Snowmobile Polaris Two Stroke (2007 year). Manual - part 57

9.11

REAR SUSPENSION

9

7041856 LH

7041857 RH

.359

16.5

4.5

1.79-1.85

7.71

85

3.46

7042079 LH

7042080 RH

.375

16.5

4.5

1.98

8.64

47

3.94

7042101 LH

7042102 RH

.347

15.625

3.75

1.69-1.71

6.71

77

3.45

7042139 LH

7042140 RH

.375

17.7

4

2.35

6.71

77

3.1

7042157 LH

7042158 RH

.359

15.625

3.75

1.82-1.84

6.71

77

3.46

7041631 LH

7041632 RH

.375

16.5

4.5

1.86-1.92

7.71

77

3.74

7041942 LH

7041943 RH

.375

16.5

4.5

2.225

6.71

77

3.52

7041895 LH

7041896 RH

.375

16.5

4.5

2.225

6.71

90

3.52

7042240 LH

7042241 RH

.405

17.7

4

2.35

6.71

77

3.25

7041655 LH

7041656 RH

.405

16.5

4.5

1.86-1.92

7.71

77

4

7041897 LH

7041898 RH

.405

16.5

4.5

2.225

6.75

90

3.55

7041940 LH

7041941 RH

.405

16.5

4.5

2.232

6.71

77

3.55

7043070 LH

7043071 RH

.347

14.75

4.5

1.80-1.84

6.72

80

3.20

7042157 LH

7042158 RH

.359

15.625

3.75

1.82-1.84

6.71

77

3.46

7042242 LH

7042243 RH

.359

17.70

3.25

2.35

6.71

77

3.1

7042253 LH

7042254 RH

.359

14.63

4.5

1.88-1.90

6.75

90

3.00

7042282 LH

7042283 RH

.421

17.70

4

2.45

6.71

71

3.4

7042321 LH

7042322 RH

.347

13.63

4.5

2.16-2.20

5.72

80

2.54

7043042 LH

7043043 RH

.347

14.75

4.5

1.80-1.82

6.72

80

3.2

7043079 LH

7043080 RH

.359

14.75

4.5

1.80-1.84

6.72

80

3.1

7043124 LH

7043125 RH

.405

17.70

4

2.35

6.71

77

3.44

7043128 LH

7043129 RH

.405

14.75

4.5

2.5

6.72

80

3.40

7043130 RH

7043131 LH

.359

14.75

4.5

2.5

5.72

80

3.75

Square Torsion Springs (Continued)

SPRING PN (

LAST

 3 

DIGITS

 (A)

WIRE 

DIAMETER 

INCHES

 (B)

LEG 1 

INCHES

 

(C)

LEG 2 

INCHES

 

(D)

COIL ID 

INCHES

 

(E)

# OF COILS 

INCHES

 (F)

DEGREES 

OPEN ANGLE 

(G)

SPRING 

WIDTH 

INCHES

 

(H)

9.12

REAR SUSPENSION

Installing Heaviest Springs On A IQ 121" Suspension

Please reference the following information when installing heavy torsion springs (7043128/7043129) on sleds equipped with IQ 121"
suspensions. The issue that arises when installing the heavy spring is that the coil stack of the torsion spring is tall enough to interfere
with the suspension arm clamp nut. To work around this issue you will need to order two (one for each side) of the Parts below. You
will also need to relocate the two washers that are next to the clamp nut to the outside of the link arm.

Original Configuration

9.13

REAR SUSPENSION

9

Widetrak Torsion Spring Adjustments

Rear spring adjustment is primarily a control for riding comfort.
To check for the recommended settings:

1.

Lift the rear of the machine to relieve the rear springs.

2.

Slowly lower the machine and measure the distance
between the ground and the running board.

3.

Without letting the suspension settle, the rider should
carefully mount the snowmobile.

4.

Measure the distance between the ground and the same spot
on the running board. The difference between the two
readings should be approximately 1 1/2” (3.8 cm). If the
difference is greater than 1 1/2” the rear spring should be
adjusted equally on both sides until the desired 1 1/2” drop
is obtained.

Compensating adjustments for heavy or light drivers or cargo
loads can be made by adjusting the rear spring eye bolt (A)
length. Adjust spring tension so there is equal tension on the
long leg of each spring.

NOTE:   Rear spring settings will affect ski-to-ground
pressure. If ski pressure is too light it may be
desirable to tighten the rear springs for an increase
in ski-to-ground pressure.

A

9.14

REAR SUSPENSION

M-10 SUSPENSION

M-10 Overview

The FAST M-10 rear suspension has been designed and set up to deliver a soft ride under average riding conditions. Rider weight,
riding styles, trail conditions, and vehicle speed each affect suspension action.

The suspension can be adjusted to suit rider preference and deliver excellent performance for a given set of conditions. It should be
noted, however, that suspension adjustments involve a compromise or trade off. A machine set up to perform well in the moguls
would not suit the preference of a groomed trail rider.

M-10 RTS Adjustments

• Full Range Adjuster (FRA)

• Center Retainer

M-10 SUSPENSION

Remote reservoir detail

Full Range Adjuster (FRA)

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