2001 Polaris Sportsman 400-500 DUSE and H.O. Service Manual, Page 50Get this manual
MAINTENANCE
COOLANT LEVEL INSPECTION
Therecoverybottle, locatedontheleft sideof themachine, must be maintained between the minimum and maximum levels indicated on the recovery bottleWith the engine at operating temperature, the coolant level should be between the upper and lower marks on the coolant reservoirIf not: 1Remove reservoir capInner splash cap vent hole must be clear and open2Fill reservoir to upper mark with Polaris Premium 6040 Anti FreezeCoolant or 5050 or 6040 mixture of antifreeze and distilled water as required for freeze protection in your area3Reinstall capNOTE: If overheating is evident, allow system to cool completely and check coolant level in the radiator and inspect for signs of trapped air in systemRecovery Bottle Accessible Under Side Panel
RADIATOR COOLANT LEVEL INSPECTION