2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 286Get this manual
FINAL DRIVE 5Install the eccentric cam assembly (1)8Install new seal (1) in the outer cover plate assemblyInstall new o-ring on the backlash pad (2) stem 2
6Install the splined armature plate (2)NOTE: Ring gear backlash (2) is set at the factoryNo adjustment is required, unless the front cover is replaced or the back lash pad screw is removed2 9Install the roll cage and rollers into the ring gearInsert the rollers as the roll cage is installed