2007 Polaris Sportsman 700/800/800 X2 EFI Service Manual, Page 39Get this manual
MAINTENANCE Coolant StrengthType
Test the strength of the coolant using an antifreeze hydrometer
Radiator
123Check radiator external air flow passages for restrictions or damageCarefully straighten any bent radiator finsRemove any obstructions with compressed air or low pressure water
Cooling System Pressure Test
See Chapter for pressure test proceduresAntifreeze Hydrometer 5050 or 6040 mixture of antifreeze and distilled water will provide the optimum cooling, corrosion protection, and antifreeze protection Do not use tap water, straight antifreeze, or straight water in the systemTap water contains minerals and impurities which build up in the system Straight water or antifreeze may cause the system to freeze, corrode, or overheatPolaris 6040 Anti-Freeze Coolant (PN 2871323)
Reservoir Level Inspection WARNING
Never remove the radiator pressure cap when the engine is warm or hotEscaping steam and fluid can cause severe burnsThe engine must be allowed to cool before removing the pressure capRemove any obstructions with compressed air or low pressure waterWith the engine at operating temperature, the coolant level should be between the upper and lower marks on the coolant reservoirIf it is not: Remove reservoir capVerify the inner splash cap vent hole is clear and open2Fill reservoir to upper mark with Polaris Premium 6040 Anti FreezeCoolant (PN 2871323) or 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 radiatorInspect for signs of trapped air in system1