2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 227Get this manual
CLUTCHING Drive Clutch Spring Inspection CAUTION Never shim drive clutch spring to increase its compression rateThis may
excessive wear Bolt Shift Weight Inspection 1Remove shift weight bolts and weightsInspect the contact surface of the weightThe
surface should be smooth and free of dents or gall marksInspect the weight pivot bore and bolts for wear or gallingIf weights
or bolts are worn or broken, replace in sets of three with new bolts and nutsInspect for excessive wear Inspect for excessive
wear WARNING The clutch assembly is precisely balanced unitNever replace parts with used parts from another clutch assembly!
NOTE: damaged shift weight is usually caused by damaged or stuck roller in the spider assemblySee "Roller, Pin and Thrust
Washer Inspection" Drive Clutch Spring Specifications 2012 Sportsman 400 Color Free Length BlueGrey 2.55" (64.77 mm) Drive