Snowmobile Polaris 600 IQ Racer (2015 year). Instruction - part 17

 

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Snowmobile Polaris 600 IQ Racer (2015 year). Instruction - part 17

 

 

71

MAINTENANCE

Cooling System

Coolant High Temperature Indicator Light

The high temperature indicator light will illuminate when engine 
coolant temperature becomes too hot for safe continued operation of the 
engine. If you must drive your machine after the high temperature 
indicator light has come on, drive slowly and stop frequently to allow 
the engine to cool down. Driving in deep snow will also help cool the 
engine. See your dealer for service. 

Add coolant if the level is low. Engine performance will be reduced if 
you continue operating when the high temperature light is on.

Flushing the Cooling System

To ensure that the coolant maintains its ability to protect the engine, we 
recommend that the system be completely drained every five (5) years 
and fresh Antifreeze 50/50 Premix added. This service must be 
performed when the engine is cold. Ask your POLARIS dealer to check 
the coolant when he performs the fall tune-up on your snowmobile.

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.

72

MAINTENANCE

Cooling System

Bleeding the Cooling System

NOTICE: 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.

If coolant becomes low in the tank, bleed the system of trapped air. 
Perform the bleeding procedure when the engine is cold.

1. Allow the system to cool completely, then loosen the bleed screw 

and fill the reservoir to the FULL COLD mark. Tighten the screw.

2. Apply the parking brake and run the engine at idle RPM until the 

thermostat opens (5 to 8 minutes) and stays open.

TIP: As the thermostat draws in cold coolant from the heat exchangers, the cold 

coolant may close the thermostat. Make sure it opens and stays open.

3. Tip the snowmobile slightly onto its right side. Cycle the RPM from 

idle to enough RPM (4000) to get coolant to flow, but not enough to 
engage the clutch. This allows air to bleed from the rear crossover 
tube. 

TIP: There must be enough coolant flow to purge the air from the crossover 

hose or rear cooler so you can observe this air reaching the bottle.

4. Tilt the machine slightly onto its left side so that the coolant bottle 

is the highest point in the cooling system. Cycle the RPM as 
outlined in step 3.

TIP: There must be enough coolant flow to purge the air from the front close-off 

cooler so you can observe the air reaching the bottle.

5. Return the snowmobile to its upright position and loosen the bleed 

screw at the top of the water outlet manifold. When all trapped air 
has been purged, tighten the screw.

6. Turn off the engine and release the parking brake. Allow the system 

to cool completely.

TIP: After cool-down, three or more ounces (88 ml) of coolant may have to be 

added.

7. Remove the pressure cap and check the coolant level. Add coolant 

to the fill line if necessary.

73

MAINTENANCE

Exhaust System

Check the exhaust system for wear or damage at approximately 1000 
miles (1600 km). To inspect, allow the engine and exhaust system to 
cool completely. Open the hood and inspect the muffler and pipes for 
cracks or damage. Check for weak or missing retaining springs or 
damper/support grommets. 

CAUTION! Hot exhaust system parts can cause burns. Allow adequate time for 
the exhaust system to cool. Never perform this procedure with the engine 
running.

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 (1).

3. Finger tighten the adjuster 

bolt (2) 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.

5. Release the brake lever lock.

1

2

74

MAINTENANCE

Brakes

Hydraulic Brake Inspection

Inspect the brake lever reserve before each use of the snowmobile. See 
page 44.

Brake pads must be replaced when the brake pad material becomes 
thinner than the backing plate (approximately 1/16 inch or 1.5 mm). A 
kit is available for replacing brake pads. See your dealer.

WARNING! Brake failure during operation can result in serious injury or death. 
Properly functioning brakes are vital to your safety. Be sure the brake pads do 
not drag on the disc and that brake lever travel is not excessive. Always replace 
brake pads when the brake pad material becomes thinner than the backing plate 
(approximately 1/16 inch or 1.5 mm).

Excessive Lever Travel

Hydraulic brakes are self-adjusting, but if excessive brake pad clearance 
develops, bring the machine to an authorized POLARIS dealer for 
inspection and adjustment.

Brake Components

1. Brake Caliper

2. Chaincase

3. Brake Disc

4. Backing Plate

5. Brake Pad Mate-

rial (Replace when 
thickness is less 
than 1/16 inch/1.5 
mm).

2

1

3

5

4

 

 

 

 

 

 

 

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