10.FINAL REDUCTION/ TRANSMISSION SYSTEM Mongoose/KXR 90/50 Primary Drive Axle PRIMARY DRIVE AXLE REMOVAL Remove the clutch/friven pulley. (Refer to chapter 9) Remove the primary drive axle. Inspect the final gear teeth. Blue discoloration/pitting/wear Replace. Inspect the countershaft gear teeth. Blue discoloration/pitting/wear Replace. 10-4