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CLUTCHING
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9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
5. Inspect surface of shaft for pitting, grooves, or
damage. Measure the outside diameter and compare
to specifications. Replace the drive clutch assembly
if shaft is worn or damaged.
6. Visually inspect PTFE thrust washer for damage.
Measure the thickness and compare to specification.
Replace if worn or damaged.
Moveable Sheave Bushing Inspection
Inspect the Teflon coating (arrow) on the moveable
sheave bushing. Inspect both sheaves for signs of wear,
grooving or cracking. De-glaze sheave surfaces with a 3M
Scotch-Brite Pad if needed.
Shaft Diameter:
Standard: 1.3745 - 1.375
Service Limit: 1.3730”
PTFE Washer Thickness
Standard: .030” (.76mm)
Service Limit: .025” (.64mm)
Moveable Sheave Bushing Inspection:
Replace the cover bushing if more brass
than Teflon is visible on the bushing.
Refer to bushing replacement
in this chapter.
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