I have the exact same problem. Been to dealer twice. Unit is brand new and only happens when running in low and low speeds. First time they said it was low on coolant. I just picked it up today after it being there for two weeks. They said they can't replicated the problem. When it overheats it doesn't appear the fan is running. Once it cools down the fan is running. They want me to take pictures and videos the next time it happens. No clue how that will help. Owned it for two months and it's been at the dealer for close to a month of that. I'm ready to try just about anything. Can anyone give detailed instructions on the burping technique? I know the nose needs to be elevated. Does the radiator cap need to be off completely or just loose? And what will keep it from just boiling over when it heats up?
Although mine has never overheated or needed burping, my thinking tells me to:
1: Verify that the radiator and expansion tank are full of coolant and both caps are closed tight.
2: Run the machine on a level surface until it gets to operating temperature to open thermostat (noticeable when both radiator hoses get hot).
3: While still running, raise front of machine to at least a 60 degree angle and let idle for no more than 30 seconds (to avoid engine oil starvation).
4: Lower machine and turn engine off.
5: Allow engine to cool and then check coolant levels levels in radiator and expansion tank.
If you had trapped air in the system, the coolant level should be lower than when you started. If so... top off and test. Let us know, thanks.
Edit: The radiator cap should be closed completely to allow pressure to build. The trapped air isn't escaping the system at this point, it's just trading places with the coolant in the radiator. The air will actually escape when you top off your radiator.
