Snowmobile Polaris High Performance (2001 year). Manual - part 46
CLUTCHING
4.12
Helix Angles and Effects
The driven clutch helix was selected for overall performance in relation to the other driven system components. In
fine tuning situations requiring a slight adjustment of engine operating RPM or improved backshift, we
recommend trying a helix change before changing other components.
The helix spring should always be adjusted within its limits before a helix change is performed. The normal rate of
change between helix angle steps is 250 RPM under full throttle. This is approximately the same result as in going
from the No. 1 to No. 4 spring position. NOTE: Increasing spring tension increases engine RPM. RPM changes
may not be evident if other drive or driven clutch components are substandard.
On most models the production helix spring hole location is No. 2. Tension the spring 1/3 turn. Install helix key,
thrust washer and snap ring.
Polaris has several helix angles available for the driven clutch. Refer to the chart below for specific angle effects
and identification. See NOTE: below.
Description
PN
Degrees
System Type
34
5130896
34
P85
34M*
5130751
34
P85
36
5130895
36
P85
36M*
5130717
36
P85
38
5130723
38
P85
40
5130724
40
P85
42
5130725
42
P85
44
5130726
44
P85
40-36*
5130898
40-36
P85
R1*
5131287
40-32
P85
R2*
5131288
42-32
P85
R3*
5131289
45-32
P85
R4*
5131290
50-32
P85
R5*
5131291
40-34
P85
R6*
5131292
42-34
P85
R7*
5131293
45-34
P85
R8*
5131294
50-34
P85
R9*
5131295
40-36
P85
R10*
5131296
42-36
P85
R11*
5131297
45-36
P85
R32*
5131623
50-34
P85
R12*
5131298
50-36
P85
R49
5133023
52--34
P85
T-1*
5131013
42-36-34
P85
36.5
5130383
36.5
P90
40-38-36
5131161
40-38-36
P90
38-36
5131162
38-36
P90
38-36-34
5131163
38-36-34
P90
34
5131164
34
P90
34
5131164
34
P90
* NOTE: All R-Series, Mod(M), T1, and 40-36 helix ramps are cut 0.060
〉
deeper in the snap ring pocket.
These are made so the driven clutch can open far enough for full shift out with wide 1 7/16
〉
belts.
If these helix ramps are used with narrow belts, 2 additional .030
〉
/.8 mm (PN 7556804) washers (for a total of
three) must be installed under the snap ring to prevent the belt from touching the inner hub at full shift which can
cause belt failure.
Wide belt models use only the existing washer under the snap ring.
NOTE: Always Install Snap Ring with
Chamfer Towards Helix (sharp edge out-
ward)