I'm having trouble with the PTO Clutch on my JD 318. I'll mow fine for 30 -40 minutes and then it will start shutting off all by itself. For awhile I can usually get it to work by turning off and on the PTO switch. Then it will get to a point where I can only start it again by turning off then on the switch and jerking the hydrostatic to forward quickly (sort of like popping the clutch on a car). By the end of mowing it will shut off every 75 - 100 feet.
Occassionally the engine will also die. But when I shut off the PTO switch, it starts right up when I turn the key.
I'm thinking it has something to do with all the safety interlocks, brake/seat/hydrostatic in neutral, but if that's it why would it wait until everything is really warmed up?
Hopefully in the next couple of days I'll get a chance to check all the connections on the safety interlocks and look for any loose or frayed wires.
Any help would be appreciated.