Why won't my Toro Groundsmaster 3400 Lawn Mower engine start with the key?
- JJohn BarnesAug 22, 2025
If your Toro Lawn Mower's engine won't start with the ignition key, several things could be the issue. First, make sure your foot is off the forward/reverse pedals and check the transmission neutral-interlock switch. Next, ensure the parking brake lever is in the ON position to energize the parking-brake interlock switch. Also, check the setting of the cutting-unit drive interlock switch. Finally, inspect for any faulty electrical connections and correct them.