Chainsaw spark arrestor: purpose, location & maintenance guide

What is a purpose of a chainsaw spark arrestor

A spark arrestor is a small metal screen built into your chainsaw’s muffler.

Its job is to stop hot particles, like carbon or debris, from leaving the exhaust.

By breaking large particles into smaller ones, the spark arrestor reduces their heat and makes them less likely to cause a fire hazard.

This simple part plays a big role in keeping you safe and protecting the environment when working outdoors.

Where is a spark arrestor located on a chainsaw?

The spark arrestor is usually found on the front, top or side of the muffler. It’s secured with a small cover and screws.

Removing a spark arrestor

1. Take off the muffler cover.
2. Unscrew and carefully pull out the spark arrestor.

Spark arrestor maintenance tips

Keeping your spark arrestor clean ensures your chainsaw runs smoothy and safely.

Here is what to check:

• Condition: Make sure the screen has no rips, tears or holes.
• Carbon build-up: A clogged arrestor restricts airflow, lowers engine RPM and makes the chainsaw “breathe” poorly.

Why maintenance matters

A clean spark arrestor not only helps prevent wildfires, but also keeps your chainsaw running at full power.

Regular checks are quick and easy—and they extend the life of your tool.

How to clean a spark arrestor

1. Remove the spark arrestor.
2. Scrub away any carbon deposit with a wire brush.
3. Reinstall the screen securely.