2005 Polaris Sportsman 400/500 Service Manual, Page 199Get this manual
FINAL DRIVE 10Remove the spacer washer (D), armature plate (E), and rubber Oring from the output coverOring D
11Inspect the armature plate (E) for consistent wear patternUneven wear of the armature plate (E) indicates warped plate, which may cause intermittent operationNOTE: See "FRONT GEARCASE DIAGNOSIS" later in this chapter for more detailsE