Start with the exact symptom
A machine that does not crank needs a different inspection from one that cranks normally but never fires. Note whether the starter turns, whether the engine briefly starts, and whether choke or starting fluid changes the symptom.
- No crank or slow crank
- Cranks but will not fire
- Starts briefly and dies
Fuel is common, but not the only cause
Gasoline left in the tank and carburetor can deteriorate during storage. Restricted fuel flow may cause hard starting, surging, or choke-only running, but replacing fuel parts before checking spark and compression can waste time.
- Fuel age and flow
- Spark plug and ignition
- Air filter and intake
- Compression and valve condition
Avoid repeated starting attempts
Heavy starting-fluid use and repeated cranking can flood the engine, drain the battery, or hide the original symptom. Include what the machine did before it stopped running and how long it has been sitting when requesting service.