Calm 180 there is a spark but it does not start. Chainsaw won't start

AND world famous company Stihl releases a huge model range quality chainsaws.For domestic purposes and simple work, the Shtil 180 chainsaw was created, which showed excellent performance and reliability. All the best practices of the German company were used here; with a weight of 3.9 kg, the chainsaw easily performed work in the garden. Easy to trim small trees, branches, you can even prepare firewood. But even the highest quality equipment tends to break down, and it happens that the Shtil 180 chainsaw does not start or starts with great difficulty. We tried to collect all the reasons and methods for repairing a German Stihl 180.

No spark

If the chainsaw does not start, and you have not experienced any particular difficulties before, the first thing to do is check the spark plug. There may simply be no spark between its electrodes; this can only be determined after removing the spark plug. We check its functionality; to do this, we stick the spark plug into the cap of a high-voltage wire, and place the metal side of the spark plug on the cylinder (or other metal object). Now we do several manipulations with the starter, and if during them no spark is observed, the problem is specifically in the spark plug.

Attention: Be sure to make sure that the ignition is on, otherwise the spark plug will not show a spark in any case. Also, to make sure that it is the spark plug that is faulty and not the ignition coil, take a similar spark plug and check for a spark on it. If present, the problem can be solved by simple replacement.

Ignition coil malfunction

Repairing the ignition coil is impossible; its design cannot be disassembled. But you can only check the performance of a part with a special device. If there is no spark to the spark plug, do not immediately blame the ignition coil; carry out diagnostics. Some people mistakenly run to the store for a new reel, so first make sure it’s broken and then make a new purchase.

Supplying fuel to the chainsaw

If the Shtil 180 does not start, there is a spark, then first of all we check the presence of fuel in the chainsaw tank. Of course, the problem is funny, but quite common. Next, we check whether fuel is entering the carburetor; to do this, you can disconnect the gasoline hose from the carburetor and pump in gasoline. After several manipulations, gasoline should come out of the hose, but not in a large stream, but in small jerks. If gasoline does not flow or flows poorly, the problem may be the following:

The fuel supply channel is clogged;

Z The fuel filter is directly damaged.

Check out the article where it is described. The described tips apply to Shtil 180.

As unusual as it may sound, even a too full fuel tank can cause this. At greater O m pressure may squeeze out the fuel hose or the necessary vacuum may not be created. Be sure to monitor the quality of the fuel used to proper operation Never leave a chainsaw with gasoline for more than 2 weeks.Long-term storage of fuel in the tank contributes to the creation of resins and the process of polymerization of components.

Faulty crankshaft bearings

If Shtil 180 does not start and the fuel is supplied correctly, you will have to look further, namely into the crankshaft. Its bearings tend to wear out, which is why backlash appears.and trying to shake the flywheel. The fact is that if there is backlash, the flywheel magnets are attracted to the ignition coil,or rather to her contacts.

Repairing and replacing bearings requires disassembling the engine, so this work performed only by masters or people with experience. You should not disassemble the engine if this is your first time.

Floods the spark plug

In some cases, the Shtil 180 starts and stalls, or does not start at all. Then we check the condition of the spark plug; it may be flooded.There can be two reasons for this “overflow” - improper starting of the engine when cold and a malfunction of the carburetor. We are trying to solve the problem with the following steps:

Remove the spark plug;

We turn the chainsaw over to the other side and wait until the excess fuel flows out;

To be sure, we pull the starter several times, so that gasoline will certainly come out of the cylinder;

We return the spark plug to its place, install the cap and try to start the engine again with the starter.

DIY chainsaw repair Shtil 180

Chainsaw Shtil MS 180 designed for inexperienced users to make the operation of this tool as easy as possible. This chainsaw is lightweight and easy to use, and also has a low cost, due to which it is in great demand among the population. With intensive use of the tool, parts wear out, which leads to tool malfunctions. Some of the most common and typical faults can be fixed with your own hands at home. As a rule, users have the following questions: Why does the chainsaw have trouble picking up speed? Why isn't the chain lubricated?

Types of faults, diagnostics, tools for repairs

For Chainsaw troubleshooting you need to have the appropriate tools. This list should include the following tools:

set of wrenches;
set of socket wrenches;
set of screwdrivers;
needle.

Before you begin troubleshooting a chainsaw, you need to accurately determine the causes of the malfunction and localize the location of the breakdown. Since the chainsaw has an internal combustion engine, it is logical to assume that the main malfunctions will be associated with this device. The most common malfunctions encountered during saw operation are:

ignition system malfunctions;
fuel system malfunctions;
malfunctions of the cylinder and piston group;
muffler malfunction;

Malfunctions not related to engine operation are also common. These include the following malfunctions:

brake and clutch malfunctions;
malfunction of the chain lubrication system;
broken starter cord;
drive sprocket wear.

Troubleshooting Engine operation must begin by checking the gasoline level in the fuel tank. If the fuel level is normal, we start checking basic chainsaw systems.

Ignition system

Problems in the ignition system of a chainsaw can be judged by the following signs:

The engine will not start;
the engine starts, but stalls almost immediately;
the engine is unstable;
does not develop full power or stalls.

Checking the ignition system You should start by inspecting the spark plug. The verification scheme is simple. The spark plug must be clean, free of carbon deposits and not filled with fuel mixture. The gap between the electrodes should be 0.5–0.65 mm. Carbon deposits from the spark plug can be removed with a sharp awl; the electrodes should be cleaned with fine sandpaper.

Startup problems may also occur due to damage sealing gasket spark plug or wear. Next, check the spark plug for a spark. To do this, you need to connect a high-voltage wire to it and, holding the spark plug with pliers with insulated handles, attach it to the cylinder with its thread. By pulling the starter cord, check for the presence of a spark. If there is no spark, then the spark plug should be replaced. If there is no spark and new candle, then the problem should be sought in the high-voltage wire.

Fuel system

Problems with the fuel system of the Shtil chainsaw can sometimes be determined by the condition spark plugs. So, if the spark plug remains dry during inspection, this indicates that the fuel mixture does not enter the cylinder. The most common cause is a clogged fuel filter. To repair, you need to remove the fuel hose from the carburetor and see how the fuel flows. If the stream is weak, then you need to remove the fuel filter through the fuel filling hole and clean it. At heavy pollution It is recommended to replace the filter with a new one.

Another common problem is breather blockage. The breather is a small hole in the gas tank cap; you need to use a needle to clean it. Insufficient quantity fuel mixture may be due to a clogged air filter, in which case air does not flow in the required volume, fuel mixture turns out to be too rich, which leads to unstable engine operation. To eliminate the malfunction, the filter must be removed, thoroughly washed and dried, and reinstalled.

If these methods do not help resolve the problem, then the problem may be due to improper carburetor adjustment. Carburetor adjustments should be made with clean air and fuel filters. On most carburetors, adjustment is made using three special screws: maximum speed, minimum speed and idle speed adjustment. Maximum speed screw designated by the symbol H, it controls the main jet. Screw L is designed to adjust the minimum speed and controls the idle jet. Screw S finely adjusts the idle speed.

Sometimes found in carburetors two adjustment screws, which is done to simplify setup. Accurate carburetor setting data should be taken from the instruction manual, but it is better to entrust this operation to specialists, since this is a very complex and responsible job.

Cylinder and piston group

If the engine does not develop full power or does not start, the problem may be insufficient pressure in a cylinder. This can happen due to wear of the cylinder, crankshaft bearings, and also due to the piston rings sinking due to piston wear. Disassembly and reassembly of the muffler is required. If you remove the muffler in a calm weather, you can visually assess the condition of the cylinder and piston group by looking into the hole from the muffler. The overview will be small, but you can get an idea of the condition of the cylinder and piston.

For more accurate diagnostics, you can use a compression gauge, which is installed in the spark plug hole. Having turned the starter over, we determine cylinder pressure. The pressure with a working CPG should be about 8–9 atmospheres. A decrease in pressure leads to a decrease in the power of the calm engine. To determine the full picture of the condition of the CPG, you need to completely disassemble the engine, disconnecting the crankcase from the cylinder and inspecting the piston. To perform this work, you need to study the design of the Stihl 180 chainsaw; it is also recommended to watch videos of this work on the Internet. Reassemble the engine in reverse order.

Chainsaw muffler

In case on idle speed The engine runs fine, but when the speed increases, it stalls, there is a possibility that the muffler is the cause. The muffler may become clogged with fuel combustion products and block exhaust outlet and, as a result, the engine does not develop maximum speed. The reason may be excess oil in fuel, as well as unsuitable or low-quality oil. To eliminate the malfunction, the muffler must be removed, cleaned of carbon deposits and washed with detergents.

Chain brake, clutch, lubrication system

The reason for the failure of the calm 180 may also be faulty chain brake. Most often, the space under the gearbox cover becomes clogged or the brake band wears out. If clogged, remove the cover and clean thoroughly. interior space. Repair in case of wear of the brake band consists of replacing it.

Oil leaks in the chain drive unit are often visually visible, which leads to incorrect operation of the servo. To fix the problem, you need to check the quality of the connection of the fitting oil pump and tubes, inspect them for cracks. If cracks are found, parts must be replaced or sealed with sealant. If there is not enough oil supplied to the chain, then you need to clean the channels for supplying lubricant, which happens quite often.

If the chain of a chainsaw spins almost constantly, and the engine sometimes runs unstably, then the fault should be looked for in the clutch. This may be a broken spring, or a piece of the clutch cam may break off. The problem can be resolved by replacing this unit.

During operation of a chainsaw, parts wear unevenly. To maintain the functionality of the device, it is necessary to promptly replace worn parts, such as a chain, drive sprocket, tire and others. In this case, the Shtil 180 chainsaw will work flawlessly for a long time.

There are many reasons for the breakdown of such a complex instrument. Therefore, it is important to immediately determine why won't the chainsaw start. This will allow you to put it in order yourself or with the help of others in a timely manner. Sometimes the reasons are so trivial that they are rarely mentioned in instructions, but in most cases even small recommendations from there will be useful.

Causes of chainsaw failure

Reason #1 that many users encounter is a manufacturing defect. It is not difficult to determine, because The first start of the chainsaw is impossible. This happens rarely, but do not forget about the legislation and the ability to return the purchase to the seller within the allotted time. The best protective argument is a warranty card with the distributor’s seal and the specified serial number of the device. He will prove the right to a replacement or refund.
But if the device worked perfectly upon purchase and after it, it is worth understanding the probable causes of the failure. The nature of the failure will indicate probable cause. Thus, a chainsaw may not start at all after a long break in operation, may not start after prolonged work, or may stall during the first attempts to start. productive work making sounds only at idle or low speeds.

Why does a chainsaw have trouble starting?

There may be several reasons why the saw does not start well. You need to check them one by one, eliminating one after another, getting closer to the answer. The most simple reason– lack of fuel or switched off ignition. So, you can fill the tank with the fuel mixture and check the start of the ignition system. If this does not help, proceed to checking the condition of the spark plugs.
The lack of a spark from the spark plugs is most often explained by 2 reasons. No. 1 – soot has accumulated on the candle, which needs to be cleaned off. No. 2 – candles wet from gasoline. The first sign of this is strong smell gasoline near the candle. You can dry the candle with a rag, after unscrewing it with a key, or simply wait 10-15 minutes until the mixture evaporates. If the spark plug gets wet often, it is necessary to determine the reason why too much fuel is supplied.
It also happens the other way around, when the candle is dry and there is no smell of fuel near it. The reason for this is that the mixture does not reach the combustion chamber. This process must be restored to resume operation.

Announcement:

Do not forget that candles are consumables and require periodic replacement in case of malfunction.
Air supply also plays an important role in starting. To eliminate the problem, remove the air filter. If necessary, clean it or the sopun if available. The muffler may also need cleaning. The soot and carbon deposits accumulated in it affect the operation.
The reason that is the last thing people think about is an incorrectly composed fuel mixture. But this is exactly what can lead to a bad plant and poor quality work.
It is not recommended to carry out more complex breakdowns yourself; you should contact your nearest service center to resolve them.

Why does a chainsaw start and stall?

If the saw does start, but stalls during the first attempts to do the job, the reason may be different. Reason No. 1 is the chain jamming due to lack of lubrication or problems with the chain brake, which makes further work impossible. In this case, check the oil level in the container. If everything is in order, the reason may lie in the tube leading the fluid to the lubrication mechanism. It can become clogged, break, stopping the flow of oil, or rupture, causing oil to leak out without ever reaching its destination.
Reason #2 – problems with the carburetor. Perhaps its parts have become unusable and it requires cleaning or adjustment. Determining the breakdown in this case is quite difficult. Cleaning a carburetor is a rather complex and monotonous task that not everyone can do. The same applies to checking the condition of its parts. It is better to entrust such an operation to professionals. The only thing you can do at home (but only for some models) is to configure it. All instructions on how to do this are in the accompanying documentation.

The last reason trivial - low level of fuel mixture in the tank. It appears when the chainsaw stalls when tilted. The mystery lies in the fact that when the fuel runs out when tilting, it accumulates in a certain part of the tank. When tilted, the suction tube may end up in an airy part, causing fuel to stop flowing into the chamber.

How to start a chainsaw correctly

Before starting the saw, it must be filled with a mixture mixed in the given proportions so that no questions arise: why the chainsaw does not start. Further, operations vary depending on the model. Details can be found in the instructions for the device. But in general, the process looks like this. If there is a start lock, remove it and clamp the saw brake if necessary, setting it to the inoperative state. Pull out the choke lever. Then they turn on the ignition button and make several jerking movements with the starter, until a characteristic pop comes from the engine, indicating its performance, holding the rear handle with your foot. After this, you need to set the damper lever to the middle position and continue starting with the starter until you start working. Upon completion, the shutter is pushed in and the sawing process begins with the gas trigger.

I have a Shtil-250, old man, a problem has arisen: when it’s cold it starts without problems, but when it’s hot you can’t start it until you burn the unburned mixture through the muffler. I installed a new spark plug, washed and cleaned the filter, and also cleaned the carburetor. Still the problem remains, please tell me how to solve it?

Paul

Checking the muffler

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

Cleaning the muffler usually has a positive effect

When cleaning, be careful: carbon deposits contain carcinogenic substances that, if they enter the lungs, can be harmful to health. The reason for the appearance of carbon deposits is the incorrect ratio of gasoline and oil poured into the tank. Most users prefer to do this “by eye”. But maintaining the exact proportions is not at all difficult: just use a disposable syringe without a needle of the appropriate volume.

Other reasons

Here, first of all, we mean wear of the cylinder, piston, rings, and crankshaft bearings. The failure of these elements ultimately leads to a drop in compression (pressure) in the cylinder. You can check the condition of the CPG at the same time when you remove the muffler. After dismantling this part, you will see a window through which part of the cylinder is visible. If nicks or scratches are visible on it, it will have to be replaced.

Parts for repair can be purchased in specialty stores or on the Internet.

Next you need to check the compression. If you do not have a special tool, remove the spark plug, plug the hole with your finger and pull the starter cord. At good blood pressure the finger will be sucked inside. If you have a compression gauge, you need to insert it into the spark plug hole. Also crank the crankshaft using the starter and look at the instrument readings. Normal parameter– 8-9 kgf/sq. cm (which corresponds to 0.8-0.9 MPa). The reason for low compression may not necessarily be a worn cylinder or piston: sometimes it is enough to replace coked rings.

There is no such master who would refuse his own chainsaws. Extremely useful tool- V in capable hands it performs many tasks. Did you know that carving, or chainsaw wood carving, is a popular art form? But a chainsaw is also very necessary in everyday life. Therefore, do not save money, but choose a reliable manufacturer.

For example, German mark Stihl has enjoyed well-deserved trust and demand for more than 90 years. This brand produces motorized equipment and gasoline for Stihl chainsaws.

First in the world hand saw with a motor appeared in 1926, and was created by the German mechanic Andreas Stihl. Since then, Stihl equipment has not left the list of the most reliable equipment in the world. Therefore, if it does not start Stihl chainsaw, the reason must be serious. But this does not mean that it is insoluble.

Chainsaw Shtil, description and features

Chainsaw, or chain saw, is powered by an internal combustion engine. At the same time, you need to know that the chainsaw is not filled with pure gasoline. A mixture of oil and gasoline in different proportions is used as fuel (depending on the brand).

This information is contained in the factory instructions, which it is advisable to read in advance, and not just after the shtil chainsaw breaks down. And a saw of this brand, believe me, will not break over a trifle. This applies to any model that is classified as follows:

Among the Stihl brand chain saws the most common household model- “Calm 180”. It is equipped with a small gasoline and oil tank (volume 0.25 l and 0.145 l respectively) and weighs less than 4 kg. Compact and relatively lightweight, the STIHL 180 chainsaw produces a noise level of just 98 dB, so your neighbors summer cottage will not be outraged.

Two stroke engine copes well with household loads. This is an excellent “workhorse” for your farm. True, sometimes she can be “moody.”

Typical breakdowns of Shtil chainsaws

Stihl chainsaw owners 180 unanimously recognize it as a good and reliable technology. But they also name several problems that most often occur with this chainsaw:

Oil leakage designed to lubricate the chain. Because of what: at the junction of the hose from the oil tank and the oil pump, the tightness is broken. As a result, the pump draws air instead of oil. How to fix: disassemble the chainsaw into parts. The hose can be replaced or simply restored tightness using silicone glue.
Chainsaw won't start. Because of what: the valve designed to equalize the pressure in the gas tank when fuel runs out is clogged and does not perform its function. A vacuum forms inside the gas tank, which prevents fuel supply. How to fix: open and close the gas tank cap, ventilate the combustion chamber. Remove the candle and dry it. Carefully clean the breather itself with a thin needle.
The candle needs restoration. If it has not yet reached the end of its service life, you can fix it yourself. Be sure to remove all remaining fuel from the tank first. Take the candle out and leave it in the open air, in a dry place, but out of direct access sun rays. The candle will dry for about a day, or at least 12-16 hours. After this, you can return it to its place. Important: do not try to heat the candle. This advice can be found in some outdated reference books, but for modern models calcination will simply ruin the part.
First emergency assistance if the Stihl chainsaw fails. Try these tips - in most cases they work. And if not, read on. We will consider possible problems in more detail.

Why won't my chainsaw start?

The biggest problem that can happen is when chainsaw won't start at all. In this case, it is not clear what the cause of the breakdown is. There are several typical situations, and most likely one of them is your case:

As you can see, in most cases, if your Stihl chainsaw breaks down, you can fix the problem yourself. But don't be too overconfident! If you do not find a suitable description in this article, then it is better to contact the service center.

Professional technicians will certainly diagnose why your Stihl chainsaw won’t start and will expertly fix it. Let your equipment work without problems!

By the way, if you need (Partner 350), which is as popular as Stihl, then you can read about it in the next article.

And for those who like to know more, we suggest watching a video about repairing a Stihl chainsaw