Table of Contents
Advertisement
P
T
#
ART
OTAL
OF
N
C
UMBER
OILS
7041820
5.98
7041821
5.91
7041826
9.19
7041826
8.85
7041828
9.61
7041829
8.92
7041927
16.15
7041950
13.80
7042052
11.7
7042074
11.625
7042187
13.76
7042195
14
7042263
8.67
7042314
10.64
7042315
10.89
SPRINGS
Two types of springs are employed in Polaris suspensions, coil springs and torsion springs. Following is some of the terminology
used when referring to coil springs.
• Free length - the length of a coil spring with no load applied to the spring
• Installed length - the length of the spring between the spring retainers. If the installed length of the spring is less than the
free length, it will be pre-loaded.
• Spring rate - the amount of force required to compress a coil spring one inch. For example, if 150 pounds of force are
required to compress a spring 1 inch, the spring rate would be 150 #/in.
• Straight rate spring - the spring requires the same amount of force to compress the last one inch of travel as the first one
inch of travel. For example, if a 150 #/in. spring requires 150 pounds of force to compress it one inch, 300 pounds of force
would compress it two inches, 450 pounds of force would compress it three inches, etc.
• Progressively wound spring - the rate of the spring increases as it is compressed. For example, a 100/200 #/in. rate spring
requires 100 pounds of force to compress the first one inch, but requires 200 additional pounds to compress the last one
inch.
When a bump is encountered by the suspension, the force of the bump compresses the spring. If the force were 450 pounds, a 100
#/in. spring would compress 4.5 inches. A 150 #/in. spring would only compress 3 inches. If the suspension had 4 inches of spring
travel the 100 #/in. spring would bottom out, while the 150 #/in. spring would have one inch of travel remaining.
COMPRESSION DAMPING ADJUSTABLE SHOCKS
Snowmobiles equipped with the Indy Select or Ryde FX shocks allow the driver to make adjustments to the compression valving
by turning the screw located near the base of the shock.
Locate the adjustment screw near the base of the shock.
By turning the screw clockwise (a small screwdriver or dime work well), the compression valving is increased, stiffening the ride.
To soften the ride, reduce the compression by turning the screw counter-clockwise. A great deal of ride performance is accomplished
with a mere 1/2 to 1 turns. There are approximately 3 full turns of adjustment available.
IFS Shock Springs
F
REE
R
#/
)
ATE
IN
L
ENGTH
140
4
160
4
160
7
180
7
200
7
220
7
68/160
13
68/160
11.57
110
12
90/180 Var
10.65
68/160
12.55
90/180 Var
13
80/110 Var
10.78
75
10.01
55
9.85
FRONT SUSPENSION & STEERING
W
V
.
I.D."
IRE
IA
.250
1.89
.262
1.89
.306
1.89
.312
1.89
.331
1.89
.331
1.89
.295
1.89
.331
1.89
0.343
1.87
0.343
1.89
0.343
1.89
0.362
1.89
0.331
1.89
0.281
1.89
0.262
1.89
O.D."
T
?
ABBED
2.43
No
2.49
No
2.54
No
2.54
No
2.59
No
2.59
No
2.54
Yes
3.125
Yes
3
NO
3.2
YES
3.18
YES
3.2
YES
3.25
YES
2.71
YES
2.66
YES
8.9
8
Advertisement
Chapters
Table of Contents
Troubleshooting
