Snowmobile Polaris (2006 year). Manual - part 51

10.4

FRONT SUSPENSION/STEERING

42.5 EDGE

Apply Polaris All Seas

on Grease to all 

zerks

10.5

FRONT SUSPENSION/STEERING

WIDETRAK

Apply Polaris 

All Season 

Grease 

to all zerks

10.6

FRONT SUSPENSION/STEERING

FRONT SUSPENSION ADJUSTMENT PROCEDURES

SET UP AND ADJUSTMENTS

Spring preload is one of the adjustment options which affects ride. Preload is the amount of pressure at which the spring is held. 
The longer the installed length of the spring, the less the amount of pre-load; the shorter the installed length of the spring, the 
more the amount of pre-load. An increase in IFS shock spring pre-load will result in an increase in ski pressure.

To adjust front spring preload on threaded adjust models, grasp the spring and turn in a clockwise direction (as viewed from the 
bottom of the shock) to increase the preload. Turn in a counterclockwise direction to decrease preload.

In the adjacent illustration, high preload and low preload positions are depicted.

When adjusting, be sure springs on both the left and right sides of the machine are at the same adjustment.

For the best ride the spring preload should be as low as possible. Set the preload to use the full travel of the ski shock with 
occasional light bottoming.

For the best ride the spring preload should be as low as possible. Set the preload to use the full travel of the ski shock with 
occasional light bottoming. To determine if your machine is using full travel, push the shock jounce bumper down as far as it will 
go on the shock rod and test ride the machine.

The bumper will move up on the rod in direct relation to the amount of travel. For example, if the shock travel is full, the bumper 
will be seated at the top of the shock.

Remove the existing spring and install the next highest rate spring, or Reduce the preload on the existing spring and change the 
shock valving to obtain the desired effect.

NOTE:  Shock valving can only be adjusted or changed on models that can be serviced.

CAUTION

If the plastic nut is unscrewed from the threaded body 

the nut will break. Always leave one thread showing 

above the plastic nut or the spring coils will stack, re-

sulting in damage.

10.7

FRONT SUSPENSION/STEERING

IFS SHOCK SPRINGS

Table 10-1: IFS Shock Springs

 Part 

Number 

 Total # of 

Coils 

 Rate #/in) 

 Free 

Length 

 Wire Via. 

I.D."

 O.D.” 

 Tabbed? 

7041261

13

105

10.25

0.312

1.84

2.6

NO

7041396

 13.35 

50

 11.88” 

.283” 

 1.89” 

 2.82 

 Yes 

7041398

 12.72 

75

 11.88” 

.312” 

 1.89” 

 2.88 

 Yes 

7041405

 13.40 

65

 11.88”  

 .306”  

 1.89”  

 2.82  

 Yes  

7041489

 14.70  

 74/120  

 11.30”  

 .312”  

 1.89”  

 2.75  

 Yes  

7041491

13

185

 13.50”  

 .438”  

 1.90”  

 3.60  

 Yes  

7041520

 10.60  

90

 10.50”  

 .283”  

 1.89”  

 2.57  

 No  

7041528

 17.57  

 74/160 var  

 11.30”  

 .306”  

 1.89”  

 2.53  

 Yes  

7041529

 19.39  

 50/140 var  

 11.30”  

 .283”  

 1.89”  

 2.50  

 Yes  

7041530

 14.42  

 70/105 var  

 10.50”  

 .283”  

 1.89”  

 2.50  

 Yes  

7041549

 9.17  

140

 10.75”  

 .331”  

 1.89”  

 2.75  

 Yes  

7041550

 8.29  

120

 10.80”  

 .306”  

 1.89”  

 2.75  

 Yes  

7041551

 9.55  

100

 10.75”  

 .306”  

 1.89”  

 2.75  

 Yes  

7041552

 9.09  

80

 10.75”  

 .283”  

 1.89”  

 2.75  

 Yes  

7041553

 11.46  

60

 11.33”  

 .283”  

 1.89”  

 2.75  

 Yes  

7041554

 9.09  

80

 10.75”  

 .283”  

 1.89”  

 2.75  

 Yes  

7041571

 10.40  

70

 10.50”  

 .263”  

 1.89”  

 2.53  

 No  

7041573

 9.28  

160

 10”  

 .331”  

 1.89”  

 2.91  

 Yes  

7041574

 10.32  

140

 10.25”  

 .331”  

 1.89”  

 2.91  

 Yes  

7041575

 10.36  

120

 11.42”  

 .331”  

 1.89”  

 2.87  

 Yes  

7041576

 9.55  

100

 10.80”  

 .306”  

 1.89”  

 2.86  

 Yes  

7041591

 12.79  

80

 12.25”  

 .306”  

 1.89”  

 2.75  

 Yes  

7041598

 9.71  

105

 9.33”  

 .312”  

 1.89”  

 2.894  

 Yes  

7041613

 14.01  

75

 11.88”  

 .295”  

 1.89”  

 2.62  

 Yes  

7041668

 6.94  

70

 4”  

 .219”  

 1.89”  

 2.34  

 No  

7041669

 6.27  

80

 4”  

 .218”  

 1.89”  

 2.33  

 No  

7041670

 6.28  

90

 4”  

 .225”  

 1.89”  

 2.35  

 No  

7041671

 11.71  

160

 9”  

 .331”  

 1.89”  

 2.56  

 No  

7041672

 10.63  

180

 9”  

 .331”  

 1.89”  

 2.56  

 No  

7041673

 12.72  

200

 9”  

 .362”  

 1.89”  

 2.62  

 No  

7041674

 12.72  

220

 9”  

 .362”  

 1.89”  

 2.62  

 No  

7041677

 10.43  

140

 9”  

 .306”  

 1.89”  

 2.52  

 No  

7041678

 8.65  

100

 7”  

 .262”  

 1.89”  

 2.43  

 No  

7041683

 12.12  

80

 11.88”  

 .312”  

 1.89”  

 2.87  

 Yes  

7041698

 5.84  

100

 4”  

 .225”  

 1.89”  

 2.35  

 No  

7041699

 5.75  

120

 4”  

 .235”  

 1.89”  

 2.37  

 No