2006 Arctic Cat ATVs factory service and repair manual, Page 256Get this manual
9Remove the driven gear from the crank balancer assembly (A)Account for key B AT THIS POINT
ITo service crankshaft assembly, see Servicing Center Crankcase Components sub-sectionDo not remove the remaining output shaft assembly unless absolutely necessaryIf the shaft is removed, the shaft nut must be replaced with new Ione and the shaft must be re-shimmedI
10Remove the crank balancer assembly (A)
12To remove the output shaft and gear, remove the nut, slide the gear off the shaft (account for shim or shims), and drive the shaft out with plastic mallet (account for shim or shims)