6.12
CLUTCHING
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
Belt Deflection (Tension) (NON EBS ONLY)
Pinch the sheaves lightly together with clamp to prevent
the belt from being pushed into the driven sheave.
1. Place a straight edge on top of the belt between drive
and driven clutch.
2. Push down on drive belt until it is lightly tensioned.
3. Measure belt deflection as shown in the image above.
If belt deflection is out of specification, adjust by removing
or adding shims between the driven clutch sheaves.
• Remove shims to decrease belt deflection
• Add shims to increase belt deflection
Refer to “Driven Clutch Service” section.
At least one shim must remain between the inner and
outer sheave of the driven clutch. If proper belt deflection
cannot be obtained, measure drive belt width, length, and
center distance of drive and driven clutch, outlined in this
section; all have an effect on belt deflection.
CLUTCH CENTER DISTANCE
Setting Center-To-Center Distance
Clutch center distance is controlled by the correct
positioning of the engine and transmission mounting. The
10” Center Distance Tool (PN 2871710) should be used
for the following:
• After engine installation.
• After transmission installation.
• After engine or transmission mount replacement.
• If the vehicle exhibits drive clutch drag or hard
shifting while at idle speed, after clutch offset
adjustment has been performed.
Belt Deflection (Tension):
1 1/8” (2.9 cm) - 1 1/4” (3.2 cm)
Straight Edge
Deflection Measurement
See Spec Below
Center
Distance
10.05 in. / 255 mm
2871710
Primary
Shaft
Secondary
Shaft
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