2008 Arctic Cat ATVs factory service and repair manual, Page 101Get this manual
5 Simultaneously, install the driveshaft and countershaft assemblies 8Engage the four forks to the gear shift cam; then install the reverse shift cam and spacer6Install the reverse idle shaft with snap ring making sure the oil hole in the shaft is facing downward; then install washer, bushing, reverse idle gear, and washerINOTE: The reverse idle gear is directionalCare must be taken that it is installed correctly