Why your chainsaw starts and then dies: Common causes and easy fixes

If your Husqvarna chainsaw starts and then dies, there can be more than one reason for this.

Let’s go over the most common reasons your chainsaw shuts off after starting—and how you can fix them.

Is your chainsaw filled with fresh fuel?

First, check the fuel tank.

If the chainsaw doesn’t have enough fuel, or if the fuel is old, it may start briefly and then stop.

Old or stale fuel can clog the fuel system. Fuel that has been sitting for weeks or months wears down and loses its effectiveness, leading to starting issues.

Tip:

• Always use fresh fuel.
• If you plan to store your chainsaw for a while, empty the fuel tank first.

IMPORTANT: Damage caused by stale fuel is not covered by warranty. If your chainsaw has been affected by old fuel, visit your local authorised Husqvarna dealer for help.

Dirty or clogged air filter

If your chainsaw starts but won’t stay running, a dirty air filter might be restricting airflow to the engine.

How to fix it:

• Remove the air filter.
• Clean it using warm, soapy water.
• Let it dry completely before reinstalling.
• If the air filter is damaged or too dirty, replace it.

Keeping the air filter clean helps your chainsaw run more efficiently and last longer.

Clogged spark arrestor

A clogged spark arrestor (the small screen on the exhaust) can also cause your chainsaw to stall.

Solution:

• Carefully remove and clean the spark arrestor using a soft brush.

Cleaning the spark arrestor improves airflow and helps prevent your chainsaw from dying during use.