Small Engines (Lawn Mowers, etc.): John Deere 314, Kohler K321 14 hp, john deere 314, mower deck

Question
After running about 10 min. with PTO engaged mowing in moderately heavy grass the engine just stops.  No sputters or jerking.  We have a new coil and fuel flow is ok. It restarts after cooling down.  The PTO load wire at switch is hot enough to melt plastic.  Tractor runs fine without PTO engaged.

Answer
Your PTO may be in need of replacing, Sounds as if the PTO is maybe slipping, and causing high resistance, in hand overheating the wiring, as it tries drawing too much voltage. The only other thing to check is that nothing on the mower deck is hanging up, and over working the PTO.........Tom