Snowmobile Polaris 120 PRO R (2013 year). Instruction - part 15

 

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Snowmobile Polaris 120 PRO R (2013 year). Instruction - part 15

 

 

61

ADULT SECTION

Maintenance

Engine Oil

Oil Recommendations
POLARIS recommends the use of Performance Synthetic 4-Stroke oil 
(PS-4 or PS-4 Plus) for this engine. PS-4 has been specially formulated 
for use in POLARIS 4-cycle snowmobile engines. It's a fully synthetic, 
high performance, multi-viscosity oil designed to provide the ultimate in 
lubrication performance and protection.

Always check and change the oil at the intervals outlined in the Periodic 
Maintenance Chart beginning on page 50. Perform the break-in oil 
change after 20 hours of operation. Always change the oil any time it's 
contaminated with water, fuel or debris.

NOTICE: Mixing brands or using a non-recommended oil may cause serious 

engine damage. Always use the recommended oil. Never substitute or 
mix oil brands.

Oil Level
Maintain the oil level between the upper and lower marks on the dip-
stick.

1. Position the vehicle on a level 

surface.

2. Stop the engine.

3. Remove the dipstick and wipe 

it dry with a clean shop towel.

4. Insert the dipstick into the oil 

fill hole completely, but do 
not thread it.

5. Remove the dipstick and view 

the oil level.

6. If the oil level is below the 

lower mark on the dipstick, 
add the recommended oil to 
the upper mark.

Upper 

Mark

Dipstick

Lower 

Mark

{

Safe 

Range

62

ADULT SECTION

Maintenance

Engine Oil

Oil Change
1. Support the rear of the 

snowmobile slightly off the 
ground with an appropriate 
snowmobile support.

2. Place a drain pan under the 

drain plug.

TIP: The drain plug is located 

under the bulkhead and in 
front of the engine. 

3. Remove the drain plug.

4. Remove the dipstick and 

wipe it dry with a clean 
shop towel.

TIP: The oil will drain faster with the dipstick removed.

5. Allow the oil to drain completely.

6. Reinstall the drain plug and sealing washer. Torque to 10 ft. lbs. 

(13.5 Nm).

7. Using a long funnel, pour 20 oz. (.6 l) of the recommended oil into 

the oil fill hole.

8. Insert the dipstick into the oil fill hole completely, but do not thread 

it.

9. Remove the dipstick and view the oil level.

10. If the oil level is below the lower mark on the dipstick, add the rec-

ommended oil to the upper mark.

Dipstick

Drain Plug

63

ADULT SECTION

Maintenance

Track Tension

Track adjustment is critical for proper handling. Always maintain cor-
rect tension and alignment.

1. Operate the snow-

mobile to warm up 
the track.

2. Stop the engine.

3. Support the rear of 

the snowmobile 
slightly off the 
ground with an 
appropriate snow-
mobile support.

4. Hang a 10-pound 

(4.5 kg) weight 8 
inches (20 cm) from 
the center of the 
rear idler wheel.

5. Measure the distance between wear surface of the track clip and the 

plastic slider at the point where the weight is hanging. Deflection at 
this point should be 3/4" (19 mm).

6. If the track tension needs adjustment, follow the procedure on page 

64.

TIP: If the rear idler wheel assembly 

washers are removed, be sure 
they are reinstalled with the 
domed side of the washer facing 
outward as shown.

8" (20 cm)

10 lbs. 

(4.5 kg)

Adjusting 

Screw

Idler 

Shaft 

Bolt

Rear Idler 

Wheel 

Washer

Domed Side 

Outward

64

ADULT SECTION

Maintenance

Track Tension Adjustment

1. Loosen the rear idler shaft bolt.

2. Tighten or loosen the track adjusting screws to provide equal adjust-

ment on both sides of the track.

3. Repeat the measurement on the other side of the track. 

TIP: Check tension more frequently when the machine is new.

4. Start the engine and slowly rotate the track at least five revolutions. 

Allow the track to stop rotating by itself (do not apply brakes).

5. Check and adjust track alignment. See page 65.

6. Tighten the idler shaft bolt. Torque to 35-40 ft. lbs. (47-54 Nm).

7. Readjust the toe block to proper spacing and tighten.

WARNING

When performing the following checks and adjustments, stay clear of all mov-
ing parts to avoid serious personal injury. Make sure the track contains no 
objects that could be thrown out while the track is rotating. Keep clear of track. 
This includes but is not limited to hands, tools, feet and clothing. Make sure no 
one is standing close to the machine while the track is rotating.

 

 

 

 

 

 

 

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