2005 Polaris Sportsman 400/500 Service Manual, Page 39Get this manual
MAINTENANCE
RADIATORGRILL SCREEN
A Antifreeze Hydrometer 5050 or 6040 mixture of antifreeze and distilled water will provide the optimum cooling, corrosion protection, and antifreeze protectionDo not use tap water, straight antifreeze, or straight water in the systemTap water contains minerals and impurities which build up in the systemStraight water or antifreeze may cause the system to freeze, corrode, or overheatPolaris 6040 Anti-FreezeCoolant (PN 2871323) B
1Check radiator (A) air passages for restrictions or damageCheck and clean the radiator screen (B)2Carefully straighten any bent radiator fins3Remove any obstructions with compressed air or low pressure water
COOLING SYSTEM HOSES