Snowmobile Polaris 340 Edge / 550 LX (2008 year). Instruction - part 23

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MAINTENANCE

Clutch System

Drive Belt Removal

1. Stop the engine after operating in a forward motion.
2. Turn the ignition key off. Wait for the engine to stop completely.
3. Lock the parking brake (if equipped).
4. Open the hood. 
5. Remove the clutch guard retain-

ing pin and open the clutch 

guard.

6. Locate the L-wrench in the tool 

kit and install it into the open 

threaded hole in the outer sheave 

of the clutch. Rotate the wrench 

until the sheaves open far enough 

to remove the belt.

7. Firmly grasp the belt midway 

between the clutches and pull 

upward and rearward to remove. 

See illustration.

CAUTION

Do not attempt to remove the drive belt after operating in reverse. The snow-

mobile must be stopped after forward motion to prevent damage to compo-

nents during belt removal.

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MAINTENANCE

Clutch System

Drive Belt Installation

1. Drop the drive belt over the 

drive clutch and pull back 

the slack. 

NOTE: To ensure satisfactory 

belt life, install belts so 

they operate in the 

same direction of rota-

tion by positioning the 

identification numbers 

so that you can read 

them. If required, sepa-

rate the sheaves as 

outlined in the belt removal procedures.

2. Turn the driven clutch moveable sheave clockwise while pushing 

inward and forcing the belt down between the sheaves.

3. Hold the belt down between 

the sheaves and roll the bot-

tom portion over the outer 

clutch sheave. Work the belt 

to the outer edge of the 

sheave.

4. Rotate the L-wrench to 

tighten the sheaves. Remove 

the wrench and store in the 

tool kit.

5. Close the clutch guard and 

reinstall the retaining pin.

6. Close and secure the hood and release the parking brake.

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MAINTENANCE

Clutch System

n

Drive Belt Deflection

Measure belt deflection with 

both clutches at rest and in 

their full neutral position.

Place a straight edge (1) on the 

belt and apply downward pres-

sure while measuring at point 

2. This measurement should be 

1 1/4I (3.2 cm).

Drive Belt Adjustment

Belt deflection should be adjusted without removing the clutch from the 

jackshaft.
1. Loosen the 7/16I jam nut on the belt width adjuster.
2. Using a 1/8I Allen wrench, adjust the threaded set screw as needed.

NOTE: Turn the set screw in (clockwise) to increase the distance 

between the sheaves and out (counterclockwise) to decrease 

the distance.

3. Tighten the jam nut.

1

2

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MAINTENANCE

Clutch System

Torque Stop

If your snowmobile is equipped with 

an engine torque stop, periodically 

check torque stop clearance.

With clutches in proper alignment, 

the torque stop clearance should be 

.010I-.030I (.25-.75 mm) from the 

engine case. 

Adjust if necessary, and lock the jam 

nut.

Chain Tension

Maintain the proper chain tension as outlined on page 84.

Fall Tune-Up

For maximum performance, arrange for a fall service tune-up with your 

Polaris dealer. His experienced and trained service technician will keep 

your machine in peak operating condition.

Tool Kit

A tool kit is included with each machine for emergency and routine 

maintenance. Always keep the tool kit with the snowmobile.

.010-.030

I

(.25-.75 mm)