have to purchase a repair kit and make a replacement. How to do this, watch the video why a Chinese chainsaw won’t start:

Why does a chainsaw stall when you press the gas?

There are a lot of malfunctions in the fuel system, and to determine the exact reason why the Stihl 180 chainsaw stalls when you press the gas, it is necessary to carry out a complete diagnosis of it. We recommend reading about common malfunctions of the Shtil 180 chainsaw and their elimination.

Filter check

The first thing you need to check is the fuel filter.

In some cases, a filter clogged with dirt is unable to pass through the fuel mixture in sufficient quantities. Accordingly, there is a shortage of fuel in the system, which leads to the fact that when you press the gas of the chainsaw, the fuel burns out, and new fuel does not yet have time to arrive, as a result of which the Shtil chainsaw stalls. Also, if the fuel filter is clogged, there may be a noticeable drop in the power of the chainsaw at maximum speed, but this is with minor contamination.

Air filter

On the pages of the World Wide Web, you can find information that the Shtil 180 chainsaw may stall due to severe contamination of the air filter. I would like to refute this not entirely correct information and report that the Shtil MC 180 carburetor is equipped with a compensator, which is designed and installed in order to take in the air necessary for the normal operation of the Shtil 180 chainsaw, bypassing the dirty air filter. Of course, the power with a clogged air filter will drop slightly, but it definitely won’t stall. The power may also drop due to piston wear, which will require repair of the Stihl MS 180 piston chainsaw.

Carburetor

One of the reasons why a chainsaw does not develop speed when you press the gas, but rather stalls, is a malfunction of the carburetor. Let’s say the Shtil 180 saw worked properly, and then it was installed for a long time and was not used. Afterwards it was started, and at idle it works well, but when you press the gas it can stall. Why does it stall? The reason is a stuck carburetor valve nozzle. Of course, this is not 100%, but the probability of such a malfunction is high. We recommend reading the article about the design and repair of the Shtil 180 carburetor.

In order to check the nozzle, you need to remove the carburetor and disassemble it. To remove, you need to unscrew the two nuts securing the air filter and the carburetor, then remove the air filter and the engine control lever, while disconnecting the air damper control rod from the carburetor. Next, you need to slightly pull the carburetor towards you and disconnect the fuel supply hose.

After removing the carburetor, you need to blow it out and clean it of dirt, only after that the carburetor can be untwisted.

It is necessary to unscrew the cover of the main chamber of the carburetor; this is the one on which the compensator is installed on top. Next, use an 8 mm bolt and a length of at least 50 mm. We knock out the valve.

After the nozzle is removed, you can blow it out using a compressor. The valve should only allow air to flow in one direction; if the valve can be freely blown in both directions, it means it is faulty and needs to be replaced with a new one. Reassembling the chainsaw after the valve has been repaired must be carried out in the reverse order of disassembly.

You can see clearly how a carburetor is repaired, or rather, how to correctly knock out the injector valve from the carburetor body by watching the video.

Another common reason why a saw may stall when the speed increases is air leaking into the carburetor. This can only be checked with a special tool, but it is worth noting that if preventive work has not been carried out on the carburetor for a long time, then you can install a new set of gaskets in the carburetor. In some cases, this helps solve the problem of its depressurization.

When disassembling the carburetor to replace the gaskets, you need to carefully inspect its needle valve, press the rocker arm and check its lifting. Sometimes, especially after the Stihl chainsaw has stood for a long time with fuel in the carburetor, the needle may burn to the carburetor body and not perform its functions. Simply put, the needle valve will not allow the fuel mixture to pass through. In this case, the saw will not work.

Chainsaw Shtil Starts Poorly When Cold

Forester Income from waste

Content

Why does a chainsaw have trouble starting?

No matter what kind of saw you purchased from an official representative and entered the Russian market using the official method, it must have an annotation in Russian. We strongly advise you to familiarize yourself with it before you start using a chainsaw.

The chainsaw won’t start, what should I do? Let's start in order. Chainsaw Shtil 180. Doesn't start well. Does not start. Checked for spark. Why the Stihl 180 chainsaw does not start, namely the Stihl 180 chainsaw. About the stihl ms 660 chainsaw. If the saw does not start, it has a bad effect on if you have a Stihl chainsaw. No matter what kind of saw you purchased from an official representative and entered the Russian market using the official method, it must have an annotation in Russian. To avoid subsequent questions about why the chainsaw does not start, we strongly advise you to read the instructions before you start using the chainsaw.

READ Carburetor Adjustment for Chainsaw Shtil MS 660

Before starting the chainsaw, you must definitely install and adjust the saw set (bar, chain and sprocket), otherwise the saw’s clutch will immediately fall out and, accordingly, the clutch will fall out. The chainsaw won't start.

After the mandatory pre-start check and filling with fuel and oil, the saw is ready for use. Next, you need to remove the choke, completely remove the slack in the starting cable and start the tool with a strong jump of the starter (with a sluggish tension, there is a high risk of flooding the spark plug, which will somewhat complicate the next starting tests). If your chainsaw starts sneezing and has trouble starting, then it’s time to adjust the carburetor on the Shtil 250 chainsaw with your own hands. Today about the stihl chainsaw that the Stihl 180 chainsaw does not start and floods the spark plug. If everything is done correctly, the saw starts the first time. Why doesn't the chainsaw start either hot or cold? This one doesn't work well. If this does not happen, read the answer to the question why the chainsaw does not start.

Stihl MS 180. Stihl 180 chainsaw won't start? Reasons and solution! Today, the manufacturer Shtil occupies a leading position among other companies that create vypu. The Stihl ms 180 saw does not supply oil to the chain, no matter what I did, the Chinese chainsaw stihl ms 660. Let’s figure out why the chainsaw starts poorly or does not start, whether it’s cold or not. It takes a long time to start when cold.

Chainsaw

when
cold
doesn’t
start
or
it starts
but very
poorly
, and
the chainsaw only starts
if.

READ Adjusting the Carburetor of the Husqvarna 5200 Chainsaw with Your Own Hands

The chainsaw will NOT start when COLD!!!

The video discusses carburetor repair using a new repair kit of gaskets and membranes, and adjustment.

Your chainsaw or brush cutter won't start?

Recognizable case. This article will try to shed light on such a fundamental process of starting a gas-powered tool.

A little about the fuel mixture. There is no need to save money here. You must understand that the cost of repairing a cylinder-piston group can be 2/3 of the cost of the tool itself. 2.2 doesn't start well when cold. Good evening, I have a problem with the Shtil 180 chainsaw starting when cold, why does it stall. The chainsaw may not start. Perhaps a compelling argument for buying a fuel additive from a well-known brand, for example, STIHL, Husqvarna or Oregon, and 92nd gasoline at a gas station with a good reputation.

Starting a cold engine after storage for 2 days or more or after purchase in a store. When you purchase gas equipment from the right store, they can tell you everything in detail about the startup and operation of the gas tool, and they will also demonstrate it in practice. If this was not the case, it means it was a hypermarket or you were served by yesterday’s schoolboy or student. Our congratulations!

READ How to adjust the carburetor on a Partner 351 chainsaw

And finally, some gas-powered tools have a regular key switch for the ignition, just look to see if it is turned on.

A new chainsaw or gas trimmer (motor cutter) may not start. If you pump fuel, trying to start it from a cold start, then from a hot start. Cool down! Open the carburetor damper to operate during a hot start, and start the equipment while holding the fuel trigger to the maximum, and when starting, try to reduce the speed to a level just above idle in order to warm up the engine of the tool. Usually 30-45 seconds is enough to warm up.

Fuel filter in the tank. The chainsaw does not start well when cold; there is a violation of the sequence of actions when starting when cold. Which chainsaw is better, Stil or Husqvarna, the answer to a common question. Comparative analysis of the most popular chainsaw models from these manufacturers. We need to check its functionality. But don't leave the inlet pipe without a filter.

Source

Checking the fuel system

First you need to check the condition of the fuel filter. To remove it, you need to unscrew the fuel tank cap. Next, aluminum wire with a bent end will come to the rescue. With its help, remove the fuel hose, at the end of which there is a filter.

Chainsaw device Shtil 180

The condition of the filter can be checked by blowing into it. If air does not pass through, then the filter needs to be cleaned or replaced. If air flows freely, you need to look for a blockage in the fuel hose by disconnecting it from the carburetor. The blockage can be cleared mechanically or by replacing the hose.

If the fuel hose and filter are clean, but fuel does not flow to the spark plug, the cause may be a malfunction in the air pulse supply to the fuel pump.

Checking the fuel system

Fundamentally: do not “purge” the engine with the ignition on and an open fire nearby.

Unscrew the spark plug;
Turn the Stihl 180 chainsaw upside down and drain the excess fuel;
In an inverted state, pull the chainsaw starter a couple of times (this way, under the influence of compression, excess fuel will be removed from the cylinder);
Place the spark plug and high-voltage wire cap in place;
Set the engine control lever to the hot start position;
Pull the starter a couple of times and start the engine.

If what remains to be done with the Stihl chainsaw is ok for our client and the cold start method was simply violated, then after “blowing through” it should start. Otherwise, the fault must be found in the carburetor.

Components of the Stihl 180 ms chainsaw

Germany is the country of assembly and production of all original Shtil ms 180 chainsaws. A fake is easy to identify at a reduced price. A Chinese or Polish copy of the Stihl ms 180 will cost two to three times less than the original, and the build quality of such saws, of course, differs from the German one. Lighter, cheaper plastic may also be present.

The branded saw Stihl MS 180 retails for about 4.5-5 thousand hryvnia. The original product is always sold together with a passport. The passport indicates the serial number of the tool and the engine series.

The Shtil ms 180 chainsaw package includes:

semi-assembled chainsaw;
fuel tank;
chain, sprocket, tire;
chain brake;
lever;
passport;
instructions for using the product.

The instructions also indicate the types of lubricant suitable for the Stihl ms 180 chainsaw. The manufacturer offers the following as additional accessories:

oil filling system;
a fuel filling system that makes filling gasoline safe;
control templates, filing;
a holder with which the owner can sharpen chain links with his own hands.

Diagram of MS-180 chainsaw components

Expert advice

When repairing a carburetor, you must remember that it is a complex unit consisting of rings and many parts. This indicates that cleaning and repairs must be carried out with extreme care. If the tool stalls or does not start, then, in addition to the carburetor, it is necessary to check the spark plugs. If they are faulty, they are unscrewed and dried.

Excess fuel can be drained through a special hole. Malfunctions of the Shtil 180 chainsaw and their elimination are partially described in the instructions. After reading the article, you can understand that the candles should be dried for at least half an hour; after this time, the candle can be replaced in place by starting the unit.

How to check if fuel is flowing

Repair of Shtil chainsaw in case of fuel supply system malfunction

unscrew the spark plug;
draw 1–2 ml of fuel into a syringe and pour it into the spark plug hole;
install the spark plug in place and put the cap of the high-voltage wire on it;
set the control lever to the hot start position;
Pull the starter handle several times.

If these actions helped start the Shtil chainsaw engine, but it stalled almost immediately, then the problem really was a lack of fuel supply. To fix it, you need to check the fuel system.

Adjusting the idle speed of the Shtil 180 chainsaw carburetor

The design of the Shtil 180 chainsaw contains many rubber parts. All of them require systematic inspection for cracks and other defects. If they are present, the parts are replaced with new ones.

Another reason for the lack of impulse may be depressurization of the Shtil chainsaw engine crankcase. In this case, the air supply to the pump is reduced or completely stopped.

Troubleshooting algorithm

In all other cases, the search for ignition problems begins from the end and in order. After each step, check the spark.

Replace the old spark plug with a guaranteed working one.
If the model has a removable spark plug cap, remove it, and the exposed spark plug wire is connected to ground with a gap similar to that of a spark plug. They pull the starter. If there is a spark, the problem is in the cap. She is being eliminated.
Change the spark plug wire where it is possible to remove it from the source.
Visually inspect the wires from the switch. Vibration or contact with metal can cause damage. If there are friction points, the wire is replaced, even if there is no external damage to the insulation. You can use a tester or multimeter to check the wire.

This is where minor and easily fixable problems end. If the problem is not solved, then the reason is more serious. Modern coils and ignition systems on most chainsaws are very reliable. They are designed to last even longer than the entire chainsaw as a whole. There are no mechanical moving parts like older cam systems. They are sufficiently insulated from clogging and moisture.

If, due to an accidental manufacturing defect, an interturn short circuit occurs in the coil or the electronics fail, these parts cannot be repaired. Will need to be replaced with new ones.

It is not uncommon for a mechanical failure to occur. Due to wear or destruction of the crankshaft bearing, play appears on it. And then the magnetic rotor begins to touch the body of the ignition system, inside which it rotates. This is a serious breakdown. You will need to “halve” (disassemble) the entire engine, replace the bearing, and put everything back in place.

What to do if the spark plug is flooded on the chainsaw

If you suspect a flooded spark plug, you need to inspect it. Using a spark plug wrench, it is unscrewed and carefully examined. If the spark plug is wet, but there is a spark, then it has definitely been flooded.

Many experienced owners are able to determine with a high degree of probability the current condition of a candle by its color. It is recommended to carry out this procedure regularly.

Light brown soot is exactly what all owners want to see. In this case, the functionality of the chainsaw is not impaired.
Black carbon deposits indicate an unbalanced mixture, namely a lack of oxygen in the fuel chamber. If the situation does not improve, there is a high probability that the chainsaw spark plug will flood again.
If corrosion is detected on the fork or the distance between the electrodes is too large, then most likely a lean fuel mixture is used.

Possible faults

Poor quality fuel

Filters are clogged

Breather clogged

Fuel supply interrupted

Problems with electrical components

Carburetor not adjusted or clogged

Dirty muffler

Poorly lubricated chain

Ignition faults

Signs of ignition malfunction:

Fault location determination:

Diagnosing a fault with a multimeter

Step-by-step ignition diagnostics with a multimeter:

Video review of fault determination using a multimeter

Ignition adjustment

Step-by-step adjustment of the chainsaw ignition:

General information

Main characteristics

Winding device

Saw Shtil 180 Doesn't Start When Hot

Briefly about the main thing

Winding device

Don't start sawing: reasons and solutions

Chainsaw won't start when hot

The Shtil 180 chainsaw does not start. We measure the compression in the cylinder.

Summing up

How to check the receipt of an impulse from the engine crankcase

Return under warranty and post-warranty service

Chinese chainsaw won't start. Diagnostics and repair.

Why Doesn't Gasoline Get into the Chainsaw's Carburetor?

Chainsaw design and general classification of faults

Starting the engine: checking the spark plugs

DIY chainsaw repair: fuel supply system

Why does gasoline not flow from the chainsaw tank to

Chainsaw repair, fuel pump does not work

Troubleshooting muffler problems

Repair of cylinder-piston group (CPG)

Checking the carburetor and signs that it needs adjustment

Calibration algorithm and safety precautions when troubleshooting a chainsaw carburetor

Other chainsaw malfunctions

Fuel supply system repair

Chainsaw Shtil 180 No Fuel Supply

Engine malfunctions

Chainsaw ignition system malfunction

Stihl MS 180. The cold starts over a long period of time.

Why doesn't gasoline come out of the gas tank?

Malfunction in the fuel supply system in the chainsaw

Carburetor malfunction

Chainsaw malfunction

Malfunctions in the cylinder-piston group

Chain lubrication system malfunction

Circuit breaker failure

How to check the performance of the fuel pump

Related video: STIHL saw does not start - reasons

Tool Hold

Chainsaw chain problems

There is no oil getting to the tire

The chain breaks

The chain doesn't turn

The chain gets dull quickly

The chain doesn't stop

The chain is jammed

The chainsaw cuts crookedly

Shtil saw winding device

Related Posts

What to do if the chainsaw continues to not start?

Why does a chainsaw stall when you press the gas?

Filter check

Air filter

Carburetor

Chainsaw Shtil Starts Poorly When Cold

Why does a chainsaw have trouble starting?

The chainsaw will NOT start when COLD!!!

Your chainsaw or brush cutter won't start?

Checking the fuel system

Checking the fuel system

Components of the Stihl 180 ms chainsaw

The Shtil ms 180 chainsaw package includes:

Expert advice