Polaris IQ Turbo Dragon - Manual (Page 114)

111
MAINTENANCE
Cooling System
Bleeding the Cooling System
8. While observing the coolant reservoir bottle and making sure the
coolant level is visible, observe the engine temperature in the digital
display. The temperature should rise steadily, indicating that the sys-
tem is bleeding properly.
9. If the temperature does not rise at all after approximately one
minute, stop the engine and see your dealer for service.
10. While the engine temperature is rising, allow the engine to idle until
the temperature reaches approximately 185
° F (85° C). Wait for the
level in the bottle to go down. When the level stabilizes (or if the
level reaches the bottom of the bottle), stop the engine. If the cool-
ant level is unchanged, skip to step 13.
11. Allow the engine to cool, then carefully remove the pressure cap
and add coolant through the filler neck until the reservoir bottle is
full. Reinstall the pressure cap and start the engine.
12. Repeat steps 10-11 until the coolant level in the bottle no longer
falls at an engine temperature of 185 ° F (85° C) or greater.
13. Feel the coolers at the rear of the snowmobile (rear cooler, de-icers,
grippers, as equipped). These components should be warm to the
touch, indicating the thermostat is open and the entire cooling sys-
tem is bleeding.
14. Some air bubbles may still be trapped in the rear cooler. To ensure
they are removed, ride the snowmobile at various throttle openings
for 2-3 miles (3-5 km). Recheck the coolant level in the reservoir
bottle. The bottle should be full.
15. Feel the coolers on both sides of the snowmobile. If the coolers are
warm, coolant is circulating through the system properly.
16. Stop the engine. Allow it to cool completely.
17. Remove the coolant overflow tank cap. Add coolant to the “COLD
FILL” mark on the tank. Reinstall the cap.