Polaris 2005 RMK - Manual (Page 87)

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MAINTENANCE
General Maintenance
Engine Cooling - Liquid Cooled Models
Bleeding the Cooling System
If the pressure cap needs replacement, contact your dealer for the
correct part. Use of a non-standard pressure cap will not allow the
cooling system to function properly.
WARNING
Steam and hot liquids will cause serious burns to your skin.
Never bleed the cooling system or remove the pressure cap when
the engine is warm or hot.
1. Remove the pressure cap and fill the coolant bottle with properly
mixed coolant to the maximum mark.
2. Elevate the front end of the machine slightly to aid in bleeding.
3. Remove the bleed screw from the water outlet manifold and/or the
thermostat housing. Allow the coolant to bleed through the system
until it runs out the bleed holes. Reinstall the bleed screw into the
manifold.
4. Add coolant to the coolant bottle to the maximum mark.
5. Start the engine and run at a fast idle for two to three minutes. Loosen
the bleed screw occasionally to purge any trapped air.
6. Stop the engine and check the coolant bottle level. Fill as required.
7. Feel the heat exchanger on the rear end of the tunnel. If the system is
bled properly, it will be warm to the touch. If they’re not warm, repeat
step 5.
8. Reinstall the pressure cap and carefully lower the front end of the
machine.
CAUTION
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.