Bleeding The Cooling System - Polaris 600 Switchback Owner's Manual

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: Severe engine damage may occur if the cooling system becomes
restricted or plugged or contains trapped air pockets.
Peform this procedure in a well-ventilated area. Use the recommended
coolant. See page 91.
1. Open the side panels and remove the hood.
2. Close the side panels.
WARNING! Never operate a snowmobile with the side panels open or removed.
3. Position the vehicle with the right ski and control arms elevated at a
45-degree angle.
4. Fill the coolant bottle to the COLD FILL mark.
5. Using an 8mm wrench, loosen the air bleed screw located on the top
of the coolant outlet elbow. Use a shop towel to catch any coolant
that leaks from the bleeder. Tighten the screw after a steady stream
of coolant flows from the bleeder.
6. Fill the coolant bottle to the COLD FILL mark.
7. Install the coolant bottle cap to the first lock. Do not tighten to the
fully seated position.
8. Lock the parking brake.
9. Start the engine and run at a fast idle for several minutes, until the
heaters are warm to the touch. Loosen the bleed screw occasionally
to purge any trapped air.
10. When all heater extrusions are warm to the touch, stop the engine.
11. Allow the engine and cooling system to cool.
12. Fill the coolant bottle to the COLD FILL mark.
13. Carefully lower the front end of the snowmobile.
14. Secure the bleed screw and reinstall the pressure cap.
15. Open the side panels and reinstall the hood. Close the side panels.
MAINTENANCE
93