2002 Polaris Universal Snowmobile Owners Manual - Page 124

MAINTENANCE General Maintenance CAUTION Most cooling systems are equipped with a filter that should be periodically inspected or replaced. If coolant flow becomes restricted or plugged, coolant loss, air lock or engine damage may result. Surge Tank Models 1 Remove the pressure cap and fill the recovery tank with properly mixed coolant to the maximum indicated mark. 2 Elevate the front end of the machine slightly to aid in bleeding of the heat exchangers. 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 Fill the recovery tank to the maximum indicated mark. 5 Start the engine and run at a fast idle for two to three minutes. Occasionally loosen the bleed screw to purge any trapped air in the system. 6 Shut off the engine and check the recovery tank level. Fill as required. 7 Feel the heat exchangers under the running boards. If the system is bled properly, they'll be warm to the touch. If they're not, repeat step 5 Lift the front of the machine slightly to assist in the bleeding. 8 Replace the pressure cap and carefully lower the front end of the machine. 122