Snowmobile Polaris Turbo IQ LXT (2014 year). Manual - part 28

115

MAINTENANCE

Cooling System

Flushing the Cooling System

To ensure that the coolant maintains its ability to protect the engine, the 
system should be completely drained every two years and a fresh mix-
ture of antifreeze and distilled water should be added. Have your 
POLARIS dealer perform this service.

Bleeding the Cooling System

Bleed the cooling system at the intervals outlined in the Periodic Main-
tenance Table beginning on page 91. In addition, bleed the cooling sys-
tem any time one or more of the following conditions exist.

• A component of the cooling system has been serviced or replaced 

(including coolers, radiator, engine, coolant lines and oil cooler)

• A cooling system failure occurs, resulting in coolant loss

• A coolant line has been disconnected for any reason

• A coolant leak occurs

116

MAINTENANCE

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.

1. Read the entire coolant bleed procedure before beginning.

2. Move the snowmobile into a well-ventilated area. Allow the engine 

to cool completely.

3. Open the hood.

4. Remove the coolant pressure 

cap carefully.

5. Slowly pour coolant into the 

filler neck until the coolant level 
reaches the top of the rear cool-
ing loop return line on the inside 
of the filler neck. The opaque 
coolant reservoir bottle should 
be full, but may have a small air 
bubble in the top.

CAUTION! Never start the engine 
when the pressure cap is removed.

6. Reinstall the pressure cap. Start 

the engine and allow it to idle. 

7. With the engine idling, observe the coolant level in the reservoir 

bottle. Make sure that the coolant level is always visible in the bot-
tle. If the level reaches the bottom of the bottle, stop the engine and 
perform step 11 before continuing to step 8.

Cap

Filler 

Neck

Rear 

Cooling 

Loop line

117

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 min-

ute, 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.

118

MAINTENANCE

Drive Chain Tension

Check drive chain tension weekly 
and before each long trip. To 
obtain correct chain tension:

1. Rotate the driven clutch 

counterclockwise to move all 
chain slack to the tensioner 
side. Lock the brake lever 
lock, or have an assistant 
hold the brake lever firmly.

2. Loosen the adjuster bolt jam 

nut.

3. Finger tighten the adjuster 

bolt until it can no longer be 
adjusted by hand, then back off 1/4 turn.

4. Tighten the jam nut while holding the adjuster bolt. Torque to 18-23 

ft. lbs. (24-31 Nm).

5. Release the brake lever lock.

Adjuster 

Bolt

Jam 

Nut