Helix Angles And Effects (Polaris Clutch) - Polaris 2003 Pro X Service Manual

Helix Angles and Effects (Polaris Clutch)

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
34 5130896
34M* 5130751
36 5130895
36M* 5130717
38 5130723
40 5130724
42 5130725
44 5130726
40-36* 5130898
R1* 5131287
R2* 5131288
R3* 5131289
R4* 5131290
R5* 5131291
R6* 5131292
R7* 5131293
R8* 5131294
R9* 5131295
R10* 5131296
R11* 5131297
R32* 5131623
R12* 5131298
R49 5133023
T-1* 5131013
36.5 5130383
40-38-36 5131161
38-36 5131162
38-36-34 5131163
34 5131164
34 5131164
* 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.
Degrees System Type
34 P85
34 P85
36 P85
36 P85
38 P85
40 P85
42 P85
44 P85
40-36 P85
40-32 P85
42-32 P85
45-32 P85
50-32 P85
40-34 P85
42-34 P85
45-34 P85
50-34 P85
40-36 P85
42-36 P85
45-36 P85
50-34 P85
50-36 P85
52--34 P85
42-36-34 P85
36.5 P90
40-38-36 P90
38-36 P90
38-36-34 P90
34 P90
34 P90
CLUTCHING
NOTE: Always Install Snap Ring with
Chamfer Towards Helix (sharp edge out-
ward)
4.11