2003 Polaris Universal Snowmobile Owners Manual - Page 133

MAINTENANCE General Maintenance Flushing the Cooling System To ensure that the coolant maintains its ability to protect the engine, the system should be completely drained every two years and a fresh 50/50 or 60/40 mixture of antifreeze and distilled water should be added. This service must be done when the engine is cold. Ask your Polaris dealer to check the coolant when he performs the fall tune-up on your snowmobile. Bleeding the Cooling System WARNING Steam and hot liquids burn. Never bleed the cooling system or remove the pressure cap when the engine is warm or hot. Serious personal injury could result. If the pressure cap (A) needs replacement, contact your dealer for the correct part. Use of a non-standard pressure cap will not allow the recovery system to function properly. Recovery System Models A If the coolant level becomes low in the recovery tank, bleed the system of any trapped air. Visually inspect the coolant filter (B) and replace it if it's dirty. 1. Fill the recovery tank with coolant to the maximum indicated mark. 2. Elevate the front end of the machine slightly to aid bleeding of the heat exchangers. B 3. With pressure cap removed, add coolant and fill to the top of the filler neck. 4. Install the pressure cap with the lever lock up, in its release position. 5. Run the engine at various RPMs for two to three minutes to purge the system of trapped air. 6. Close the lever lock and check the recovery tank fluid level. 131