6.34
CLUTCHING
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
Clutch Assembly
1. Install moveable sheave with spacer washers.
Important: At least one spacer washer must be
installed. Teflon™ bushings are self-lubricating. Do
not apply oil or grease to the bushings.
2. Install spring, inserting spring tab into hole #2 in
moveable sheave.
3. Insert spring tab into proper hole in helix. See “Clutch
Chart” of the specifications page in Chapter 1.
The driven clutch, helix/moveable assembly has several
different spring locations which affect clutch shifting and
RPMs. The greatest amount of spring tension will raise
engine RPMs during clutch upshift and allow quicker
backshift or downshift when pulling or negotiating a hill, for
example. The least amount of tension will create a slower
downshift and a harder upshift.
4. Line up boss spline and push helix down until it
engages the splines 1/2" to 3/4".
5. While holding downward pressure on helix, wind
moveable sheave counterclockwise approximately 1/
3 turn (120°).
6. Push helix into place and install snap ring.
Example: Helix Sheave Tension
2 - 1 Heavy
Spring/ 2 - 2
Position 1 - 1
2 - 3
1 - 2
1 - 3 Soft
Moveable Spring
Driven Clutch
Driven Spring
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