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My Chainsaw Will Not Stay Running: How to Fix This

One of the best tools to have at home is a chainsaw, as it helps with wood harvesting and cutting trees. If it stops functioning correctly you want to fix it quickly. Luckily, a lot of the issues can be solved without too much of a hassle.

My Chainsaw Will Not Stay Running: How to Fix This?

The most common problems why a chainsaw does not stay running are:

  • Spark Switch/Plugs
  • Bad Fuel
  • Blocked Carburetor
  • Your Engine is Flooded
  • The Recoil Starter
  • A Blocked Idle Port

If your chainsaw runs for a few minutes and stops working, it shows there is an underlying problem that must be fixed. You should understand the issues and know how to fix the chainsaw as it helps you save money and time, and still have the saw running. Start by looking at the basics such as fuel, spark plugs, and switches, and if making adjustments does not resolve the issue, examine other parts of your chainsaw.

Here, we shall discuss some of the problems that prevent a chainsaw from working and the best solutions as to why your chainsaw won’t stay running. This guide helps you to fix it without experiencing difficulties.

Common Causes of Chainsaw Issues

  • Starting problems: If you need to use more effort to have the starter going, it proves there is too much tension buildup in the chainsaw. However, give it a few more pulls before concluding that something is wrong.
  • Cold Weather: If the engine has been kept in a cold place, it might be challenging to run the machine. When that happens, pulling the choke will help to keep the device running.
  • Hitting The Throttle For A Long Time: You should only run the throttle once, to get the right speed. However, if, by any chance, you end up holding it for too long, then it will cause issues with the engine, thus preventing your machine from running continuously.

The Common Problems and How to Fix Them

● Spark Switch/Plugs

You need to see if the chainsaw’s plug ignites a spark since that helps to initiate combustion in the area that ignites air and fuel mixture. It is one of those parts that quickly erodes and should be the first place you pay attention to when the machine isn’t running per your expectations. If you want to see whether the plug has a spark, start by removing it then touch the metallic section on the engine with a wire. See if the electrodes produce sparks.


If there are no sparks, clean it using a steel brush to remove corrosion.  In case there is no change even after examining and cleaning this section, get a new spark plug. You can find Chainsaw Spark Plugs here.

● Bad Fuel

Another problem that could affect how your chainsaw works is if the fuel is contaminated. It should run in excellent condition for about eight weeks once you purchase it. After that, there will be volatile agents that evaporate hence leading to problems with the oil. The fuel filters also prevent debris and dirt from getting into your chainsaw chain oil. If the fuel filter is blocked, your engine will not get the right amount of fuel, making it hard to keep your chainsaw running.


Use premium gas or fuel in the correct mixture, so that there will be no interference with how your machine operates. If you suspect there is bad oil in the chainsaw, then replace it. As for a broken filter, inspect to determine if it can be unclogged or needs to be replaced. Replacing the fuel filter is inexpensive and ensures that the fuel filters are working as required. If you store your gas for a longer period you can use a fuel stabilizer. You can find a fuel stabilizer here.

● Blocked Carburetor

If you leave fuel in the fuel tank of your chainsaw for long, chances of it getting clogged are high. That is because the light elements in it will evaporate, leaving behind a sticky substance. That leads to a clogged system.


Always clean the carburetor using the right cleaner to eradicate the sticky substance. In case the cleaning process does not seem practical, then you should replace the whole carburetor. You can find Chainsaw Carburetors here.

● Your Engine is Flooded

Before you start your machine, you are expected to push the fuel pump. However, if you overdo it, the engine gets flooded, which affects your chainsaw’s operation. If you smell fuel or have moisture in the spark section after starting the chainsaw, it indicates a flooded engine.


Open the spark plug and drain the fuel. Also, disengage your choke then dry off the spark plug before fitting it back in place.

● The Recoil Starter

It compromises of the elements that help the engine to run. Any of those elements might have its complications, which could affect how your chainsaw runs. For instance, the rewind spring might fail to function correctly, making it hard for the starter rope to recoil onto its pulley.


Look for a replacement for the rewind springs or buy a new recoil starter assembly. Your choice is dependent on the extent of the problem. You can find replacement Chainsaw Recoil starters here.

● A Blocked Idle Port

If the idle port, gets damaged or blocked, it is hard to keep your chainsaw in an idle position. That stops you from completing the tasks you have.


Inspect the idle port to see its condition each time you start running your chainsaw. That is the only way to know if it is damaged or blocked. If you find it damaged, buy a new one early or invest in the right technician.

Methods how to Start Your Chainsaw

Many complications with the chainsaw occur because people do not know the correct way of starting their device. That mainly happens to most of the beginners who recently purchased this power tool for the first time. If you consistently start your chainsaw the wrong way, you will soon have to deal with some of the complications discussed above. So how do you best run your chainsaw?

● Place It on the Ground

Before you consider operating your chainsaw, make sure it is on the ground. Remove its cover if you have not done so.

● Run the Brake Chain

Make sure that the chain brake is active. That is done by pushing the chain brake forward to ensure the chain does not rotate on the chainsaw bar.

● Decompress

All the new models of chainsaw brands have a smart start decompression button. Ensure it is engaged as it helps to start your chainsaw.

● The Fuel Pump

Press the fuel pump for a couple of minutes until you see the fuel. It makes it easy to start your machine and keep it operational.

● Starter Rope

If the chainsaw is on a flat surface, put your right foot on the handle while your left-hand holds the top of your chainsaw. Pull the starter slowly and smoothly.

● The Throttle

With the throttle halfway, pull the chainsaw’s rope until it starts running. You can accelerate the engine to keep the machine going. Once the chainsaw starts running, touch the throttle button to keep it in its normal state.

● Safety Precautions

You should be careful when following these troubleshooting procedures. Hold the chainsaw firmly just in case it starts while you are still troubleshooting the issues. The most critical safety procedure is removing the spark plug and the batteries when checking your machine. That ensures your engine does not start unexpectedly as it would cause problems. Also, remember to have the safety gloves and glasses to protect yourself.


The one way of making sure that your chainsaw serves you long is if it is well-maintained. You should learn some of the maintenance guides that can help you keep your chainsaw in excellent condition:

  • Loose nuts: Adjust the loose nuts so that the chainsaw works as required.
  • Sharpen the blade: See how sharp the chain blade is. Paying attention to how the blades have been operating will help you to know if the tool needs sharpening.
  • Lubrication: Ensure that the moving parts stay lubricated. Keeping this gadget oiled helps to prevent the friction between the chain and the guide bar. It is also an ideal way to prevent the chainsaw from overheating.
  • Cleaning: Clean the chainsaw often to make sure there is no dust or debris. The carburetor should also be cleaned regularly to avoid dirt from building up as it affects how the chainsaw runs.
  • Use good gas: Use new gas every time, especially if you do not use the equipment regularly. If the gas is stored in the chainsaw for too long, it forms residue, making it hard to have your machine running continuously. You can use a fuel stabilizer to store your fuel for a longer period. You can find Fuel Stabilizer here.


If you are determined, there is no chainsaw problem that cannot be fixed. Since a chainsaw is one of those handy tools that you may have in your home, you must ensure it runs effectively. Have it well-maintained so that it runs effectively. You also have to create a schedule of when and how to maintain this power tool. It is the simple things such as lubricating, cleaning the air filters, having fresh gas, and sharpening the chainsaw, that keeps it in excellent condition for a long time. Also, remember that when fixing your chainsaw, wearing protective gear is a must to avoid accidents. If, after following the steps above, your saw does not stay running, search for an expert.