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Snowmobile Polaris High Performance (2001 year). Manual - part 52

CLUTCHING

4.36

Drive Belt

Part No.

Belt Width*

(Projected)

Side

Angle

Overall*

Center

Center*

Outer

Circum-

ference*

Notes

3211058

1.250

〉

(31.75mm)



11.03

〉

43.313

〉

340 Touring and 340 Deluxe, P-90 system

3211059

1.250

〉

(31.75mm)



12.00

〉

45.125

〉

P-90 system

3211060

1.250

〉

(31.75mm)



45.605

〉

P-90 system

3211042

1.375

〉

(34.93mm)



12.00

〉

47.250

〉

Service part from older P-85 systems (96-prior)

3211045

1.375

〉

(34.93mm)



12.00

〉

47.125

〉

Close tolerance version of 3211042

3211061

1.375

〉

(34.93mm)



12.00

〉

47.188

〉

CVT compound version of 3211045

3211065

1.438

〉

(36.53mm)



12.50

〉

48.375

〉

CVT Double Cog - big block domestic belt

3211073

1.438

〉

(36.52mm)



12.50

〉

48.375

〉

Double cog - standard compound version of
3211065

3211070

1.375

〉

(34.93mm)



12.00

〉

47.250

〉

Standard on many lower horsepower P-85 drive
system snowmobiles (97-current)

3211067

1.375

〉

(34.93mm)



12.00

〉

47.250

〉

Double cog standard compound version of
3211070

3211066

1.375

〉

(34.93mm)



12.00

〉

47.250

〉

CVT double cog version of 3211070

3211074

1.438

〉

(36.52mm)



12.00

〉

47.625

〉

Double cog standard compound

3211075

1.438

〉

(36.52mm)



12.00

〉

47.625

〉

CVT compound version of 3211074

3211078

1.438

〉

(36.52mm)



11.50

〉

46.625

〉

Double cog, standard compound, EDGE

3211080

1.438

〉

(36.52mm)



11.50

〉

46.625

〉

CVT compound version of 3211078

3211086

1.438

〉

(36.52mm)



11.50

〉

46.500

〉

Double cog, std comp., close tolerance EDGE

3211087

1.438

〉

(36.52mm)



11.50

〉

46.500

〉

CVT compound version of 3211086

Belt dimensions given are nominal dimensions. There is a

variance for all critical dimensions. Clutch

set-up must be inspected when a new belt is installed and, If necessary, clutch set-up must be adjusted.

The drive belt is an important component of the converter system. In order to achieve maximum efficiency from
the converter, drive belt tension (deflection), clutch offset, and alignment must be adjusted properly.

General Belt Selection Guidelines

NOTE: Refer to appropriate parts manual for proper belt. Production belt is recommended unless tuning for a
specific application.

CVT

Increased service life for high horsepower and extended high speed running

Need 1-2 grams heavier drive clutch weight

Good for prolonged high speed running.

Good for aggressive riders

Standard Compound

More aggressive at low speeds

Reduced heat and drive clutch sheave wear

Used for short, higher horsepower runs (Drag Racing)

Good trail belt for lower horsepower engines.

CLUTCHING

4.37

Drive Belt Inspection

Measure belt width and replace if worn severely.
Generally, belt should be replaced if clutches can no
longer be adjusted to provide proper belt deflection.

The top edges have been trimmed on some
drive belts. It will be necessary to project the
side profiles and measure from corner to corner.

Place a straight edge on each side of the drive
belt.

Place another straight edge on top of belt.

Measure the distance where the side straight
edges intersect the top, as shown in the illustra-
tion at right.

Inspect belt for loose cords, missing cogs, cracks,
abrasions, thin spots, or excessive wear. Replace if
necessary.

Inspect belt for hour glassing (extreme circular wear
in at least one spot and on both sides of the belt).
Hour glassing occurs when the drive train does not
move and the drive clutch engages the belt.

Belt Wear / Burn Diagnosis

Possible Cause Of Wear Or Burning

Solution

Driving at or about engagement RPM for extended periods in all
types of conditions

Drive at higher RPM if possible. Gear the machine down. Make
sure belt deflection is at 1.25

〉

to achieve optimum starting ratio

Cold weather startups

Be patient. Warm up engine at least 5 minutes or until it readily
responds to throttle input. For the quickest most efficient driveaway
in extreme cold weather, take drive belt off machine and bring it in to
a warm environment. Break skis and track loose from the snow.
Engage throttle aggressively for short durations for initial cold drive-
away

Towing another machine at or about engagement RPM

When possible, do not go in deep snow when towing another ma-
chine. Use fast, effective throttle to engage the clutch. Not all ma-
chines are intended for pulling heavy loads or other machines.

Spinning track while vehicle is stuck (high RPM, low vehicle speed,
high ambient temp. Example: 8000 RPM, 10mph vehicle speed, 60
mph indicated on speedometer.

Lower the gear ratio. Remove windage plates from driven clutch. If
possible, move to better snow conditions and reduce RPM. Avoid
riding in very high ambient temperatures.

Ice and snow piled up between track and tunnel overnight or after
stopping for a long period of time (enough to re-freeze the snow).

Break loose snow and ice under tunnel. Allow longer than normal
warmup. Allow belt to warm sufficiently and increase grip ability on
clutch sheaves. Use fast, effective throttle when engaging clutch.

Poor running engine

(Bog, Miss, Backfire, etc.)

Maintain good state of tune including throttle and choke synchro-
nization. Check for fouled spark plug(s). Check for foreign material
in carbs. Make sure no water or ice in fuel tank, lines, or carbure-
tors.

Loading machine on trailer

Use caution when loading machine. Carbide skags may gouge into
trailer and prevent drive train from spinning freely. Use enough
speed to drive completely onto trailer. If machine cannot be driven
completely onto trailer, it may need to be pulled or pushed to avoid
belt wear / burning.

Clutch malfunction

Check for correct clutch components.

Slow, easy belt engagement -- easing on the throttle

Use fast, effective throttle to engage the clutch.

Projected Belt

Width

CLUTCHING

4.38

Belt Deflection

Too much belt deflection - If the belt is too long or the
center distance too short, the initial starting ratio will be
too high, resulting in performance loss. This is due to the
belt rising too high in the drive clutch sheaves upon en-
gagement.

Not enough belt deflection (belt too tight) - If the drive
belt is too short or the center distance too long, the ratio
will again be incorrect. In addition, the machine may
creep when the engine idles, causing damage to the in-
ternal face of the drive belt.

Belt too high on initial engagement

CLUTCHING

4.39

Measuring Belt Deflection

IMPORTANT NOTE: Do not apply excessive pressure to force belt into driven sheaves. This will result in an
improper measurement. If belt deflection cannot be adjusted within specification using methods below, inspect
center distance and compare to specifications on page 5.30.

Measure belt deflection with both clutches at rest and
in their full neutral position.

Place a straight edge on the belt and apply downward
pressure while measuring at the point shown.

Adjusting Belt Deflection

Belt deflection can be adjusted without removing the clutch
from the jackshaft.

Pull belt into driven clutch to slightly open sheaves.

Loosen three bolts on adjustment cam.

Turn cam counterclockwise to reduce distance
between sheaves. Do not rotate past #1 position.

Torque bolts to specification.

Production washer is usually .075

〉

thick with other .020 or .030 washers

as required. May use optional, thinner (.048

〉

) washer PN 7555899 if re-

quired to obtain proper sheave width. Either the .075

〉

or .048

〉

washer

must be installed in this location to provide support for the adjustment
pins.

1 1/4

〉

(3.2 cm)

Straight Edge

Belt Deflection -

1 1/4

〉

(3.2 cm)

Used to adjust
belt tension. One must
always be installed.

Optional Thin Adjustment Washer (P-85)

.048

〉

- PN 7555899

Content .. 50 51 52 53 ..