Finally found the limits of abusing the old Deere 4200 using a 5’ bush hog as a mulcher for 3-5” trees.
One of the cutoff tree stubs exacted its revenge and jammed up in one side of the undercarriage and snapped off the mid pto engagement arm and tore out the sensor connector.
I don’t use the mid pto for anything, so I’m not too bent out of shape about that, but The dash now shows pto engaged at all times whether or not it’s actually engaged so you can’t get off the seat without it killing the engine and you can’t crank it unless you jump the solenoid on the starter while holding the seat down with your other hand. Luckily I have. 6.5’ wingspan for this feat.
Completing the circuit at the 2 pin connector with a jumper wire doesn’t work, and leaving it disconnected doesn’t work either, so I guess maybe one wire wants to go to ground?
I suppose I can google a seat switch bypass but that’s probably less than ideal, and I’m sure the safety guys will tell me osha is going to visit my backyard and fine me.