Heres another one, on my 350 fourtrax when does the oil cooling fan engage? I would guess its engaged automatic via thermostat. The one i have was rigged up with a switch for manual operation. How often does this have to run?

 

Thanks trx350

devocorky on my 350 the fan is wired so it comes on whe you turn the ignition on. I don't know if thats the way it is supposed to be or not. The fuel pump on my 350 is also wired to the ignition. But it is supposed to be wired to the fuel pump relay (so when the engine gets spark the fuel pump pumps fuel).