How to Fix: Chainsaw Won't Start After Sitting

Many chainsaw owners struggle with this frustrating issue, especially when their tool has been unused. We’ll cover some simple steps you can take to get your chainsaw up and running again in no time. Read on to learn how to fix the problem.

If you own a chainsaw, you know how frustrating it is when it won't start after sitting for a while. You're eager to work on that project or clear some branches in your yard, but the engine won't turn over. Various factors, such as stale fuel or clogged air filters can cause this common problem. In this blog post, we'll guide you through easy-to-follow steps to fix your chainsaw and get it running smoothly again. So grab your tools, and let's dive in!

Table Of Contents

Reasons Why the Chainsaw Won't Start After Sitting

If your chainsaw won't start after sitting, it's likely due to one of the following issues:

Flooded engine
Blocked or clogged spark arrestor
Faulty armature
Plug fault
Clogged carburetor
Bad gas
Dirty air filter

How to Fix the Flooded Engine?

If your chainsaw won't start after sitting, the most likely cause is a flooded engine. This is a common problem, especially with newer models of chainsaws. The good news is that it's easy to fix.

Remove the spark plug and check it for signs of damage or deposits. If it looks dirty, clean it with a wire brush or replace it.
Check the air filter and clean or replace it if necessary.
Remove the gas cap and pour out any old gas.
Start the chainsaw and let it run for a few minutes to burn off any remaining gasoline in the engine.

How to Fix the Blocked and Cogged Spark Arrestor?

The spark arrestor is a small screen that prevents debris from entering the engine. If it becomes clogged, it can prevent the engine from starting. If your chainsaw won't start after sitting, it's likely due to a blocked or clogged spark arrestor.

This is a common problem; fortunately, it's an easy fix. Remove the spark arrestor and clean it with a wire brush or other tool. You may also need to replace the spark arrestor if it's damaged beyond repair. Once you've cleaned or replaced the spark arrestor, your chainsaw should start up just fine.

Testing the Armature

The armature is responsible for generating the electrical current that ignites the fuel in the engine. The first thing you should do is test the armature. To do this, you'll need a multimeter.

Disconnect the spark plug wire from the spark plug.
Remove the flywheel cover and find the two small wires that go to the armature (usually red and black).
Touch one of the multimeter's probes to each wire and check for continuity between them. If there is no continuity, then the armature is likely faulty and must be replaced.

Check the Spark Plug

The spark plug ignites the fuel in the engine and allows it to run. It can prevent the chainsaw from starting if it's damaged or dirty. If the spark plug looks fouled or damaged, it must be replaced. To do this,

Remove the spark plug using a spark plug wrench.
Inspect the spark plug and look for any damage or debris on the electrode.
If the electrode is damaged, you must replace the entire spark plug.
If debris is on the electrode, clean it off with a wire brush or sandpaper.
Once the electrode is clean, reattach the spark plug and tighten it securely with the wrench.

How to Fix a How to Clogged Carburetor?

The carburetor regulates how much air and fuel are mixed before entering the engine cylinder. If it becomes clogged with dirt or debris, it can stop working. To fix it, you'll need to clean the carburetor.

This is a relatively simple process, but it does require some basic tools and knowledge. To clean the carburetor, you'll need: -A small screwdriver -A can of carburetor cleaner -Some rags or paper towels To fix the probLem:

Locate the carburetor on your chainsaw. It's typically located near the bottom of the saw, on the side opposite the blade. Once you've found it, use the screwdriver to remove the two screws holding the carburetor. Be careful not to lose these screws!
With the carburetor removed, take a look inside. You should see a small screen or filter. Use the carburetor cleaner and a rag to clean this screen. If it's really dirty, you may need to replace it. With the screen clean, reattach the carburetor and replace the screws.
Now try starting your chainsaw again. It should start right up! If not, there may be another issue at play. But if cleaning the carburetor doesn't fix your problem, consult a professional for further diagnosis and repair.

How to Fix Bad Gas Problem?

If your chainsaw doesn't start after sitting for a while, it may be due to bad gas. Gasoline can go bad after just a few months, so using fresh gas in your chainsaw is important. Drain the old gas from your chainsaw and fill it with fresh gas to fix this problem. You may also need to clean or replace the spark plug if it is fouled with old gas. Make sure that there is fresh fuel in the tank. Old or stale fuel can prevent the engine from starting. Always use fresh fuel when possible.

How to Fix Dirty Air Filter Problem?

If your chainsaw won't start after sitting, it's likely due to a dirty air filter. To fix this problem, you'll need to clean your air filter.

Remove the air filter cover and unscrew the air filter.
Remove the air filter.
Replace the air filter with a new one and cover it.

If none of the above methods help you, then you may need a new chainsaw

Conclusion

Chainsaws are essential for landscaping, from trimming hedges to cutting large logs. However, it can be incredibly frustrating when a chainsaw doesn’t start after sitting for a while due to improper maintenance or minor wear and tear. Luckily, with the tips above, you should now know how to diagnose and repair your chainsaw if it is not starting properly. Remember to properly use safety gear before working on any machinery.

If all else fails, you'll have to buy a new chainsaw.