Why My Chainsaw Won’t Stay Running? * 7 Solutions ✔️2022

Chainsaw won’t stay running If you think you are not alone. There are plenty of ways to troubleshoot your chainsaw without spending a fortune. These tips include checking the spark plug, fuel supply, and carburetor. But first, let’s look at why your chainsaw has been struggling to start. Listed below are several possible causes of your chainsaw’s lack of spark.

Here are the basic issues and troubleshooting steps:

There might not be enough Gas – If you haven’t used it for quite some time, the gas may have evaporated. Make sure the gas tank is at least half full.

The gas might be old – If unused for a long time, the volatile components of the gas will evaporate and it will not ignite. If you are not sure about the age of the fuel, empty the gas tank and refill it with new gas. Fuel is only good for 8 weeks from the day you purchased it.

Why My Chainsaw Won't Stay Running? * 7 Solutions ✔️2022 How To Do?

Chainsaw Won’t Stay Running

Fuel Line and Fuel Filter might be blocked or damaged – If the Fuel Line and Fuel Filter are damaged, split, or blocked, the chainsaw will not get enough fuel. Dip the filter in gas and see if it will freely run through the other side. If it doesn’t, replace it.

Diaphragm might be sticky from old gas – The diaphragm goes bad over time. If you find that it’s sticky, buy a rebuild kit or replace it.

Spark Plug might be old – If the spark plugs are dirty or corroded, clean them with a steel brush or replace them altogether.

Idle ports may be plugged or blocked – These are the small ports in the carburetor where the fuel passes through when idle. Give it a good cleaning to remove any clogging or blockage.

Clogged Air Filter – Put the air filter up against bright light and check if there are dark areas deep in the filter. Clean the filter or buy a new one.

Vent in the Fuel Cap is plugged – If the vents in the fuel caps are clogged the fuel becomes vacuum locked. Check the cap and clean it or replace it.

High-Low adjustments screws may need calibrating – If you have these screws in your chainsaw, adjust them by turning both screws clockwise until you reach the end – gently. Do not force or damage! Bring the saw to full throttle. Starting with the High Speed screw, turn it up to counter clockwise until the chainsaw starts sounding rough and bucking. You can determine this from the vibration.

Remember the position. Turn the screw clockwise until the chainsaw misbehaves again. Adjust the screw halfway between these two positions. For the Low Speed screw, repeat the procedure in idle.

Why My Chainsaw Won't Stay Running? * 7 Solutions ✔️2022 How To Do?

chainsaw won t stay running

Does the chainsaw keep stalling? If you’ve checked all the possible problems and corrected them and your chainsaw still won’t stay running – it might be time to bring it to the service center for a carburetor check-up.

Checking the fuel supply

If your chainsaw won’t start, the most common cause of a failing chainsaw is a failed spark plug. Replace the spark plug to ensure that your saw is getting fuel. To test the spark plug, pull the starter cable, and see if it produces a blue spark. If it does, the problem is likely with the spark plug.

In most cases, a simple replacement of the spark plug can fix the problem. The next most common cause of a chainsaw not starting is a problem with the fuel system. You may be interested, How to Repair Chainsaws Rust

Another common cause of a chainsaw not starting is a dirty fuel filter. Fuel filters should be clean and free of debris so that the gas can flow freely through the engine. Running the engine on a lean fuel setting can cause the gas to be vaporized, overheating the engine parts and damaging gaskets and pistons. In some cases, spark plugs will not fire when the engine runs too lean. Fuel tank vent holes can also be clogged, which can cause vapor locks.

Checking the carburetor

If your chainsaw doesn’t stay running, one of the first things you should do is to check the carburetor. It can be as simple as cleaning out the air filter and adding some fuel. It’s also worth checking the metering arm, which should be in the proper position. Checking the carburetor’s idle screw can also help. If it’s too low, it could be because the cylinder fins have become clogged and need to be refilled.

Next, you should check the spark plug. If you find that it’s still clogged, you should replace it with a new one. You can also use a carburetor cleaner to clean it. However, be sure to use a carburetor cleaner and follow the manufacturer’s instructions to ensure the carburetor’s performance is as good as new.

Checking the fuel supply

If your chainsaw won’t start, the most common cause of a failing chainsaw is a failed spark plug. Replace the spark plug to ensure that your saw is getting fuel. To test the spark plug, pull the starter cable and see if it produces a blue spark. If it does, the problem is likely with the spark plug. In most cases, a simple replacement of the spark plug can fix the problem. The next most common cause of a chainsaw not starting is a problem with the fuel system.

Why My Chainsaw Won't Stay Running? * 7 Solutions ✔️2022 How To Do?

Chainsaw Won’t Stay Running

Another common cause of a chainsaw not starting is a dirty fuel filter. Fuel filters should be clean and free of debris so that the gas can flow freely through the engine. Running the engine on a lean fuel setting can cause the gas to be vaporized, overheating the engine parts and damaging gaskets and pistons. In some cases, spark plugs will not fire when the engine runs too lean. Fuel tank vent holes can also be clogged, which can cause vapor locks.

Checking the spark arrester / Chainsaw Won’t Stay Running

If your chainsaw won’t stay running after a few minutes of use, it may be time to check the spark arrester. A spark arrestor prevents the engine from emitting sparks, which can damage your chainsaw. Over time, this part can accumulate soot and may need to be cleaned or replaced. To fix the spark arrester, remove the plastic muffler cover and find the spark arrester.

Why My Chainsaw Won't Stay Running? * 7 Solutions ✔️2022 How To Do?

Chainsaw Won’t Stay Running

Another step to check the spark arrester is to check the ignition coil. If the spark plug doesn’t produce a spark, try pulling the starter cable and checking the spark plug. Look for a blue spark with two nodes at the end. If you find that the spark is faulty, replace the ignition coil. The next common problem area is the fuel system. If the spark arrester is functioning properly, you should be able to use your chainsaw without a problem.

If what we wrote in the Chainsaw Won’t Stay Running article still does not resolve, we recommend that you bring it to service control.

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FAQ

The reason why the echo chainsaw is not working Gas may be old.

The reason why the Husqvarna 440 chainsaw will not start may be a clogged air filter or a clogged fuel filter.

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