2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 229Get this manual
CLUTCHING NOTE: Rubber side of the button is positioned toward the solid roller pinIt is recommended to switch all buttons
replace all buttons and inspect surface of towersSee "Spider Removal" procedure 2Remove shift weight bolts and weightsInspect
as shownThe contact surface of the weight should be smooth and free of dents or gall marksInspect the weight pivot bore and
pivot bolts for wear or gallingIf weights or bolts are worn or broken, replace in sets of three with new bolts = In mmButton
to Tower Clearance: 000-.001" 2Inspect sheave surfacesReplace the entire clutch if worn, damaged or cracked NOTE: damaged
shift weight is usually caused by damaged or stuck roller in the spider assemblySee "Roller, Pin and Thrust Washer Inspection"