Why does a chainsaw stall at idle?

Does your chainsaw stall at idle? There is an exit

If the saw starts to stall at idle, then there are a priori several reasons, and it will be easy to find out even for a novice owner if you follow the recommendations of our specialists and check everything competently and delicately. So, the reasons why a chainsaw stalls at idle may be the following:

reduction in the capacity of gasoline and air filters;
malfunctions in the ignition system, also referred to as its abnormal operation;
spontaneous change in carb settings;
elements of the fuel supply system are faulty;
the muffler or exhaust ducts are clogged;
the occurrence of defects on the piston, cylinder or other elements of the CPG, defects on the valve;

Before checking the insides of the saw to find out why the tool stalls at idle, you need to inspect all its external components for any deviations, which may include possible deformations, and also check for the presence of fuel in the tank. Let's consider each of these situations:

We check and repair filters. If the fuel or air filter is clogged, the engine receives insufficient amounts of air or fuel, or does not receive one of the elements at all, and accordingly cannot operate fully. We remove the fuel line hose from the carb fitting and direct it into a working container. Click on “paging” several times and look at the result. With a clean fuel filter, gasoline flows evenly, clearly, without jerks and vice versa. To check the air filter, you need to remove it carefully so that sawdust and dirt do not get into the carb. After washing it, blowing it or replacing it with a new one, we analyze the result to see whether the problem was in two or one of the filters.
We check the ignition system and the spark plug itself. Its poor condition can cause the saw to fail to operate at idle speed, if it stalls when you give it gas or even fails to start at all. So, the candle could have been filled with fuel; a spark does not occur due to a huge amount of carbon deposits or a burnt-out spark plug element; a spark does not occur if the gap between the electrodes is violated (too large or small); a dry spark plug will indicate a lack of gasoline in the piston cylinder; Incorrect carburetor adjustment and a clogged air filter can be determined by the presence of black carbon deposits on the spark plug and soot on its electrodes.
Why, after checking the ignition system and filters, the saw continues to stall at idle - the cause can only be the carburetor. You need to find three adjustment screws, among which one is responsible for maximum speed, the second for minimum speed and idle speed (the screw is called “T”). It must be configured according to the recommendations, strictly according to the instructions for each individual device. If even adjusting the idle speed did not help, and the saw continues to stall at the same speed, proceed to disassembling and inspecting the whole crab. We describe how to do this in our articles.
Malfunctions, breakdowns, clogging of the chainsaw muffler. The last option, which provokes situations at idle when the saw stalls. A muffler contaminated with sawdust and dirt, with adhering oils and exhaust gases, loses its throughput. If it is not cleaned and replaced in time, the engine will begin to “choke.” All elements associated with the muffler must be gently soaked, carefully cleaned and blown with compressed air, and installed in their place. At this moment, cover the engine with a rag to prevent dust from entering.

If your Husqvarna saw or Shtil power tool stalls at idle speed, we have presented you with all the existing testing options. It is also important to correctly assemble all the parts during disassembly in their original place, drain the gasoline, if any, replace it with a clean mixture and try to start the saw. Spare parts for chainsaws can always be ordered from the KosiKosa service.

Chainsaw Shtil 180 Stalls at Idle

What to do if the chainsaw stalls at idle

The chainsaw stalls at idle speed: many owners of this tool face this problem. By its design, the saw is a fairly lightweight tool. But there are times when it fails. The main problem in troubleshooting is determining the correct cause of abnormal operation . Once the cause is identified, eliminating the defect is usually quite simple.

Circuit diagram of a chainsaw.

Content

Probable reasons for failure

The power unit of all chainsaws is a single-cylinder internal combustion engine. Devices of this type are characterized by such malfunctions as violations of intra-cylinder compression, changes in the fuel mixture ratio, incorrect ignition operation, and low-quality fuels and lubricants. If the saw does not start when hot, it is very bad when the Calm 180 chainsaw starts. The main problems in the operation of the power unit are the following:

the engine runs stably at minimum speeds, but stalls when the speed increases;
the start-up occurs normally, but the idle speed is unstable and stalls quickly;
won't start.

Electronic ignition circuit for a chainsaw.

Abnormal idle operation can be caused by various reasons. They can be divided into several positions:

reduced filter capacity (gasoline and air);
abnormal operation of the ignition system :
the carburetor settings changed spontaneously;
malfunction of fuel line elements;
exhaust channels and muffler are clogged;
defects of the piston, cylinder, valves.

Repairs should begin with an external inspection and checking the presence of fuel in the tank.

Checking and repairing filters

The engine may run rough or stall if there is not enough fuel or air. All offers from online stores for stihl ms 180 calm or hs with chainsaws. Causes: clogged air or fuel filter. To check the fuel filter, you need to remove the fuel line hose from the carburetor fitting and direct it into a container. Original chainsaw stihl 180 video stihl 180. Then press the fuel pump several times. If the fuel is pumped normally, in clearly defined doses, without dirt, then the fuel filter is working properly. If the stream is weak or fuel is not pumped at all, the filter needs to be replaced or, if possible, cleaned.

READ How to Measure Chainsaw Chain Length

Clogging of the fuel filter with sawdust is one of the reasons for chainsaw breakdowns.

The device must be removed from the fuel tank (after draining all the fuel from it). On most models, the fuel filter can be pulled out with a wire hook through the neck. If the filter design is dismountable and can be cleaned, it must be disassembled and washed in accordance with the manufacturer’s recommendations. Why does the chainsaw not start or stall at idle? There are times when a chainsaw stalls at idle. Otherwise, replace it with a new filter.

Similar problems can arise when the air filter is clogged with dust, sawdust, or dirt. To finally prepare the carburetor and how. However, in calm weather 180? Causes. If there is insufficient air, the fuel mixture will be enriched and the fuel combustion process will be difficult.

To check, remove the filter. During operation, precautions must be taken to prevent dust from entering the carburetor. The device must be cleaned and rinsed in warm water with added detergent. After drying, if possible blow with low-pressure compressed air and reinstall. If the chainsaw works normally, then the cause has been eliminated; if not, you need to look further.

If the tool is used continuously, it is recommended to replace the filters of the fuel and air systems after 3 months.

Chainsaw Stihl MS 180 problems with speed

Chainsaw Stihl

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

Repair STIHL MS 180 / disassembling and assembling carburetor / stalls at idle

In this video you will learn one of the breakdowns in which a chainsaw

does not work at low
speeds
and does not start

Checking the spark plug and ignition system

According to manufacturers' recommendations, the spark plug should be changed annually, regardless of the intensity of use of the tool. Failure to follow these tips leads to a completely natural result: failures at idle speed and subsequent failure.

Typical ignition system defects are as follows:

Faulty chainsaw spark plugs.

The spark plug was filled with fuel at the time of start-up. It is necessary to remove it from the socket, dry it, and, if possible, blow it with compressed air. Drain the remaining fuel from the cylinder through the installation hole and blow it out with compressed air. Then install the spark plug, connect the high-voltage wire, and start it.
No spark at the spark plug electrodes. The lawn mower stalls at high speeds. Here the trimmer on the chainsaw stalls. The price for a repair kit for a Sthil 180 carburetor ranges from 200 to a sthil ms 180 chainsaw chain. You need to disconnect the high-voltage wire and check for a spark on it. If the spark is normal, check the connection and eliminate any defects found. The absence of a spark on the high-voltage wire indicates a malfunction of the ignition unit. This device cannot be repaired; it must be replaced with a new one.
The gap between the spark plug electrodes is broken. This parameter for different types of devices can range from 0.2 to 0.5 mm. The car stalls at idle for some reason, which leads to malfunctions at idle. Checking and adjustments must be performed using a special probe or caliper. Why does the Stihl 180 ms 180 chainsaw stall at idle and stall at maximum speed. The required value can be found in the operating instructions for the tool.
By the appearance of the candle, you can determine the direction of the search. If the spark plug turns out to be dry after several attempts to start the engine, it means that gasoline is not entering the cylinder. It is necessary to check the fuel supply system and carburetor.
The presence of black soot or carbon deposits on the electrodes indicates incorrect carburetor adjustment or a clogged air filter. The chainsaw stalls at idle. Possibly low-quality fuel with a high oil content is used. During normal operation of the ignition system, the electrodes have a uniform gray color and a brown coating on the insulators.

READ No Spark on Chainsaw Partner

Carburetor check and repair

The operating principle of a chainsaw carburetor.

If checking the ignition system , fuel filters, and muffler did not produce tangible results, the tool still does not want to work normally at minimum speed, you need to check the carburetor.

To adjust the operating modes, there are three screws on the device body designed to set the minimum rotation speed, maximum speed and idle speed.

On many models, manufacturers install only the idle air adjustment screw to avoid incompetent attempts to adjust the device. In all versions of the device, adjustment must be performed exactly according to the manufacturers' recommendations.

If adjusting the device does not restore normal operation of the instrument, you need to completely disassemble the device and inspect it. It should be understood that a carburetor is a rather complex device; if you lack experience, it is advisable to contact specialists.

When disassembling, it is important to carefully inspect and wash all jets, air and fuel channels, and filter mesh. Damaged elements must be replaced with new ones. The jets must be cleaned with soft wire of the appropriate diameter.

It is advisable to carry out work in appropriate conditions. The carburetor contains many small parts, the loss of any of them will render the device inoperable.

READ Video Review of Chainsaws Shtil

Muffler inspection and repair

Clogged mufflers should be left to soak in warm water and detergent, then wiped thoroughly and dried.

A malfunction of the muffler leads to a drop in the power of the tool during operation and stops in idle mode. Why the Shtil 180 chainsaw does not start: reasons. This article breaks down everything on how to sharpen a Shtil 180 chainsaw, and with what method. Despite the apparent simplicity of this detail, it is also important to keep an eye on it. Quite often the muffler becomes clogged. During operation, it is possible that wood dust, sawdust, and resin particles may get on the grate. High temperatures cause them to stick and accumulate; exhaust gases also form deposits on the surfaces of the spark arrestor and other parts. The layer that increases over time reduces the throughput of the muffler and interferes with the normal removal of exhaust gases. The engine, figuratively speaking, is choking.

Repairing this unit is not difficult and is within the capabilities of many tool owners. The device should be removed from the engine, the holes should be covered with a rag or other material. If the resulting layer is too hard, all parts can be left to soak in warm water and detergent. After the plaque has softened, the parts should be washed with a rag or soft brush and wiped thoroughly. The chainsaw stalls when you press the gas, the chainsaw calm stalls when the chainsaw calm 180? Inaccessible areas can be blown with compressed air or dried with a hairdryer. The use of mechanical means of removal is not advisable.

For normal operation of the muffler over a long period of operation, you should use lubricants recommended by the manufacturer, monitoring their expiration dates. The mixture must be prepared immediately before work and consumed completely.

Conclusion on the topic

Chainsaws, like most tools, require timely maintenance and care.

Failure to comply with this rule leads to tool failure, material costs, and loss of precious working time at the most inopportune moments.

Source

Useful tips from Kosi-Kosa specialists

If you already understand the reason why your saw stalls at idle , but don’t yet know how to disassemble or remove a separate part, say, a carburetor, watch the video from other articles from our specialists, read the step-by-step instructions in the articles. We also recommend that you treat all moving elements with extreme caution to avoid injury. Other important recommendations include:

mandatory draining of gasoline before disassembling even external elements;
cover the hole in the engine with a rag so as not to clog it;
disassemble the carburetor on a dry, clean surface, and pre-record the number of revolutions of the other screws so as not to lose all settings;
reassemble everything in the exact order as it was disassembled, even putting the bolts in their “native” place.

Read also: How to make rollers for a profile pipe

At idle, your saw will no longer stall if you carry out the procedure correctly. What to do when a power tool stalls in other situations - the KosiKosa power tool store will definitely tell you in our articles.

Owners of chainsaws sometimes have to deal with the fact that the saw, for no apparent reason, stops working normally. In our article we will try to figure out why the chainsaw stalls in various operating modes, as well as describe how the malfunction can be diagnosed.

The chainsaw stalls under load - reasons and solutions

A common reason that the saw stalls when you give it gas is that the factory carburetor is not set correctly. Another sign of a malfunction is increased air leaks through the holes in the carburetor gaskets and oil seals located next to the crankshaft.

To fix this problem, it is best to take the chainsaw to a service center, since diagnostics will require special equipment. If this is not possible, then you can try to fix the problem yourself. To do this, you will need to disassemble the carburetor and check its tightness. You also need to inspect all seals and gaskets. If necessary, all worn seals will need to be replaced.

If the cause of the malfunction is not the poor condition of the seals, then you can begin adjusting the standard carburetor of the saw.

Why does a chainsaw stall when heating up?

The situation in which a chainsaw starts up when cold, but may stall while warming up, is familiar to many who deal with them. The main reasons for this behavior of the saw are as follows.

The ignition module (coil) is faulty. You can determine the malfunction by checking the spark first on a cold engine, and then on a hot one. If there is no spark on a hot engine, then you should try to fix the problem by replacing the ignition coil.
The chainsaw carburetor is not set correctly (fills the spark plug hot). You can determine the problem by how the saw starts when cold. If for a cold start it is not necessary to close the air damper, and the engine starts without a preliminary flash, then the fuel mixture is not formed correctly and after the engine warms up, the fuel floods the spark plug and makes starting impossible. The problem is eliminated by adjusting the carburetor.
The spark plug is faulty. In such a situation, similar to a faulty ignition coil, the spark disappears when the engine heats up. It is worth trying to replace the spark plug with a new one, and if this does not help, then you need to check the ignition coil and the gap between it and the flywheel.

You can check the ignition coil using a multimeter or by replacing it with a known good one. Checking the primary and secondary windings with a multimeter is carried out in resistance measurement mode. The resistance of the primary winding, the working coil, is 1 kOhm - the secondary is 4 kOhm.

Why won't my chainsaw start?

If defects occur, it is necessary to check the serviceability of the components.

If a new chainsaw does not start, you should check the presence and supply of fuel, the occurrence of a spark on the spark plug, the functioning of the exhaust valve, and the condition of the filters. The operation of the saloon's stalling device built into the fuel cap may also be disrupted.

The reason that a Chinese chainsaw does not start may be poor-quality equipment. There may be various malfunctions or incorrect assembly. Some items arrive defective. If the inspection does not reveal any problems that you can fix yourself, you can replace the saw using the warranty card.

In the cold

The reason why the device does not start when cold is often a violation of the engine starting sequence.

You should read the instructions: manufacturers indicate how to properly start a chainsaw.

To enrich the fuel, you must first close the choke. After this, fuel is sucked in. A special primer is used for this. Then turn on the ignition. Before the engine fires for the first time, you need to make several movements of the starter. The damper opens and the device starts. If the sequence is broken or any step is skipped, incorrect operation may occur.

If your chainsaw stops starting, the likely cause is a problem with the fuel system. Starting problems can occur due to an incorrectly adjusted carburetor, clogged line and fuel filter. The quality of the fuel also matters. If the fuel is diluted with water, the device will start poorly or not work at all. The mixture must be fresh.

Read also: Types of outdoor television antennas

A possible cause of problematic starting is an engine malfunction. Wear or breakage of a part leads to undesirable consequences: decreased compression in the cylinders and other troubles. It is recommended to contact specialists with such problems, since it is difficult to diagnose and correct the breakdown on your own.

Hot

If the chainsaw has difficulty starting when hot, you should begin inspecting the tool with the spark plug. You will also need to check the spark on the spark plug.

For the device to work properly, the spark plug must be dry. When it is wet, sparks do not occur at the contacts. You can try replacing the part with a new one.

If there is a spark and the spark plug is working properly, try looking for a problem in the fuel system. If a visual inspection fails to detect the cause of the breakdown, the carburetor should be removed. If the amount of fuel exceeds the permissible limit, the device will not work. The candle should be wet. The spark plug hole should be turned down. If the fuel mixture flows, the reason why the chainsaw does not start when hot is due to excess fuel.

Why does a chainsaw stall under load?

In some cases, the chainsaw is unable to work normally when under load and simply stalls. A common reason for this behavior is improper carburetor adjustment, or air leakage through the crankshaft seals or carburetor gasket. This behavior can also occur due to a leak in the carburetor.

It is best to diagnose the cause and eliminate the fact that the chainsaw starts and stalls under load at a service center, since a special tool is needed to check the tightness of the carburetor and engine crankcase.

A saw that is unable to operate under load will also be unable to maintain idle speed. They will "float". Diagnostics begins with checking the crankcase and carburetor for leaks. If air leaks are detected through the crankshaft seals, they must be replaced. If air leaks are detected in the carburetor, the cause can be eliminated by installing a repair kit of gaskets.

Only after the above actions have not yielded results and the engine crankcase and carburetor are sealed, can you begin to adjust the carburetor.

The reason for this algorithm is as follows: if air leaks from the crankcase are not eliminated, but the carburetor was simply adjusted to ensure normal engine operation, then the fuel mixture will contain more fuel than is required with a sealed crankcase, which in turn will significantly increase its consumption. Also, most likely, carbon deposits will appear in the engine, which will also negatively affect the further operation of the chainsaw.

In some models of chainsaws, to ensure the operation of the fuel pump, special hoses are installed that transmit an air impulse from the engine crankcase to the carburetor fuel pump. If this hose becomes frayed, the saw will idle unevenly and will not operate at all under load.

Owners of household chainsaws HUSQVARNA 137 and HUSQVARNA 142, in case of any deviations in engine operation from the norm, should first check the pulse hose, since this is considered the most common cause of breakdown of these chainsaws.

A video showing how to replace a defective impulse hose on a HUSQVARNA 142 chainsaw with your own hands can be viewed below. It shows step-by-step the process of disassembling the saw, shows the impulse hose and outlines the consequences of its improper functioning HUSQVARNA 142.

Husqvarna. Works poorly, stalls. Interesting case

Husqvarna chainsaw repair

.Works poorly,
stalls
. Interesting case.

Owners of household chainsaws HUSQVARNA one hundred thirty-seven and HUSQVARNA one hundred forty-two, in case of any deviations in engine operation from the norm, should first check the pulse hose, since this is considered the most common cause of breakdown of these chainsaws.

Read also: Flat drive belt for machine tools

Why does the chainsaw not pick up speed and stalls?

If the chainsaw is unable to gain speed a minute after starting or stalls when the gas trigger is pressed, most likely the carburetor or engine crankcase is leaking. As in the previous case, the problem can be solved by checking for leaks and adjusting the carburetor.

If your chainsaw does not pick up speed and stalls after it has been running normally for about 5 minutes, the cause may be a defective fuel tank breather. The vacuum created in the fuel tank during operation of the tool does not allow the engine to receive the necessary amount of fuel for its normal operation, and for this reason it will be unable to gain speed or stall. In this case, if you stop the tool, open and close the fuel tank cap and start the chainsaw again, the tool will again work normally for about five minutes, after which it will stop picking up speed or stall.

The reason that the chainsaw does not pick up speed may also be excessive carbon deposits in the muffler, which makes it difficult to release exhaust gases, thereby reducing engine power and speed.

If you want to check the tightness of the crankcase, but do not have a special tool, you can use the following testing method.

Algorithm for checking the crankcase for leaks

Remove the side cover and bar from the chainsaw.
Unscrew the spark plug and insert a string with knots into the cylinder through the spark plug hole, thereby stopping the movement of the piston and crankshaft.
You can use an old cord from a starter as a cord with knots, tying knots on it every 3-5 cm.
Unscrew the chainsaw drive sprocket.
Remove the oil pump cover and the pump itself.
Remove the starter from the chainsaw.
Unscrew and remove the flywheel.
Remove the carburetor.
Using a syringe, pour gasoline into the crankcase through the hole under the carburetor in the cylinder, while observing the crankshaft seals. If gasoline flows through them, it means the seals have become unusable and need to be replaced with new ones.
It is better to entrust the installation of oil seals to professionals.

An indirect sign of crankcase leakage is oil leaks in the area of the seals.

Algorithm for checking the crankcase for leaks

Remove the side cover and bar from the chainsaw.
Unscrew the spark plug and insert a string with knots into the cylinder through the spark plug hole, thereby stopping the movement of the piston and crankshaft.
You can use an old cord from a starter as a cord with knots, tying knots on it every 3-5 cm.
Unscrew the chainsaw drive sprocket.
Remove the oil pump cover and the pump itself.
Remove the starter from the chainsaw.
Unscrew and remove the flywheel.
Remove the carburetor.
Using a syringe, pour gasoline into the crankcase through the hole under the carburetor in the cylinder, while observing the crankshaft seals. If gasoline flows through them, it means the seals have become unusable and need to be replaced with new ones.
It is better to entrust the installation of oil seals to professionals.

An indirect sign of crankcase leakage is oil leaks in the area of the seals.

Why does a chainsaw start and immediately stall?

The chainsaw starts and immediately stalls; the reason for this behavior may be hidden in the carburetor. A malfunction of the fuel pump or a malfunction of the main fuel jet may cause this behavior of the saw. The inability of the chainsaw to operate after starting requires a full diagnosis at a service center.

Read also: Potato planter for MTZ walk-behind tractor

All of the above options for engine malfunction have similar causes, which, depending on their neglect, can have different manifestations. For example, with a slight leak of air into the engine crankcase, its operation will not change much, the engine power will drop slightly, its maximum speed will increase, and it will be able to heat up a little more. At medium stages of air leakage, the engine will stop idling and will become very hot during operation. A strong air leak will make it impossible for the saw to operate; it will start and immediately stall.

In parallel with the visible manifestations of malfunctions, for example, the inoperability of the chainsaw after starting, processes will take place inside the engine at the time of its incorrect operation that irreversibly lead the saw to the most severe consequences, for example, melting of the piston, jamming of the crankshaft.

Chainsaw Champion Starts and Stalls Reason

Reasons why chainsaw and kiosks start

A chainsaw is no longer a luxury, but an important tool for those who have a summer residence or home property. But, like any other technique, this tool has the property of failure, despite its simple design.

The classification of main faults includes:

complete lack of engine installation
the engine starts and stops
unstable operation of the tool
stop working on boot
loss of power.

If the chain saw does not start at all, the reason may be:

Manufacturing defect
Lack of fuel
Problems starting the ignition system
No sparks from spark plugs
Low quality fuel mixture
Carburetor clogged
Problems with high voltage wire
No compression.

Why does the chainsaw start and stop, what should I do in this case? The reasons for this need to be examined in detail.

Content

Launch of chainsaw and kiosks: reason, video

The reason why a chain saw may die immediately after the factory is a malfunction of a certain piece of equipment.

The most common reason for a chainsaw
to break and stop. This is a low fuel level in the tank. This can be confirmed by stopping the tool when it is tilted while the fuel remains in a certain location in the fuel tank. If the fuel is of poor quality, there may also be problems with the operation of the chainsaw, in which case it must be completely replaced.
Breathing respite, which significantly reduces fuel consumption of the engine.
Insufficient contact of the wire cap with the spark plug, which leads to strong heating of the spark plug insulator. Deterioration of contact may occur due to mechanical shear or carbon deposits.
Faulty spark plugs.
A muffler plug that impairs the output of exhaust gases, causing the engine to stop. For this reason, the chainsaw may start and stop at idle. Deposits in the muffler can also occur due to poor quality fuel or improper operation of the tool.
Poor carburetor adjustment.
Piston group failure
Problems with the fuel filter or pump. In this case, gasoline may leak through the pump or have difficulty passing through the fuel filter to the carburetor. As a result, the chainsaw starts and nods with increasing speed.
Air filter dirty. Problems with this piece of equipment lead to the fact that when there is increased load on the engine, it simply cannot cope with it due to clogging and stalling. A similar result is obtained with increasing speed.
The chain is closed due to lack of or insufficient lubrication, as well as a problem with the chain brake.

READ How to Break in a Stihl Chainsaw

Chainsaw starts and stalls

Chainsaw

doesn't work,
stalls
. Don't nag, I'm tired of it. As much as you can about the secret, here it is.

The chainsaw stalls when you press the gas

pressing the gas.

The Partner 370
chainsaw to stall
at the slightest pressure on the handle.

Why does a chainsaw hurt and slow down?

If the equipment does not start properly "in the cold", the problem may be a lack of compression, i.e. the rings are worn out due to long service life. Sometimes the reason why the engine has trouble starting when cold is a problem with the muffler, as well as poor contact between the spark plug and the wire.

In addition, the cause of poor starting may be wear or damage to the gasket, the rubber seal in the carburetor accelerator pump, which causes additional air flow, which leads to an increase in the speed of the saw.

Problem solving

The equipment must be operated correctly, with components inspected periodically to prevent damage. To resolve this issue, all hardware components must be tested to ensure they are functioning properly.

If the chainsaw starts and stops, the cause may resolve itself. If it's a deficiency or an incorrectly mixed fuel mixture, you need to fix it. To prevent this, it is always necessary to drain the remaining fuel when the chainsaw is idle.

READ Makita UC3530A Chainsaw Review Our Best Electric Chainsaw

Periodic inspection of spark plugs is necessary. At the same time, it is necessary to remove the accumulation that is blocking the gap between the connections, and also check the ends for the presence of fuel. Another cause of spark plug failures can be spark plugs being soaked in gasoline. To do this, they need to be removed, wiped with rags and dried. Defective spark plugs are replaced.

If there is no spark between the spark plug and the high voltage wire, but if there is a good connection, replace the ignition module.

Muffler clogged. A common cause of breakdown is when the chainsaw starts and immediately quits. To fix the problem, you need to dismantle the muffler, clean it of sediment with sandpaper or a special chemical solution. If the chainsaw model is inseparable, the chemicals are poured into the system and remain there for several hours, then it is detonated.

The carburetor must be adjusted if the chainsaw stops idling. Fine tuning. This is a rather labor-intensive process, so this is usually done in service centers. But on some models there are elements for adjusting it; just turn the bolt half a turn to increase the speed of the chainsaw, the problem will be eliminated. If the jets, nozzles, channels and filters become clogged, the entire carburetor must be disassembled and cleaned. If seals, gaskets, or cuffs are worn out, they must be replaced to prevent air from being “sucked in.”

READ Chain Saw Or Reciprocating Saw Which Is Better

If there are problems with the fuel or air filter, you need to replace the fuel pump or clean the air filter.

If the septum is blocked, clean it with a normal needle.

When a chainsaw starts and stops immediately, the reason

may be a faulty circuit. To solve the problem, the oil in the chain oil reservoir is checked for oil, as well as the drain line for sticking or blockage.

When inspecting the piston group, you should pay attention to the cylinder and, if necessary, replace it or the piston. You can fix the cylinder with the dimensions of the new piston. If the piston and cylinder are normal, pay attention to defects in the piston rings and the need to replace them.

In addition, it is necessary to monitor the service life of the parts specified in the product data sheet, including the drive sprocket, tire, chain, part of the anti-vibration system, and replace them in a timely manner.

When using a long blank tool, it is worth checking the condition of the fuel line. If the tube is cracked, you need to replace it with a new one.

Malfunctions leading to improper operation of the chainsaw

There are a number of malfunctions that must be taken into account when diagnosing, since they can lead to interruptions in the operation of the saw.

Wear of crankshaft bearings. If the crankshaft bearings are worn out, runout will inevitably appear on the main shaft where the flywheel is attached. In such a situation, it is impossible to adjust the gap between the flywheel and the ignition coil, which leads to interruptions in spark formation and unstable operation of the chainsaw.
Impulse channel is dirty. The pulse channel serves to ensure the operation of the fuel pump; accordingly, its contamination will lead to improper operation of the pump, which will make it impossible for the saw to operate (it will start and immediately stall).
CPG wear. As a rule, with increased wear of the CPG, a decrease in compression in the chainsaw engine is observed, which will certainly affect its ability to develop speed.
Dirty fuel and air filters.

Summing up

When the first signs of improper operation of the chainsaw appear, it is worth carrying out a full diagnosis. To avoid damage to the saw as a result of improper maintenance, it is better to entrust the work of identifying and eliminating engine malfunctions to professionals. And most importantly, you should not use a chainsaw with minor defects, as this will lead to even bigger problems.

For what reasons does Shtil 180 stall at idle or full throttle?

Any tool can break and the Stihl MS 180 chainsaw is no exception. Now let’s try to understand questions such as: why does the chainsaw stall when the speed increases, also at full idle. Let's look at options for diagnosing and eliminating defects associated with this behavior of the Shtil 180 chainsaw.

IMPORTANT. An experienced electrician leaked to the network the secret of how to pay half for electricity, a legal way. Read more

Chainsaw Stihl Stalls Under Load

Reasons why a chainsaw starts and stalls

A chainsaw has long been not a luxury, but a necessary tool for those who have a summer cottage or a household. But, just like any other technique, this commonly heard instrument tends to fail, despite its simple design.

The systematization of the main defects contains:

complete lack of engine starting
the engine starts and stalls
unbalanced tool operation
stop work under load
loss of power.

If the chainsaw

It won’t start at all, the reason may be as follows:

Manufacturing defect
Lack of fuel
Tasks with launching a complex of accounting programs for ignition
No spark from spark plugs
Poor fuel mixture
Carburetor clogged
Problems with high-voltage wires
No compression.

Why does the chainsaw start and stall, what should I do here? You need to carefully consider the prerequisites for this goal.

Content

The chainsaw starts and stalls: reason, video

The reason that a chainsaw may stall immediately after the factory lies in the problems of a certain part of the equipment.

The most obvious reason why the chainsaw started and stalled may be a low level of fuel in the tank. Proof of this is when the tool stops working when tilted, when fuel residues accumulate in a certain place in the fuel tank. If the fuel is bad, problems with the service of the chainsaw may also arise; in this case, it is necessary to completely change it.
The breather is clogged, which significantly reduces fuel consumption to the engine.
Missing contact of the wire cap with the spark plug, which leads to strong heating of the spark plug insulator. Deterioration of contact may occur due to mechanical shear, also called carbon deposits.
Broken spark plugs.
The muffler is clogged, which aggravates the removal of exhaust gases, leading to the engine stopping. Therefore, the chainsaw
can start and
stall at idle. Sediment in the muffler can also appear due to poor fuel or improper use of the tool.
Poor carburetor adjustment.
Piston group failure
Problems with the fuel filter, also called the pump. In all this, gasoline may flow through the pump or flow poorly through the fuel filter to the carburetor. Ultimately, the chainsaw
starts and stalls as the speed increases.
Air filter dirty. Problems with this piece of equipment lead to the fact that, with excessive loads on the engine, it simply cannot cope with it due to blockage and stops. A similar result also comes out with increasing speed.
The chain is shorted due to the absence or insufficient amount of lubricant, additionally problems with the chain brake.

READ How to Cut Skirting Boards Using a Miter Box

Chainsaw stalls under load

The Stihl chainsaw stalls under load.

stalls

under
load
Free consultation is better via Skype ork.vitek or by phone. 380979677418 as much as I can.

Why does a chainsaw have trouble starting and stalling?

If the equipment does not start well “on cold”, you will like the problem better without compression, i.e. The rings are worn out due to their long service life and need to be replaced. Sometimes the reason that the engine does not start well when not heated is a problem with the muffler, and also poor contact between the spark plug and the wire.

Also, the reasons for a disgusting start are wear or damage to the gasket or rubber cuff in the carburetor accelerator pump, which causes an additional air flow, leading to an increase in saw speed.

Troubleshooting

The equipment should be operated correctly, with repeated inspection of component parts to prevent damage. To eliminate the problems, our client needs to check the components of the equipment to ensure they are functioning.

If the chainsaw starts and stalls, the reason you will be more likely to have been eliminated by your staff. If it is a lack of or incorrectly prepared fuel mixture, this needs to be corrected. To prevent chainsaw downtime, you should always drain the remaining fuel.

READ What Gasoline to Use for a Chainsaw

The spark plugs should be checked repeatedly. In this case, you should remove carbon deposits that are clogging the connection gap, and in addition, inspect the tips for the presence of fuel. Another reason for problems with spark plugs is that they may become wet with gasoline. For this purpose, they must be removed, wiped with a rag and left to dry. Defective spark plugs are replaced.

The Stihl chainsaw stalls when pressed.

A clogged muffler is a common cause of breakdowns that require a chainsaw

starts and immediately stalls. To eliminate the malfunction, it is necessary to dismantle the muffler and clean it of carbon deposits using sandpaper or a special chemical solution. If the chainsaw model is non-separable, chemicals are poured into the system and hours are left there, then it is purged.

The carburetor needs to be adjusted if the chainsaw stalls at idle. Precise setup is a rather labor-intensive process, so it is usually done in service centers. Alas, on some models there are elements for this option; just turn the bolt half a turn to increase the speed of the chainsaw, the problems will be eliminated. If the jets, injectors, channels and filters are clogged, you need to disassemble and clean the entire carburetor. When oil seals, gaskets, and cuffs wear out, they need to be replaced to prevent air leaks.

READ Chainsaw Shtil Disassembly And Assembly

In case of problems with the fuel or air filter, you need to change the fuel pump or clean the air filter.

If the breather is clogged, you need to clean it with an ordinary needle.

When a chainsaw starts and immediately stalls, the reason may lie in the incorrect operation of the chain. To eliminate problems, check the presence of oil in the tank for lubricating the chain, and additionally check the oil drain pipe for ruptures, or, in other words, blockages.

When inspecting the piston group, pay attention to the cylinder; if necessary, change it, or the piston. The cylinder is bored to fit the dimensions of the new piston. If the piston and cylinder are normal, pay attention to the shortcomings of the piston rings and the need to replace them.

In addition, you should keep under control the service life of parts indicated in the product passport, which include the drive sprocket, tire, chain, part of the anti-vibration accounting system, and it is time to replace them.

If you use the tool for a long time, it is worth checking the condition of the fuel line. If the tube is cracked, you will have to replace it with a new one.

Source

Why does a chainsaw stall when you press the gas?

Let's say the chainsaw operates normally at idle, but when you press the gas sharply it stalls. What is the possible reason? It’s immediately clear that the problem 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 many defects in the fuel accounting system to determine a clear reason why the chainsaw is calm

180 stalls when you press the gas, you need to carry out a full diagnosis of it. We advise you to read about the most common malfunctions of the Shtil 180 chainsaw and the elimination of these defects.

Why does the chainsaw immediately stall and choke when you press the gas?

Chainsaws are fairly reliable and simple designs. Therefore, if you properly care for them and handle them based on the manufacturer’s recommendations, then they fail very rarely and various types of breakdowns are quickly eliminated. But if you are faced with this situation and want to repair your instrument yourself, without resorting to the help of professionals, then delve into the information presented below.

In fact, it is impossible to unambiguously and accurately determine the reason why the tool does not start or stalls when you press the gas, since there are quite a lot of factors influencing this. But do not forget that starting from the fact that the chainsaw is equipped with a simple two-stroke engine, such conditions as lubrication, fuel, spark and air are important for its effective performance.

Chainsaw fuel tank

Consequently, the carburetor directly prepares the fuel-air mixture, the filter cleans the air from dust, the ignition unit and spark plug create a spark, and the gasoline contains lubricant.

That is why it is necessary to search for the causes of this kind of breakdown in a sequential order, starting directly from the simple ones and gradually moving to the complex ones. And this is an important factor in proper repair, since the person who, without thinking, begins to disassemble the carburetor, puts it at risk. Since this kind of unit must be repaired or adjusted directly in special workshops (read about carburetor adjustment).

Wrong fuel

An important fact is that for trouble-free operation of the tool it is necessary to pay close attention to the fuel itself . Since if this kind of mixture is not prepared correctly, then most chainsaws simply will not start. Consequently, not every owner will think to look for the cause of the breakdown in the fuel. That is why, in order for your tool to always work correctly, you need to use only high-quality gasoline for the mixture.

And also use only the oil that is made by the manufacturer of your tool. In addition, it is important to prepare this kind of mixture in the amount that you will definitely use in one or two weeks, but no more (see the proportion of gasoline and chainsaw oil).

Because otherwise, overexposure of the mixture directly in the canister will lead to it losing all its octane properties and this will lead to significant problems with the instrument.

Filling the mixture when the mechanism is running

The cause of a breakdown can also be the direct pouring of the mixture into the spark plug at the moment when the mechanism is started . In order to solve this problem, you need to turn out and dry the candle, but remember that it should not be heated under any circumstances. Excess fuel must be drained through the hole (spark plug), wait 20-30 minutes, then put it back in place and try to start the tool again.

There is no spark and the chainsaw does not gain momentum

The chainsaw stalls when you press the gas because there is no spark . This can happen when there is no good contact between the tip of the spark plug and the wire (high voltage). However, if this kind of connection works correctly, but there is still no spark, then the ignition unit (electronic) is the cause. It is important to note that these types of spare parts cannot be repaired, so they can only be replaced.

Inspection of the spark plug

Do not forget that by examining the spark plug you can obtain significant information regarding the breakdown of the chainsaw. Since if its surface is dry, then the reason for this is the cylinder, into which fuel is not directly supplied. That is why you will have to check the entire range of its supply step by step. If the spark plug is covered in black soot, this means that the carburetor is not working properly, that is, it supplies either a lot of fuel or pours oil directly into gasoline.

There is not enough fuel to supply and operate the chainsaw at full power

If the chainsaw stalls when gas is added, this means that there is not enough fuel supplied for the chainsaw to fully operate . The reason for this may be either a clogged carburetor (its jet) or contamination of the filter itself (fuel). Remember that the first unit should be checked exclusively by professionals, but you can clean the second one yourself.

Filter is dirty

In addition, the cause of breakdown can be the filter (air) if it is contaminated with dust . But do not forget that each model has its own easily eliminated and characteristic features. It is for this reason that do not hastily start disassembling and repairing the instrument, but it is best to “walk” through the forums, where there are a huge number of reviews from various owners, so as not to make things worse.

Since, for example, a Stihl chainsaw stalls when you press the gas for a simple reason, namely a simple clogging of the direct breather.

In order to solve this kind of problem, all you have to do is disconnect the (fuel) hose from the carburetor and pay attention to whether fuel is leaking out of it. Since if the mixture flows in a full stream, this means that the breather is not contaminated, but if on the contrary, then the cause of the breakdown has been found.

Muffler as the reason why the saw stalls under load

Here is another reason why a chainsaw stalls when you press the gas - muffler . It is this part that can interfere with the full operation of the tool in cases where it is directly contaminated with exhaust resinous deposits. To do this, you just simply need to clean it.

Cylinder-piston group

Quite often the partner chainsaw stalls when pressed and the reason for this is the cylinder-piston group . Since by examining them, namely the piston and cylinder, you can easily determine the cause of the tool malfunction by directly replacing them. You can also directly bore the cylinder itself relative to the dimensions of the new piston.

Chainsaw piston

But if after inspection you find that there is no damage on both the piston and the cylinder, then the reason may lie directly in the rings (piston). To do this kind of check, you need to insert a piston into the cylinder and carefully begin to rock it using a connecting rod. If you suddenly feel play, then the rings need to be replaced, as they are already worn out.

Insufficient chain lubrication prevents starting and the saw does not develop speed

Many people wonder: why does the chainsaw stall when I press the gas? The answer may also lie in insufficient chain lubrication (see chain saw oil), since the oil line may be leaking, or the direct channels may simply be clogged. That is why pay attention to the chain, because if it is dry, then without delay, start cleaning the channels that supply oil directly to the tool tire. Then inspect in detail the parts where the oil pump fittings are connected to the pipes. But if you notice that oil is leaking at the joints, or you find cracks in the tubes themselves, then in the first case, seal the leaks with sealant, and the tubes will have to be replaced.

Filter check

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

Sometimes, a filter clogged with dirt is unable to pass through the fuel mixture in sufficient quantities. Accordingly, a lack of fuel appears 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 under the influence 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 high speeds, but this is with minor contamination.

KEY-DOP

Why does a chainsaw stall when the accelerator is pressed - to summarize

When making an update on the reasons why the saw stalls after you press the gas, you need to take stock of the various circumstances and their elimination. Prerequisites can be roughly divided into two parts - ordinary and complex. It is necessary to start troubleshooting with ordinary circumstances and end with more complex ones.

It is absolutely necessary to start checking from the tank, not from the carburetor, but specifically from the gas tank. At the same time, make sure that you are using the correct mixture. Next, you need to check the serviceability of the muffler and the presence of carbon deposits on the spark plug. After which you will already have an idea of in which part of the tool it is necessary to find a breakdown. There may be a breakdown in that. That you just need to turn up the highest speed, why do you need to adjust the carburetor. If this does not help solve the problem, then you should check the air filter and clean it.

Pay special attention to the carburetor, after cleaning and maybe repairing which the chainsaw should work like new. If even after this the problem remains, then do not be lazy to check the compression value. Maybe the engine is very worn out and needs to be replaced.

At this point, the update to restore the functionality of the tool is completed, and it is necessary to note another such moment, such as the introduction of fuel, which is stored for a long time. Many people dilute gasoline with oil and store the mixture for months, and sometimes for six months. This cannot be done in any way, because the mixture has the characteristics of aging, and therefore, after its preparation, it must be used within 1-2 weeks. If you do not follow this recommendation, it will often be necessary to change not only the fuel filters, but also clean the carburetor, but the worst thing is that this will contribute to accelerated wear of the CPG.

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, a lack of fuel appears 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 STIHL chainsaw stalls. Also, if the fuel filter is clogged, there may be a noticeable drop in the power of the chainsaw at high speeds, but this is with minor contamination.

The STIHL 180 chainsaw starts and stalls.

reduced filter capacity (gasoline and air);
abnormal operation of the ignition system:
the carburetor settings changed spontaneously;
malfunction of fuel line elements;
exhaust channels and muffler are clogged;
defects of the piston, cylinder, valves.

Repairs should begin with an external inspection and checking the presence of fuel in the tank.

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 STIHL 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 STIHL 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.

The STIHL 180 chainsaw stalls at idle.

Similar problems can arise when the air filter is clogged with dust, sawdust, or dirt. If there is insufficient air, the fuel mixture will be enriched and the fuel combustion process will be difficult.

To check, remove the filter. During operation, precautions must be taken to prevent dust from entering the carburetor. The device must be cleaned and rinsed in warm water with added detergent. After drying, if possible, blow with low-pressure compressed air and reinstall. If the chainsaw works normally, then the cause has been eliminated; if not, you need to look further.

READ Chainsaw Caliber BP 2600 18u Carburetor Adjustment

If the tool is used continuously, it is recommended to replace the filters of the fuel and air systems after 3 months.

If 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 this yourself, but you need to have certain skills. If you are not very familiar with push-pull saws, it is better to turn to specialists, since this technique is quite capricious and any mistakes are expensive.

Air filter

On the Internet pages, you can easily find information that the Shtil

The 180 may
stall
due to severe contamination of the air filter.
I would like to refute this incorrect information and say that the Shtil MC 180 carburetor is equipped with a compensator, which is designed and installed to take in the air necessary for the normal operation of the Shtil
180 chainsaw, bypassing the dirty air filter. This power with a clogged air filter will not drop much, alas, it will definitely not stall. The power may also drop due to piston wear; here the Stihl MS 180 piston chainsaw will need to be repaired.

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, but at the end it was installed for a long time and was not even used. After starting it, it works fine at idle, but when you press the gas it can stall. Why does it stall? The reason is a stuck carburetor valve nozzle. This is not 100%, but the possibility of such a malfunction is extremely high. We recommend reading the article about the design and repair of the Shtil 180 carburetor.

To check the injector, 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 yourself and disconnect the fuel supply hose.

The saw calm stalls at idle.

It is necessary to very carefully remove the fuel hose and prepare a plug for it in advance, since fuel must flow with its use.

Having removed the carburetor, it must be blown out and cleaned of dirt, only after which the carburetor must be untwisted.

You need to unscrew the cover of the main chamber of the carburetor, this is the one with a compensator installed on top. Next, use an 8 mm bolt and a length of more than 50 mm. We knock out the valve.

Checking filters and carburetor

A common cause of chainsaw breakdowns is faulty filters or carburetor.

Checking the fuel filter

If the fuel filter is clogged with dirt, it is not able to pass enough fuel through it. As a result, the chainsaw stalls if you press the gas. The fuel burns too quickly, and a new portion of it does not have time to enter the system. If the fuel filter is slightly clogged, a significant reduction in power is observed at maximum engine speed.

Chainsaw fuel filter

Air filter

Contamination of this element makes normal operation of the chainsaw impossible. But many models are equipped with a special compensator, which takes air in a different way. It allows you to do this even with a dirty filter, which has a positive effect on the operational capabilities of the unit.

Location of the air filter and spark plug of the chainsaw

In such cases, the power of the saw drops significantly, but it will not stall. Sometimes a decrease in this characteristic is observed when the piston is worn out.

Carburetor

The principle of operation of a chainsaw carburetor

A common cause of malfunctions of such a tool is carburetor failure. It is recommended to check this element if you have certain skills. It is better to give the device to a specialist who will perform high-quality diagnostics and adjustments using a tachometer.

This is especially true when the saw stalls at idle. It is recommended to check the operation of the muffler. It is because of the accumulation of exhaust gases that the saw stalls at idle and does not work normally. It often happens that the saw is not used for a long time. When they start using it again, they notice that when starting at idle, the unit works well, but when you press the gas, it stalls. The main reason for this negative phenomenon is a stuck injector valve.

To check for the presence of such a malfunction, it is necessary to remove and disassemble the carburetor. To do this, you need to unscrew the two nuts where the air filter was fastened. It is removed together with the engine control lever. The choke control rod must be disconnected from the carburetor.

Removing the carburetor cover

At the next stage, you need to pull this part towards you slightly, disconnecting the fuel supply hose. This must be done especially carefully, having previously prepared a special plug. It will be useful for closing the hose, since fuel will be released from it.

When you have managed to remove the carburetor, you need to clean it of dirt and blow on it. Only then can you try to unwind this part. It is necessary to remove the main cover and use a small bolt to carefully knock out the valve. It should only allow air to flow in one direction. If it goes on both sides, then this part needs to be replaced.

Carburetor disassembled

Repair STIHL MS 180 / disassembling and assembling carburetor / stalls at idle

Chainsaw Stihl

The MS 180 has certain aspects that make owners worry and is expensive.

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

If the nozzle is removed, of course, blow it out with a compressor. The valve must allow air to flow exclusively in one direction; if there is an option to freely blow the valve in both directions, it means it is faulty and needs to be replaced with a new one. When the valve is repaired, you must reassemble the chainsaw in the reverse order of disassembly.

Read also: What seals are placed on water meters

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

The next common reason why a saw may stall is

When the speed increases, air leaks into the carburetor. You can check this only with a special tool; alas, it is worth seeing that if preventative work on the carburetor has not been carried out for a long time, then you can install a new set of gaskets in the carburetor. Sometimes this helps solve the problem of its depressurization.