Saw calm is not gaining momentum

Despite the many varieties of modern building materials, wood remains the most in demand. In this regard, chainsaws are in great demand among fellers, owners of their own houses and summer residents.

Among the huge variability of the model range, the most popular among both amateurs and experienced foresters for many years has been the Stihl 180 chainsaw, which is distinguished by simple maintenance, repair and operation. Stihl was founded over 9 centuries ago and began manufacturing gasoline chain saws back in 1926. Thanks to many innovations, unpretentiousness and durability, the tools of this manufacturer are in demand in the global market for woodworking equipment.

The main types of breakdowns and methods for their elimination

Before starting work on diagnosing faults and troubleshooting, it is necessary to prepare the necessary tools.

Due to the fact that the chainsaw is a relatively simple unit, the list of accessories includes the following items:

a set of flat and Phillips screwdrivers;
open-end locksmith keys;
candle key;
socket set with collar
Multitool Stihl.

Stihl multifunctional tool

Fuel system problems

The first step in diagnosing the fuel supply system is to check the level of the fuel mixture in the tank.

The main components of the fuel system chainsaw 180 calm

Even if the owner is sure that gasoline is available, this eliminates the vacuum created as a result of a clogged bypass valve. It is designed to optimize the pressure in the tank with fuel consumption. For the convenience of cleaning the chainsaw breather, a regular medium-sized sewing needle is used.

When inspecting the fuel system, it is worth paying attention to the integrity of the pipes, the tightness of which can be broken by mechanical damage or long-term operation of the unit. Sometimes the cause of the leakage of the mixture and, as a result, not the correct operation of the engine, is the wear of the rubber gaskets and the primer (choke button). In this case, to repair the Stihl 180 chainsaw with your own hands, you need to purchase a repair kit for seals and replace them.

Malfunctions of the starting and ignition mechanism

The cause of a chainsaw malfunction of this model may be the inoperability of the ignition system and the engine start unit.

General view of the ignition chainsaw 180

If there are no deviations when measuring the gap between the flywheel and the module, you need to pay attention to the spark plug.

Most manufacturers, including Stihl chainsaws, recommend setting a gap of 0.2 mm. To do this, you will need a coin-shaped, coin-wire, or flat probe, which can be purchased at any automotive store.

Chainsaw starter Stihl 180 assembly

Characteristics and possible causes of failure. Fixing the problem with your own hands

Chainsaws are quite reliable and lightweight designs. Therefore, if you properly care for them and process them based on the manufacturer's advice, then they fail very periodically and all sorts of breakdowns are quickly eliminated. But if you are faced with this situation and want to personally repair your own instrument without seeking the help of experts, then we will delve into the information provided below.

In fact, it is impossible to unambiguously and accurately determine the reason why the tool does not start or it stops when you press the gas, because there are so many reasons for this. But we should not forget that, since the chainsaw is equipped with a conventional two-stroke engine, conditions such as lubricants, fuel, sparks and air are important for its efficient operation.

Chainsaw fuel tank

It follows that the carburetor is specifically engaged in making the consistency of the fuel-air filter, the filter removes dust from the air, the ignition unit and spark plug make a spark, and gasoline contains lubricant.

That is why it is necessary to look in turn for the circumstances of such a disorder, starting precisely from the mild and gradually moving to the complex. And this is a fundamental factor in proper repair, because a person who, without hesitation, begins to analyze a carburetor, brings him to risk. Because this kind of
unit must be repaired or adjusted directly in special workshops (Read about carburettor adjustment).

It is important that for trouble-free operation of the tool you need to be careful enough directly to the fuel . Because if this mixture is not prepared correctly, then most chainsaws simply will not start. Therefore, each owner will guess to look for the cause of a fuel breakdown. This is why, in order for your tool to always work correctly, you need to use only high-quality gasoline for the mixture.

READ What Chain For Stihl Chainsaw

Muffler

You ask, what is the first? The answer is a muffler. The muffler is responsible for the emission of exhaust gases and extinguishing in their flame. All combustion products pass through it, which over time can clog it. The situation with a muffler clogged with soot is far from unique, but it appears due to the wrong fuel consistency.

With the usual ratio of gasoline to oil, the products of combustion are not saturated with soot so as to clog the muffler. In this case, if the amount of oil is more than normal, excess carbon deposits appear during its combustion. Further, soot accumulates under the piston rings and in the muffler of the Stihl 180 chainsaw. It does not gain momentum when you put pressure on the saw; Thus, a coked muffler is the safest thing that can happen, the greatest harm from excess soot is the need to replace the piston.

How to check the muffler

To check the muffler, it must be removed from the chainsaw. To do this, using an 8 mm head, two fastening nuts are unscrewed and the part is removed.

Read:

Fundamentally: after the muffler is removed, you need to check the integrity of the gaskets between it and the cylinder, since very often they stick and break when the muffler is removed.

You can clean the part mechanically, using screwdrivers or knitting needles, and then blow it well with compressed air. The landing site on the muffler can be cleaned with sandpaper to remove the burnt parts of the gasket.

Strainer in carburetor

The last possible place for a blockage to form is a strainer in a carburetor. In the diagram below, it is indicated by the number 13.

Read:

In order to clean the strainer, you need to remove the carburetor from the Stihl 180 chainsaw. Work begins by removing the top cover of the saw, after which, using an 8 mm head, two fastening nuts are unscrewed. Further, the filter housing is removed from the guides, after which the air damper rod and the engine control lever are disconnected. Lastly, the fuel hose and throttle rod are disconnected, after which the carburetor can be removed from the guides.

The carburetor strainer is installed in the fuel pump chamber, in order to get to it, one screw securing the pump cover is unscrewed and it, together with the gaskets, is removed.

The mesh filter can only be cleaned with compressed air. Any mechanical methods are strictly prohibited, because the mesh is very soft and simply changes shape. Answer: Stihl 180 chainsaw. Repair and treatment of childhood diseases. There is a spark, gasoline is supplied, because The candle is wet, but the saw does not start. How to treat. When you press it, it simply collapses and bends form along the edge of the landing site, through which unfiltered fuel can enter the carburetor.

During the cleaning process, the landing site with the filter installed in it must be half covered with a finger and only then blown with air, otherwise, the mesh may fly away and it will no longer be possible to find it.

Filter check

The first thing to check is the fuel filter.

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

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Stihl 180 chainsaw stalls at idle.

Depressurization of the carburetor and clogging of the nozzle

From time to time, when the screws securing the carburetor cover have loosened or the gaskets have become unusable, a loss of power can also be observed on the chainsaw, in order to exclude the possibility of this malfunction, you need to check the integrity of the gaskets and the tightness of the screws on the carburetor covers. To do this, you need to remove it from the motor (the method is described above) and disassemble it. Because of which the calm 180 does not start on which there is a spark, why the saw does not start. Defective gaskets must be replaced using spare parts from the repair kit for the Stihl MS 180 carburetor.

In the case when a complete check of the fuel supply and exhaust system has been carried out, but there are no results. You need to check the main fuel injector valve. To check, you need to knock it out of the carburetor body. All work must be carried out according to the following method:

The carburetor is removed from the chainsaw.
Four screws securing the cover with a compensator are unscrewed, after which the cover can be removed.
The carburetor is mounted on a wooden lining, after which, using a bolt with a diameter of less than eight mm and a length of 50, it is knocked out into the internal cavity of the carburetor.
Next, you need to pick up a small hose, the inner diameter of which corresponds to or slightly less than the outer diameter of the nozzle and put it on the nozzle.
The next step is to blow inside the hose. If it blows only in one direction, the nozzle is working, if it blows in both directions or not at all, then the valve must be changed.

All of the above actions should help in eliminating the malfunction associated with the fact that the chainsaw is not gaining momentum, otherwise, a full diagnosis at the manufacturer's service center will help.

Chainsaw Stihl 180 Doesn't Gain Speed Stalls

Content

For what reasons Stihl 180 stalls at idle or full throttle

Any tool can break and the Stihl MS 180 chainsaw is no exception. Today we will try to understand such questions as: why the chainsaw stalls with an increase in speed, also at idle and at full speed. Consider the options for diagnosing and troubleshooting associated with this behavior of the Stihl 180 chainsaw.

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Why chainsaw stalls when you press the gas

idling normally

but when you hit the gas hard it dies. What could be the reason? It is immediately clear that the matter is not in the ignition (lack of spark), because if the ignition fails and there is no spark, the tool would simply not start. So that's the fuel system.

There are a lot of fuel system malfunctions, and in order 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. We recommend reading about common malfunctions of the Stihl 180 chainsaw and their elimination.

Filter check

The first thing to check is the fuel filter.

Stihl 180 chainsaw stalls at idle.

Air filter

On the pages of the World Wide Web, you can find information that the Stihl 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 MS 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 a contaminated air filter. Of course, the power with a clogged air filter will drop a little, but it definitely will not stall. The power may also drop due to piston wear, and repair of the Stihl MS 180 piston chainsaw will already be required.

READ Band Saw Techniques

Carburetor

One of the reasons why the chainsaw does not develop speed when you press the gas, but rather stall, is a malfunction of the carburetor. Let's say the Stihl 180 saw worked properly, and then it was put on for a long time and did not use it. After it was started, and at idle it works well, and when you press the gas it can stall. Why is it deafening? The reason is a stuck carburetor injector valve. Of course, this is not 100%, but the probability of such a malfunction is high. We recommend reading the article about the device and repair of the Stihl 180 carburetor.

In order to check the nozzle, it is necessary to remove the carburetor and disassemble it. To remove, it is necessary to unscrew the two nuts securing the air filter and the carburetor, and 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.

Stihl 180 chainsaw stalls at idle.

It is necessary to remove the fuel hose as carefully as possible, and prepare a plug for it in advance, since fuel should come out of it.

Having removed the carburetor, it must be blown and cleaned 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. Further, using a bolt of 8 mm and a length of at least 50 mm. We knock out the valve.

Chainsaw Stihl MS 180 speed problems

Chainsaw Stihl

MS
180
has some nuances that make owners nervous and is expensive.

It is necessary to knock out the valve by placing the carburetor on a wooden stand, this will protect it from damage to the body.

After the nozzle is removed, you can blow it out with a compressor. The valve should allow air to pass only in one direction, if it is possible to freely blow the valve in both directions, then it is defective and must be replaced with a new one. To assemble the chainsaw after the valve has been repaired, it is necessary in the reverse order of disassembly.

You can see clearly how the carburetor is being repaired, or rather, how to properly knock out the nozzle valve from the carburetor body by watching the video.

READ Poulan Chainsaw Starts And Stalls

Another common reason why the saw may stall as the rpm increases is air leaking into the carburetor. It is possible to check this only with a special tool, but it is worth noting that if maintenance work with the carburetor has not been carried out for a long time, then a new set of gaskets can be installed in the carburetor. In some cases, this helps to solve the problem with its depressurization.

The Stihl 180 chainsaw does not develop speed for the reason.

When disassembling the carburetor to replace the gaskets, you need to carefully inspect its needle valve, press the rocker and control 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.

Why does it stall at idle

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 comes with the unit. The adjustment hole is located on the right side of the Stihl 180 saw on the handle and is marked with the symbols "-" and "".

If the Stihl does not keep speed and stalls at idle

, you can be almost 90% sure that it has a malfunction in the fuel pump operation system, as a rule, this is air leakage into the crankcase through the pan gasket, or, much more often, through the crankshaft oil seals. Air leakage reduces or even completely stops the impulse that 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.

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

The Stihl 180 chainsaw does not gain momentum and stalls.

The second way to check the performance of the oil seals is to pour gasoline into the engine crankcase and look at them, if the oil seals leak gasoline, then they cannot provide normal pressure in the crankcase, which will make idling impossible. And when working at high speeds, with leaky oil seals, there is a possibility of jamming of the crankshaft bearings.

READ Which Chainsaws Are Reliable And Inexpensive

The algorithm for checking the crankcase and seals Stihl 180 for leaks is as follows:

The top cover is removed.
The air filter housing and carburetor are dismantled.
The chainsaw handle is removed.
The starter is untwisted and removed.
On the side opposite from the starter, the side cover and the drive sprocket are removed.
A piston stopper is installed in the candle hole or a cord from an old starter with knots tied to it is stuffed into the cylinder.
The flywheel and clutch are unscrewed, after which the parts are removed. It is worth knowing that the chainsaw clutch has a left-hand thread and unscrews clockwise.
Remove the oil pump drive gear.

Having disassembled the Stihl MS 180 chainsaw, you can see the oil seals, after that it is necessary to fill the crankcase with gasoline and check for leakage. You can fill the crankcase through the fuel window in the cylinder, for this the piston must be raised as high as possible. If leaks are found, it is necessary to replace defective seals, or re-sealing the pan. You can assemble Stihl 180 following the reverse sequence of the algorithm.

Calm 180 does not gain momentum stalls.

Why does it stall at full speed

Very often you can hear the question of why the chainsaw stalls at full speed. There may be several reasons. First, you need to consider exactly how the saw stalled. Suppose the tool worked normally and suddenly, for no apparent reason, it abruptly stalled and the starter does not turn. 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 Stihl 180 chainsaw worked normally, then gradually lost power and stalled in a short time, and the cylinder overheated. In this case, the most likely cause is air leakage under the rubber pipe connecting the carburetor to the cylinder or its rupture. The mixture was lean, resulting in overheating. You can eliminate the cause by changing the pipe.

Conclusion

If the Stihl MS 180 chainsaw stalls at idle, does not gain power when you press the gas, or even stalls at full speed, it is necessary to diagnose the fuel system and check the crankcase for leaks. You can do it yourself, but you need to have certain skills. If you are not familiar with two-stroke saws, it is better to turn to specialists, because this technique is quite capricious and any mistakes are costly.

Source

Why the chainsaw does not slow down

There may be several reasons why the chainsaw does not slow down:

broken throttle spring
wedging of the gas trigger;
throttle linkage bent ;
the corkscrew of the throttle shaft is lost, as a result of which it wedges.

It is not difficult to solve all these problems, you need to conduct a thorough inspection and accurately determine the cause, and then change the faulty part. As a rule, if the chainsaw is gaining momentum well, idling and has normal power, then the problem with the fact that it does not slow down is purely mechanical. And finding and fixing a mechanical problem is much easier than identifying and stopping air leaks in the crankcase of a chainsaw.

Why does the chainsaw immediately stall and swell when you press the gas

Repair saw after ten tanks. What sellers are silent about.

The Stihl MS 180 chainsaw has some nuances that make owners nervous and waste them on the road.

Chainsaws are quite reliable and simple in design. Therefore, if you properly care for them and process them based on the recommendations of the manufacturer, then they fail, very rarely and all sorts of breakdowns are quickly eliminated. But if you are faced with this situation and want to personally repair your tool without seeking the help of professionals, then let's delve into the information provided below.

Chainsaw fuel tank

Therefore, the carburetor is directly involved in the preparation of the fuel-air mixture, the filter cleans the air of dust, the ignition unit and the spark plug create a spark, and there is grease in gasoline.

That is why you should look for the causes of these types of failures in sequential order, starting directly with simple ones and gradually moving on to complex ones. And this is an important factor in the correct repair, since a person who, without hesitation, begins to analyze a carburetor, brings him to risk. Since this unit needs to be repaired or adjusted directly in special workshops (read about carburetor adjustment).

READ How to Check Screwdriver Battery Banks

An important fact is that for the tool to work smoothly, you need to be very careful about the fuel itself. Because if this mixture is not prepared correctly, then most chainsaws simply will not start. Therefore, each owner will guess to look for the cause of a fuel breakdown. This is why, in order for your tool to always work correctly, you need to use only high-quality gasoline for the mixture.

Otherwise, overlapping the mixture directly in the canisters will cause it to lose all of its octane properties, and this will lead to significant problems with the tool.

The chainsaw stops when you press the gas due to the fact that there is no spark. This can happen when there is not good contact between the tip of the spark plug and the (high voltage) wire. However, if this type of connection works correctly, but there is still no spark, then the whole reason. This is an incendiary block (electronic). It is important to note that parts of this type cannot be repaired, so they can only be replaced.

Don't forget that by examining the spark plug, you can get a lot of information about chainsaw failure. Because if its surface is dry, then the reason for this is the cylinder, which does not directly enter the fuel. That's why you'll have to go through the entire spectrum of his presentation step by step.

Conclusion

When the first signs of power loss (reduction in speed) appear with the Stihl MS 180 chainsaw, in no case should you continue to work, but you should immediately contact a specialist or diagnose and fix the problem yourself. There are not so many reasons for power loss and you can cope with them even without certain skills. The main thing is to calmly analyze the behavior of the saw and find out the reasons why it stopped pulling (speed dropped), and fixing the problem is already a simple matter.

The Stihl MS 180 chainsaw is positioned by the German manufacturer as a tool for small jobs, with an operation of up to 20 hours per month. The chainsaw is designed for use in garden beautification, site clearing, firewood harvesting and other common operations for sawing timber and wood.

Air filter

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Chainsaw Stihl MS 180. Model classification according to technical parameters

The Stihl MS 180 chainsaw corresponds to the light class due to the small weight and volume of the oil and fuel tanks.
The tool is equipped with a two-stroke engine with sufficient power for heavy operations.
The height of the noise produced is average up to 98 dB, which is higher than the noise from colloquial speech - 76 dB.
Model weight 3.9 kg. Mass / power ratio 2.6. This is the highest coefficient for a non-professional tool.
Power 2 l. C. Either 1.5 kW.
The volume of the oil tank is 0.145 l.
The volume of the fuel tank is 0.25 l.
Tire 350 mm. In 0.325 inch increments.

The saw does not develop speed, does not develop power.

For repair, they brought a Stihl 180 chainsaw

.
Chainsaw Stihl 180 does not develop
speed. After visual inspection

Mounting the Ergostart easy start system in the tool, equipment with a quick tensioning device for the cutting chain, an electronic ignition system - these modern innovations are more common in semi-professional chainsaws and are not typical for the Stihl class, nicknamed " hobby class" in Europe. The competing Oleo-Mac 937 has only an electronic ignition system, while the Husqvara 137 has only a LowVib anti-vibration system.

Vibration neutralization is achieved by four shock absorbers made of dense, elastic rubber. The vibration index is 4.3-7.2 m / s 2. For comparison: a chainsaw of a similar light class Husqvara 137 gives a vibration characteristic of 4.9-7.7 m / s 2 and this is with an anti-vibration system. And the Oleo-Mac 937 model gives a vibration level indicator of 5.2-5.5 m / s2.