Polaris 600 RUSH - Manual (Page 91)

87
MAINTENANCE
Cooling System
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.
1. Position the vehicle so that the top of the tunnel is level. Elevate the
front of the vehicle slightly if necessary.
2. Make sure the engine is cold before continuing.
3. Remove the right side panel.
4. Fill the coolant bottle with properly mixed coolant to the maximum
mark. Do not install the pressure cap at this time.
5. 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.
6. Add coolant to the coolant bottle to the maximum mark.
7. Reinstall the side panel. Always ensure that the hood and side pan-
els are securely in place before starting the engine.
8. Start the engine and run at a fast idle for two to three minutes.
Loosen the bleed screw occasionally to purge any trapped air.
TIP: Engine temperature should reach 130 _ F (54 _ C) before continuing.
9. Stop the engine and check the coolant bottle level. Add coolant as
needed. Reinstall the side panel.
10. Carefully and briefly touch the top of the tunnel cooler under the
seat. If the system is bled properly, the cooler will be warm to the
touch. If not, repeat step 8. Lift the front of the snowmobile slightly
to assist in the bleeding.
11. Remove the side panel. Reinstall the pressure cap. Reinstall the side
panel.
12. Carefully lower the front end of the snowmobile.