so I see that Clutch Fan was the first suggestion, cracked head was the second.
on mine, the water pump had gone bad, put a new pump and still have the same issue described above, 10-20 minutes it's in the red zone... let it idle for 2 minutes and she cools right down. I have purchased a new head gasket and head bolts, I'm guessing that the head needs to come off and be checked for cracks.
I've also tried a new thermostat as well as running it without one.. same timing on the overheating. It has shut down once on it's own but other times, I just don't let it get that hot before letting it idle. Kinda annoying cause it's a beast of a machine and I love it, just need to keep it cool
Lawn & Turf Equipment Repar