Maintenance - Cooling System 1996-1998 Polaris Snowmobiles
WARNING: Never remove the pressure cap when the engine is warm or hot. If the pressure cap is to be removed, the engine must be cool to prevent severe personal injury from steam or hot liquid.
Use of a non-standard pressure cap will hinder the recovery system's function. Replace with the correct Polaris cap of the same pressure rating. Refer to the appropriate parts manual.
Coolant Level
Keep coolant level between minimum and maximum levels in the reservoir or surge tank to prevent overheating and engine damage.
Recommended Coolant
Utilize a 50/50 or 60/40 mixture of antifreeze and distilled water depending on the freeze protection needed for your area. Avoid tap water to prevent reduced cooling or filter contamination. Replace coolant every 2 years or if contaminated. Inspect coolant filter annually for contamination and replace if necessary.
Bleeding the Cooling System Pressure Caps
- Allow the system to cool completely. Fill the reservoir with coolant to the maximum mark.
- With pressure cap removed, add coolant to the top of the filler neck.
- Install the pressure cap with the lever lock up in its release position and run the engine at fast idle for 2-3 minutes to purge trapped air. Close the lever lock and check recovery tank fluid level. CAUTION: On models with remote filler neck, use low idle RPM for bleeding to prevent overheating. Reset idle to specified RPM after bleeding.
Bleeding the Cooling System - Surge Tanks
- Allow the system to cool completely. Fill the surge tank with coolant to the maximum mark.
- Start the engine and loosen the bleed screw on the top of the water pump until trapped air is purged. Tighten the bleed screw.
- Loosen the bleed screw at the end and top of the water outlet manifold until trapped air is purged. Tighten the bleed screw.
- Recheck the surge tank coolant level and add coolant if necessary.
