2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 250Get this manual
CLUTCHING 12Inspect the bearing for wearSpin the bearing, if the bearing does not spin smoothly, replace itTo replace the bearing, remove the snap ring from the end of the shaft and press the bearing off the shaft14Inspect the clutch sheaves for excessive wear or damage
Inspect Sheave Surface