2006 Honda TRX680 Rincon Factory Service Manual, Page 261Get this manual
SUB-TRANSMISSIONGEARSHIFT LINKAGE
SUB-TRANSMISSION
DISASSEMBLY
Remove the rear crankcase cover (page 12-5)Remove the following: washer idle gear (25T) gear shaft and gear collar (inner and outer) washer idle gear (16T) SHAFTCOLLARWASHER
The output shaft can be removed at this time (page 12-10)
(OUTPUT SHAFT)
Remove the following: shift fork shaft shift fork countershaft assembly