2005 Polaris Touring Snowmobiles Owners Manual - Page 103

2005 Polaris Touring Snowmobiles Manual

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MAINTENANCE CAUTION General Maintenance Bleeding the Cooling System 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. Surge Tank Models 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 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. 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 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. 100

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100
MAINTENANCE
General Maintenance
Bleeding the Cooling System
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.
Surge Tank Models
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 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.
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 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.