Despite the high performance of chainsaws, sometimes there are times when the tool stops working normally. In particular, a common situation is the fact that the chainsaw begins to stall when you press the gas. For experienced owners of tools, this problem is known, but for beginners who have encountered this for the first time, they will have to turn to specialists for help. But do not rush, in the material you can find all the important causes of the malfunction, as well as try to eliminate them.
Checking the main chainsaw systems
If the chainsaw stalls after pressing the accelerator, it means that there is a breakdown of some element. It is very difficult to determine the cause of such a malfunction right away, as various factors can contribute to this. The search for the cause should begin with verification activities of the main systems of the instrument, starting from the smallest to the largest.
The first step is to check for fuel in the tank. Often masters are so keen on sawing that they forget to add fuel to the tank. Even if there is a certain amount of fuel in the tank, and the chainsaw starts up and immediately stalls, then this may be due to the lack of mixture as a result of clogging of the fuel channels.
If everything is in order with the fuel, then the cause must be sought in the spark plug. It should be unscrewed and inspected contacts. If there are no signs of dampness and soot, then you need to check the size of the gap, which should be 0.5 mm, and after the presence of a spark. If the candle has not been replaced for a long time, then you need to change it, and then restart the tool.
It is also necessary to check the muffler, since its clogging can impede the exhaust gas, which affects the functioning of the internal combustion engine. The silencer is subject to dismantling and wet cleaning of soot. If the above steps do not help to fix the problem, then you will need to delve into the situation in more detail, since the cause may be a malfunction of the carburetor or the need to configure it.
Causes and features for troubleshooting
Why the chainsaw stalls after start-up or during operation can be found out only after checking. As a result of the check, you can not only detect the causes of malfunctioning of the motor, but also possible breakdowns. In order to find the exact cause, you need to know in what cases a malfunction is observed. Consider such cases, and also find out the features of troubleshooting.
Stalls when you press the gas
If the engine stalls when gas is added, the following factors may be the reason for this:
- clogged or incorrect carburetor setting;
- air filter contamination, whereby the motor does not have enough air to gain speed;
- clogging of the fuel filter, which contributes to the intake of an insufficient amount of the fuel mixture;
- malfunction of the cylinder-piston group. If the amount of oil in the fuel mixture is insufficient, excessive piston friction against the cylinder wall occurs, which entails overheating and scoring.
In case of overheating with a lack of oil in the fuel mixture, it will be necessary to carry out a major overhaul of the engine, which is one of the most unpleasant consequences. In order to properly adjust or clean the carburetor, you should give it to a specialist, since the lack of experience with small parts can lead to damage to the mechanism. Checking the air and fuel filter can be done by yourself.
It’s important to know! The fuel filter must be replaced every 3 months with daily use of the tool.
If the chainsaw does not allow you to develop speed when you press the gas, then it is advisable to try to replace the fuel mixture in the tank, especially if it has been in the tool for a long time.
Stalls on load
If the chainsaw begins to stall under load, the reason for this is, first of all, the incorrect carburetor setting. If this reason is eliminated, then in addition to problems with the carburetor, the cause of tool inoperability under load can be damage and wear of the crankshaft oil seals or carburetor gaskets through which air is sucked into the system.
It’s important to know! Diagnosis of such a malfunction is best done at a service center, where the exact cause will be established.
It is recommended to start troubleshooting by checking the gaskets and gaskets, and only after that check the carburetor settings. Another reason why the chainsaw starts and immediately stalls under load can be grinding of special hoses, through which the impulse is transmitted from the crankcase to the fuel pump. But such hoses are not installed on all models of chainsaws, but only mainly on professional ones. To eliminate the malfunction, it is recommended to replace this hose. How to do it right is discussed in the video:
Stalls idling
If the chainsaw starts up poorly and stalls at idle, the first cause is a clogged muffler. The muffler should be removed and then wet cleaned. This is very important, since with dry cleaning dust can enter the lungs, which will lead to serious respiratory failure.
The second reason that the chainsaw stalls at idle is the incorrect carb setting. For the chainsaw to idle, tighten the screw called L on the carburetor. If the tool stalls at idle, the screw should be turned 0.5 turns clockwise. To precisely adjust the carburetor, it is recommended to use a tachometer, and the tuning technology is described in this article (link).
Stalls when tilted
The reason that the chainsaw starts to stall when tilted is the lack of fuel in the system. The fuel pipe is located directly at the bottom of the gas tank, so tilting the tool causes the pipe to simply begin to be located above the fuel mixture. Actually, therefore, when the tool is working, it can stall sharply.
Stalls at high speeds
When the chainsaw begins to stall at high speeds, the following details are subject to inspection:
- air filter;
- fuel pump;
- fuel filter.
The air filter must be cleaned, for which it is enough to wash and dry it (paper-only change). You can check the clogging of the fuel filter by disconnecting the fuel hose from the carburetor. If the trickle of gasoline from the hose flows well, then the fuel filter can not be checked or replaced. If the trickle is weak or there are no signs of fuel supply then replace the filter and clean the breather with a regular needle.
Checking the gas pump is checked for the characteristic signs of fuel leaking through it. If there are no signs of leakage, then everything is in order, so it remains to check the carburetor. Depending on the power of the saw, maximum revolutions are set, which can be checked using an electronic tachometer.
As can be seen from the description, there are a lot of reasons why the chainsaw starts and stalls. Most often, this occurs due to improper carburetor adjustment, although on branded chainsaws, such as Stihl, Husquarna, carburetor adjustment is a rare event if you pour a high-quality fuel mixture. If malfunctions and malfunctions occur in the operation of the tool, it is recommended to carry out its diagnostics and repair, and only after the elimination of the malfunction continue to use. Not infrequently, minor symptoms of malfunctions become serious problems for tool owners.
There are frequent cases when owners of chainsaws encounter their breakdown and it does not matter what model of this kind of equipment, since the nature of breakdowns is almost the same for everyone. Well, here’s the chainsaw stalled and what’s next? Undoubtedly, you can attribute the equipment to specialized services that will repair your “iron friend” for a fee. But as they say: why pay more?
After all, you can personally disassemble the tool and repair it, since the breakdown can be insignificant, and in the service you will pay a lot. But naturally, in order to bring the instrument back to life, you need to be able to understand the causes of its breakdown and troubleshooting methods. So let’s learn! In this article you can find answers to questions regarding situations when the tool simply stalls after directly pressing the gas. So let’s get started.
The main elements of chainsaws
Before you begin to delve into issues of breakdowns and repair of the tool, let’s first figure out what the chainsaw itself consists of. First of all, I would like to note that this tool belongs to the category of technology, the operation of which directly depends on the internal combustion engine.
It is also important that chainsaws are equipped with a single cylinder engine, and whose work is carried out on such kind of fuel as gasoline. It is worth noting that, despite the similarity with other tools, it does not have a gearbox. And it is replaced by a kind of single-stage chain transmission, through which the chain itself (saw) is moved.
In fact, a chainsaw is a fairly simple design, but this does not prevent it from being reliable, practical and able to fully provide direct uninterrupted and cyclical operation even in fairly difficult conditions. This tool consists of a huge range of certain “vital” elements for its correct and productive work. This is a carburetor, a direct chain tensioner, a tire equipped with a chain and other elements.
Before buying a chainsaw, be sure to study all the options, and choose the brand of chainsaw that suits you.
To simplify your choice, we have compiled a chainsaw rating for you in terms of reliability.
If you have a limited budget, then read the article about Russian manufacturers of chainsaws.
Why does the chainsaw immediately stall and choke when you press the gas
Chainsaws are quite reliable and uncomplicated designs. Therefore, if you properly care for them and handle them based on the recommendations of the manufacturer, then they fail well, very rarely, various kinds of breakdowns are quickly eliminated. But if you are faced with this situation and want to repair your tool yourself without resorting to the help of professionals, then delve into the information below.
As a matter of fact, it is impossible to determine unambiguously and precisely the reason why the tool does not start or stalls when you press the gas, as there are 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, conditions such as lubrication, fuel, spark and air are important for its effective performance.
Video: Husqvarna 236 Stalls When Pressed On Gas
Consequently, the carburetor is directly involved in the preparation of the fuel-air mixture, the filter purifies the air from dust, the ignition unit and the spark plug create a spark, and gasoline contains grease.
That is why it is necessary to search for the causes of this type of breakdown in a sequential order, starting directly from simple and gradually moving to complex. And this is an important factor in proper repair, as the person who, without thinking, begins to parse the carburetor, puts her at risk. Since this kind the unit must be repaired or adjusted directly in special workshops (read about carb adjustment).
Wrong fuel
Important is the fact that for trouble-free operation of the tool, it is necessary to be quite careful about fuel directly. Since if this kind of mixture is not prepared correctly, then most chainsaws simply will not start. Therefore, not every owner will guess the reason for the breakdown in the fuel. That is why in order for your tool to always work correctly, you need to use exclusively 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 accurately use in one or two weeks, but no more (see the proportion of gasoline and chainsaw oil).
Since in another case, overexposure of the mixture directly in the canister will lead to the fact that it will lose all its octane properties and this will lead to significant problems with the tool.
Blend when the mechanism is running
The cause of the breakdown can be immediate pouring a candle mixture at a time when the mechanism is running. In order to solve this problem, it is necessary to turn out and dry the candle, but remember that you can not calcine it in any case. Excess fuel must be drained through the hole (candle), wait 20-30 minutes, then install it in place and try to start the tool again.
There is no spark and the chainsaw is not gaining momentum
The chainsaw stalls when you press the gas due to the fact that no spark. This can happen when there is no good contact between the tip of the plug and the wire (high voltage). However, if this kind of connection works correctly, but there is still no spark, the whole cause is the ignition unit (electronic). It is important to note that this kind of spare parts cannot be repaired, so they can only be replaced.
Do not forget that by inspecting the candles you can get significant information regarding the breakdown of the chainsaw. Since if its surface is dry, the reason for this is the cylinder, which does not directly supply fuel. That is why you will have to step by step check the entire spectrum of its submission. If the candle is all in black soot, this means that the carburetor is not working properly, that is, it either supplies a lot of fuel or pours oil directly into gasoline.
Not enough fuel to feed and operate the chainsaw at full power
If the chainsaw stalls when gas is added, it means that the fuel is not supplied enough for the full operation of the chainsaw. This may be due to clogging of the carburetor (its nozzle), or contamination of the filter itself (fuel). Remember that the first node should be checked exclusively by professionals, but you can clean the second one yourself.
The filter is dirty
Since, for example, the 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 hose (fuel) from the carburetor and pay attention to whether fuel is leaking from it. Since if the mixture flows in a full stream, this means that the breather is not dirty, but if it is the other way around, then the cause of the breakdown was found.
Muffler, as the reason that the saw stalls when loaded
Here’s another reason why the chainsaw stalls when you press the gas. muffler. It is this detail that can interfere with the full-fledged operation of the tool in those cases when it is directly contaminated with exhaust resinous deposits. To do this, you just need to clean it.
Cylinder piston group
Quite often, the Partner chainsaw stalls when pressed and the reason for this is cylinder piston group. Since by inspecting them, namely the piston and cylinder, it is easy to determine the cause of a tool malfunction directly by replacing them. You can also make a direct bore of the cylinder itself relative to the size of the new piston.
But if after inspection you find that there is no damage to either the piston or the cylinder, in this case the cause may lie directly in the rings (piston). For this kind of check, it is necessary to insert a piston into the cylinder and gently begin to swing it by means of a connecting rod. If suddenly you feel a backlash then the rings need to be replaced, as they have already worn out.
Insufficient chain lubrication prevents start and saw does not develop speed
Many people ask the question: why does the chainsaw stall when I press the gas? The answer may also lie in insufficient chain lubrication (see oil for the chainsaw chain), as the oil pipe may leak or the direct channels may be clogged. That is why pay attention to the chain, because if it is dry, without delay, start cleaning the channels that supply oil directly to the tool bar. After that, examine in detail the parts where the oil pump fittings are connected to the pipes. But if you notice that the oil is leaking at the joints, or if there are cracks on the pipes themselves, then in the first case, seal the leakage points with sealant, and the pipes will have to be replaced.
Additional tips
First of all, what you should remember when acquiring this kind of tool is that certain parts of the saw must be replaced with new ones after their useful life has expired (passport). It is for this reason that the instruction should always be at your fingertips, since everything is described in detail there.
These details include: asterisk (leading), bus, part of the system (anti-vibration), as well as a chain. Since we should not forget that if this “stuffing” is not replaced with a new one at the right time, then these worn-out spare parts will negatively affect the rest of the chainsaw. For this reason, often enough do a check of the depth of the direct tooth extraction. Remember that it should not be higher than a week of 0.5 mm.
To summarize.
Definitely, every thing we have purchased has its own expiration date and sooner or later it breaks and how insulting it is when the degree of breakdown is so great that it cannot be repaired. But you must admit that quite often we simply neglect the technique (see about proper operation and how to cut down a tree correctly so that it falls in the right direction), and when it stops working, then we try to find ways to fix the breakdowns, turning to a huge number of services.
But remember that even though the equipment breaks, we can extend its “life”. All that is needed is to simply look after her, run in after replacing parts (see how chains are run in here) and keep her spare parts clean and tidy. And then, undoubtedly, it will serve for many more years. It is also important to use exclusively high-quality spare parts and “additives” (see nozzles for chainsaws). Then your equipment will run smoothly, and you simply forget what repair is.
We also recommend that you familiarize yourself with the Stihl ms 180 chainsaw.
There are several different reasons why a chainsaw does not start: the device may be malfunctioning, there may be a lack of sufficient fuel, and violations in its supply. Often a malfunction can be repaired by one’s own hands. In some cases, specialist assistance may be required.
Why the chainsaw doesn’t start
In the event of defects, it is necessary to check the serviceability of the components.
If a new chainsaw does not start, 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 stalling device built into the fuel cap may also be disrupted.
To cold
The reason why the device does not start up to cold is often a violation of the sequence of starting the engine.
You should read the instructions: manufacturers indicate how to properly launch a chainsaw.
To enrich the fuel, first close the choke. After this, fuel is sucked. For this, a special primer is used. Then turn on the ignition. Before the first flash of the engine, you need to make several movements of the starter. The damper opens, the device starts up. If the sequence is broken, any step is skipped, improper operation is possible.
If the chainsaw stops turning on, the likely cause is a problem with the fuel system. Start-up problems can occur due to improperly adjusted carburetor, clogged line and fuel filter. The quality of the fuel also matters. If the fuel is diluted with water, the device does not start up well or does not work at all. The mixture should be fresh.
A possible cause of a problem start is engine failure. Wear or breakage of a part leads to undesirable consequences: a decrease in compression in the cylinders and other troubles. It is recommended to contact specialists with such problems, since it is difficult to diagnose and fix the breakdown on their own.
Hot
If the chainsaw does not start up hot, you should start inspecting the tool with a spark plug. A spark test on a candle will also be required.
For the appliance to work properly, there must be a dry candle. When it is wet, sparks do not appear on the contacts. You can try replacing the part with a new one.
If there is a spark and the spark plug is working, try looking for a problem in the fuel system. If during a visual inspection it was not possible to find the cause of the breakdown, the carburetor should be removed. If the amount of fuel exceeds the permissible, the device will not work. The candle should be wet. Turn the candle hole down. If the fuel mixture is poured, the reason why the chainsaw does not start up hot will be an excess of fuel.
Why does the chainsaw stall
If the chainsaw starts and dies, the reasons may be different. An external inspection should be performed before attempting to repair the tool.
If the saw stalls during operation, check for a mixture of oil and gasoline in the tank. If the fuel mixture runs out, the device will not work. In situations where gas is still left, you should evaluate the quality of the tool until it is turned off. The occurrence of extraneous sounds and the subsequent abrupt stop should alert.
The formation of carbon deposits on the electrodes can also cause difficulties in the operation of the tool. You should carefully inspect the device, if necessary, clean.
When you press the gas
In cases where the chainsaw stalls when you press the gas, you should check the muffler and fuel filter. A possible cause of the problem is a leak in the fuel hoses. In some cases, adding revs helps.
Sometimes checking all the details does not give a result, the tool suffocates, chokes when gas is added. If the device stalls when a person presses the gas, it is possible to supply fuel in an amount insufficient for normal operation. This phenomenon occurs due to clogging of the carburetor or filter.
Damage can also occur due to dust clogging the air filter. When you give gas, the device stops working. Do not fix the problem yourself, since each model has individual characteristics.
Lack of lubrication on the chainsaw chain may cause a problem. If the circuit is dry, clean the channels through which oil is supplied to the instrument bus. If the oil leaks, there are cracks, defects on the pipes, you need to treat them with sealant.
Under load
In situations where the device stalls under load, the problem may be with the gas tank or filters. Check fuel quality and change filter.
Often the saw does not gain momentum due to the fact that the mixture poured into the gas tank has a low octane rating. There is not enough power, sufficient heating does not work, the chainsaw stalls under load.
Often malfunctions of components lead to the fact that the device stalls under load. Hoses, gaskets, gaskets should be checked for leakage. If the parts are defective, you can try to repair them or replace them.
Idling
In those situations when the chainsaw stalls at idle, it is necessary to inspect the condition of the muffler. If the part is dirty, the exhaust gases are poorly removed, the engine cannot continue to work, it stops.
The saw stalls at idle and in those cases when the carburetor is incorrectly configured. For newcomers, it is better to entrust the repair to specialists, since there is a possibility of incorrect settings, because of which the tool will not be able to work. To adjust the carburetor, a tachometer is required.
At high speeds
If the device stalls at high speeds, pay attention to the condition of the gasoline and air filters, and the serviceability of the fuel hoses.
A dirty air filter can be rinsed under warm running water. It is important to carefully dry the part before installing it so that water does not interfere with the health of the instrument.
If fluid stops flowing through the fuel hose, it is clogged. You can clean the part or replace with a new one.
In those cases when the saw stalls at high speeds, but the fluid fully flows through the hose, and the air filter is clean and serviceable, look for the cause of the breakdown in the fuel filter. Install a new one in its place or clean it.
In some cases, the problem lurks in the gas pump. When the component deteriorates, fuel begins to leak through the walls. If this phenomenon is noted, a new pump should be installed.
When tilted
If the saw does not develop revolutions when tilting, it turns off, stops working, you need to check the fuel level in the tank. If it is not too high, the device in an inclined position is not supplied with enough fuel, since the fuel pipe is above the level of the mixture.
What to do
If a malfunction is detected, you can try to fix it yourself. If you can’t repair the device yourself, contact a specialist. The master will inspect the device, make a professional repair. This will avoid the risks of harming the tool during attempts to repair it with your own hands. Ways to eliminate dysfunctions depend on which part turned out to be defective, which is why the saw’s work was disturbed.
If the chainsaw starts and immediately dies, often the reason is a lack of fuel. It is necessary to control the amount of fuel fluid in the gas tank, fill the device in a timely manner.
It is important to operate the tool correctly following the instructions. Improper use of the chainsaw can degrade the quality of the cut, lead to damage, damage to the device.
New technology can start up tight even with an easy-start system. After some time, this problem is resolved by itself. If a person has doubts about the health of the device, it is recommended to consult a master.