Small Engine Troubleshooting Problems? Ask a Mechanic Now.
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Sounds like you may have a faulty seat switch being as it has died when PTO was engaged. When this happens it is due to the mower thinks no one is on the seat when engaged and kills engine
Hmmmm. Let me rethink then. You stated all connections are tight and clean. (BATTERY, SOLENOID, IGNITION SWITCH, STARTER)
So with the seat switch bypassed, still have to jump solenoid to start machine? Check all other safety switches for continuity as it will be one of them. PTO switch, brake switch.
yes that would be correct with the PTO switch. NO, normally engine will do nothing if bad safety switches. Do you have seat switch hooked back up correctly currently? Could be a bad ignition switch, but once engine is started you can kill engine with switch, so normally that means it is good.
It could be yes. Usually the last thing, so that is probably it. Check that the starter gear is not jammed on the flywheel. You can also try to power the starter directly and see if engine turns over. I thought you had stated you could jump the solenoid and it start.
if it starts when solenoid jumped it should be fine. Can you still jump it currently by the solenoid?
Everything sounds like solenoid, and it is possible to get a bad one, or it burn up during installation. Everything else that would cause this issue has been tested and checks out good. When you turn the key, is power being switched over to the other side of the solenoid?
Check the voltage at the starter when you turn the key. You may not be getting full voltage to the starter by using the key. If this is the case, there is a short in the wiring somewhere. Could be the ignition switch even though it ohms out. Sorry I was unable to solve your issue. If I can do anything else please let me know as I am here for you