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Showing results for tags 'overheating'.
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Hello everyone, a new member with my first ATV, a 2005 sportsman 800 EFI. I got a good price on it because it had no brakes. A new hand brake, cylinder for the rear brake, rebuild the front calipers and replace the rear has them working. The machine runs great but overheats. I hosed out the radiator and found a leak on the water pump, new gasket for that is on order as is a thermostat and sensor, As long as I had to drain the system I figure I should do the thermostat and I think the sensor is the problem since the fan works fine if I put power to it directly and it doesn't seem to be starting until after the machine is hot. Anything else I should be checking? Any suggestions appreciated.