I have been chasing a no start when hot issue. Measured voltage at starter and would be different cold to hot but not consistent. Cleaned connection at key switch, brake interlock switch, PTO switch with little change in cold/hot response. I found by operating brake switch and/or PTO switch when a no starter spin, the starter would then operate. I now have replaced the brake switch and am watching the PTO switch. Short answer, the switches are failing internally. Check voltage at PTO. Should be battery voltage when PTO is on. If not the same voltage cold to hot, suspect wiring connections and/or switches.
|