Symptoms
- Gas model pull cord doesn't produce a start
- Battery model shows no power or lights
- Engine sputters and dies right after starting
- Hasn't been used in months
Likely causes
- CommonStale fuel (gas models)Old gasoline gums the carburetor.
- CommonDischarged battery (battery models)Batteries lose charge in storage.
- CommonFouled spark plug (gas models)Carbon buildup weakens spark.
- PossibleClogged air filterA dirty filter restricts airflow needed to start.
- PossibleSafety trigger or lock-off not engagedMany blowers require the safety lock and trigger pressed together.
What to do
- For gas models, check fuel freshness and drain/refill if stale.
- For battery models, charge fully and confirm the battery seats securely.
- Pull the spark plug on gas models and check for fouling.
- Clean or replace the air filter.
- Confirm any safety lock or trigger interlock is engaged as designed.
- Check the on/off switch is in the correct position.
- If a gas model still won't start, the carburetor may need professional cleaning.
Tools and parts
- Spark plug socket
- Fresh gasoline
- Battery charger
Leaf blower spark plugSearch: “leaf blower spark plug”
Leaf blower batterySearch: “cordless leaf blower battery replacement”
When to call a pro
A small-engine shop can service a gas blower's carburetor, or a battery pack can be replaced if it no longer holds charge.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.