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IMPORTANT

The Owner's Manual for this vehicle contains warnings, instructions and other information you must read and fully understand before safely riding or performing maintenance on this vehicle. Always follow the warnings and instructions in Owner's Manual.

Click the link above for the Table Of Contents, or download a full PDF of the Owner Manual in the Owner Support area of Polaris.com.

Bleeding the Cooling System

CAUTION

Steam and hot liquids will cause burns to your skin. Never bleed the cooling system or remove the pressure cap when the engine is warm or hot.

Use of a non-standard pressure cap will not allow the recovery system to function properly. If the pressure cap needs replacement, contact your dealer for the correct part.

NOTICE
If coolant flow becomes restricted or plugged, coolant loss, air lock, or engine damage may result. Most cooling systems are equipped with a filter that should be periodically inspected or replaced.

If coolant becomes low in the tank, bleed the system of trapped air. Perform the bleeding procedure when the engine is cold.

  1. Allow the system to cool completely, then loosen the bleed screw and fill the reservoir to the FULL COLD mark. Tighten the screw.

  2. Apply the parking brake and run the engine at idle RPM until the thermostat opens (5 to 8 minutes) and stays open.

    TIP
    As the thermostat draws in cold coolant from the heat exchangers, the cold coolant may close the thermostat. Make sure it opens and stays open.

  3. Tip the snowmobile slightly onto its right side. Cycle the RPM from idle to enough RPM (4000) to get coolant to flow, but not enough to engage the clutch.

  4. Tilt the machine slightly onto its left side so that the coolant bottle is the highest point in the cooling system. Cycle the RPM as outlined in step 3.

    TIP
    There must be enough coolant flow to purge the air from the front close-off cooler so you can observe this air reaching the bottle.

  5. Return the snowmobile to its upright position and loosen the bleed screw at the top of the water outlet manifold. When all trapped air has been purged, tighten the screw.

  6. Turn off the engine and release the parking brake. Allow the system to cool completely.

    TIP
    After cool-down, three or more ounces (88 ml) of coolant may have to be added.

  7. Remove the pressure cap and check the coolant level. Add coolant to fill line if necessary.

Parent topic: Cooling System