Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
What is the battery voltage? Is it above 12.5 volts? Seat switch and harness ok? Pto off?
If you follow the positive battery cable to the starter solenoid, can you jump the switch wire to the battery cable terminal, and get the engine to spin? This is the quick test of battery, cables, and starter solenoid and starter.
The switch wire from the key switch goes to the solenoid, to close it. So touching the switch wire to the battery cable terminal is the same connection the key switch makes when you go to start.