Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Small Wire from the starter solenoid, where the positive battery cable goes to, is the power wire for the keyswitch. It will have a fuse or circuit breaker. Give me the long model number and I can find a wiring diagram for the mower, showing the fuse or breaker.
Fuse id blown or circuit breaker needs reset, or the wire is off or damaged. Follow it from the starter solenoid, back to the keyswitch , using the color of wire.