2011 Arctic Cat 400 TRV ATV Service Manual, Page 61Get this manual
4Place the reverse driven bushing (13) onto the shaft; then install the bearing (14), gear (15), and splined washer (16)Secure with snap-ring FI670
2Install the highlow shift dog (6) on the countershaft and secure with snap-ring (7); then install the splined washer (8)