Where is the thermostat located at on a 500 sportmans polaris 4 wheeler?

The thermostat on a Polaris Sportsman 500 ATV is typically located in the water pump housing, near the engine. To access it, you usually need to remove the plastic cover and possibly some other components, depending on the model year. Consult your owner’s manual for specific instructions related to your model, as the exact location may vary slightly.