What to do if my Toro Z Master Professional 5000 Lawn Mower engine does not start?
- JJoshua DuncanAug 26, 2025
If your Toro Lawn Mower engine doesn't start, starts hard, or fails to keep running, several factors could be at play. First, ensure the fuel tank isn't empty and the fuel-shutoff valve is open. Check that the oil level in the crankcase is sufficient and the throttle is positioned midway between the SLOW and FAST settings. Also, a dirty fuel filter or air cleaner can cause issues, so replace or clean them as needed. Inspect the spark plug, adjusting or replacing it if it's fouled or improperly gapped, and verify the spark-plug wire is securely connected. Finally, check the seat-switch indicator, replacing the seat if necessary.