2011 Arctic Cat 450XC Service Manual, Page 97Get this manual
Backlash NOTE: Always set backlash prior to any other shimming
1Install the existing shim or 0.051-0.055-inshim on the gear case side of the ring gear assembly
7Secure the pinion gear in bearing puller; then remove the pinion bearing using pressAccount for collar and bearing
2Install the ring gear with shim in the gear case; then while holding the pinion stationary, rock the ring gear forward and back to determine if any backlash existsIf no backlash exists, install thicker shim and recheck
NOTE: If gears are being replaced, use the existing shimsNOTE: If the gear case housing is being replaced, proceed to the following Shimming ProcedureShim Selection sub-section
Shimming ProcedureShim Selection
Shims pn