Polaris 450 S Offroad Vehicle User Manual

Engine Cooling System
Cooling System Bleeding
Bleeding the cooling system is required only if the system has been drained for maintenance
and/or repair. Always allow the engine to cool sufficiently before removing the radiator pres-
sure cap.
1. Remove the pressure cap.
2. Using a funnel, slowly add the recommended coolant. Fill the radiator to the bottom of
the filler neck.
3. Reinstall the pressure cap.
4. Start the engine and allow it to idle for five minutes, or until operating temperature is
5. Stop the engine.
6. After the engine has cooled, add additional coolant to refill the radiator to the bottom of
the filler neck.
7. Operate the vehicle for 20 minutes, allow the engine to cool, then recheck the coolant
level in the radiator. Add coolant as needed.