2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 260Get this manual
8Remove the 3rd driven lock washer (right side) from the driveshaftNote the tabs facing toward the 5th driven gear for assembling purposes CC216D
9Remove the next 3rd driven lock washer (left side) by rotating it out of the grooveNote the groove closest to the 5th driven gear for assembling purposes
6Remove the 3rd driven gear from the driveshaft