Why does my lawn mower start and then stop working?

If your Husqvarna petrol lawn mower starts but then stalls or dies shortly after, it’s an issue with several possible causes—all of which can be easily identified or resolved.

Common reasons a lawn mower starts then stops

Here are the most likely culprits when your lawn mower runs briefly, then shuts off:

Old or stale fuel

• Fuel that’s been sitting for more than 30 days can lose its effectiveness and cause poor combustion or engine stalling.

Dirty or faulty spark plug

• A worn or carbon-covered spark plug may provide inconsistent ignition, leading the engine to start and then shut down.

Clogged or damaged air filter

• When the air filter is blocked with dirt and debris, your petrol lawn mower cannot get enough air to run properly, which may cause it to die shortly after starting.

If your Husqvarna lawn mower starts and then dies, our Product Assistant can walk you through personalised troubleshooting steps based on your specific symptoms:

Open product Assistant