2005 Polaris Sportsman 400/500 Service Manual, Page 181Get this manual
CLUTCHING 7Check for movement of the shaft in the stationary sheaveThe shaft should rotate freely until the stop plate makes contact with the sheave castingSome lateral movement is allowableThe amount of movement shall be limited to prevent the plate from raising out of the sheave pocket9Remove the snap ring (F)
10Remove the stop plate (G) and spacer washer (H)