Symptoms
- Pull cord doesn't produce a start
- Engine sputters and dies
- Strong gas smell suggesting flooding
- Been stored for months without use
Likely causes
- CommonStale fuelGasoline breaks down over a season and won't combust properly.
- CommonDirty air filterA clogged foam or paper filter restricts airflow needed to start.
- CommonFouled spark plugCarbon buildup weakens or kills the spark.
- PossibleFlooded carburetor from over-chokingRepeated choke use without starting floods the engine.
- Less commonClogged fuel filter or lineDebris in old fuel can block the filter or line.
What to do
- Drain and replace fuel that's more than a month or two old.
- Remove the air filter and clean or replace it if dirty.
- Pull the spark plug, check the electrode, and clean or replace it.
- If flooded, hold the throttle open and pull the cord several times with the choke off.
- Check the fuel line for cracks and the tank vent for blockage.
- Make sure the on/off switch is in the correct position.
- If it still won't start, the carburetor may need professional cleaning or rebuilding.
Tools and parts
- Spark plug socket
- Fresh gasoline
Small engine spark plugSearch: “lawn edger spark plug”
Air filterSearch: “lawn edger air filter”
When to call a pro
A small-engine shop can clean the carburetor if fuel and ignition parts are fine but it still won't start.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.