2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 162Get this manual
4Remove the 4th driven gear from the drive shaftNote the four small dogs facing toward the 3rd driven gear for assembling purposes 5Remove the 3rd driven circlip; then remove the 3rd driven lock washer (right side) from the drive shaft
7Remove the 3rd driven bushing from the drive shaftNote the location of the oil feed hole in the bushing and the matching oil supply hole in the driveshaft for assembling purposes