Polaris 2003 Universal Snowmobiles - Manual (Page 134)

132
MAINTENANCE
General Maintenance
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.
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.
CAUTION