[rwmeyer]

Found these online:

Cycle pto switch on/off a few times, then press/release brakes (and maybe lock brake pedal down??) Those 2 switches plus key & solenoid itself control solenoid. If you can start & continue to run by jumping large solenoid terminals, RIO & seat interlocks are OK. Also, check purple wire on solenoid for 12 volts in "Start", then check for ground. Bob

 

[rwmeyer]

If you have 12v to the purple wire and it doesn't turn over, sounds like a bad ground or a bad solenoid. You should have a purple wire to the solenoid and a black wire. Check continuity from black wire to ground. If continuity, I'd say bad solenoid...replace. Bob