When working with a chainsaw, it can be frustrating when the chain suddenly stops while cutting. This not only disrupts your work but can also be dangerous if you are not careful.

There are several potential causes for this issue, and in this article, we will discuss some troubleshooting steps to help you address the problem.

Why does my chainsaw stop when cutting?

There are a few possible reasons why your chainsaw chain may stop while cutting:

  • Dull or damaged chain
  • Clogged bar and sprocket area
  • Improper tension on the chain
  • Faulty engine or carburetor

It’s important to identify the root cause of the problem in order to fix it effectively. Let’s look at some steps you can take to troubleshoot and fix each of these potential issues.

How To Fix Chainsaw Chain Stops When Cutting?

Dull or Damaged Chain

A dull or damaged chain is one of the most common causes for a chainsaw chain to stop while cutting.

A sharp chain is essential for efficient and safe cutting, as it allows the saw to easily cut through wood without putting excess strain on the engine.

If your chain is dull or damaged, it can get stuck in the wood and cause the chain to stop.

To check if your chain is dull, run your finger lightly along the top edge of the cutting teeth.

Be careful not to push down too hard as the teeth are sharp. If you feel any roughness or nicks, it’s time to sharpen your chain.

How to sharpen your chainsaw chain

  1. Start by securing the chainsaw in a vice or using a sawhorse to hold it steady.
  2. Use a round file of the appropriate size for your chainsaw chain and follow the angle guide on the top plate of each tooth to sharpen it.
  3. Rotate the chain slightly after every few teeth until they are all sharp.
  4. Use a flat file to sharpen the depth gauges, also known as rakers, to ensure they are at the same height as the cutting teeth.
  5. Once your chain is fully sharpened, use a chainsaw lubricant to oil the chain and prevent it from rusting.

After sharpening your chain, test it out by making some test cuts on a piece of wood. If the chain no longer stops while cutting, then you have resolved the issue. If not, move on to the next troubleshooting step.

Clogged Bar and Sprocket Area

Another common cause for a chainsaw chain to stop is if the bar and sprocket area are clogged with sawdust, dirt, or debris.

This can prevent the chain from moving smoothly along the bar and cause it to stop while cutting.

To clean the bar and sprocket area, follow these steps:

  1. Turn off the chainsaw and allow it to cool down if it has been in use.
  2. Use a brush or compressed air to remove any debris from the bar and sprocket area.
  3. Inspect the grooves on the bar for any buildup and use a flat file to scrape it away.
  4. Re-oil the bar and sprocket area with chainsaw lubricant to prevent future buildup.

After cleaning, test the chainsaw again to see if the chain stops while cutting has been resolved.

Ensure proper fuel and oil levels

It’s important to make sure your chainsaw has the proper fuel and oil levels to operate correctly. Lack of fuel or oil can cause the engine to malfunction, resulting in the chain stopping while cutting.

Check that your chainsaw has enough bar and chain oil before each use, as this lubricates the chain during operation. Also, ensure there is enough fuel in the tank to keep the engine running.

Improper Tension on the Chain

If your chainsaw chain is too loose or too tight, it can cause issues with cutting and result in the chain stopping. It’s important to ensure that your chainsaw chain has the correct tension before using it.

To adjust the tension:

  1. Loosen the bar nuts on the side of the chainsaw.
  2. Use a screwdriver to turn the tensioning screw until the chain is snug against the bottom of the bar but can still be pulled easily by hand.
  3. Tighten the bar nuts back up, making sure not to over-tighten them.
  4. Test the chainsaw again to see if the chain stops while cutting has been resolved.

Check for safety features

Some chainsaws are equipped with safety features that can cause the chain to stop if engaged.

These features may include a front hand guard or a chain brake, which are designed to protect the user in case of kickback or other potential dangers.

Make sure to read your chainsaw’s manual and understand how these safety features work.

Check the engine

If the previous steps did not resolve the issue, it’s possible that there is a problem with the engine or carburetor.

A faulty engine can cause the chain to stop while cutting, so it’s important to check for any potential issues.

Here are some things to look out for:

  • Check the spark plug: If it is dirty or damaged, clean or replace it.
  • Clean the air filter: If it is clogged with debris, clean or replace it.
  • Check the carburetor: A clogged or faulty carburetor can cause issues with the engine. Consider taking your chainsaw to a professional for inspection and repair if you suspect this is the issue.

Conclusion:

There are several potential causes for a chainsaw chain to stop while cutting. By following these troubleshooting steps, you can identify and fix the issue, ensuring safe and efficient operation of your chainsaw.

Remember to always prioritize safety when working with power tools and regularly maintain your chainsaw to prevent future issues. Happy cutting!

Oberon
Oberon
With over 20 years of hands-on experience in the construction industry, I've had the privilege of working with some of the most innovative tools and technologies that have shaped modern construction. My journey has taken me through roles at leading tools companies such as Bosch, DeWalt, and Makita, where I've contributed to various groundbreaking projects. At Toolzed, I aim to share my passion for construction tools, from chainsaws to drills, providing insights and expertise to help professionals and enthusiasts alike make informed decisions.