2006 Honda TRX680 Rincon Factory Service Manual, Page 263Get this manual
SUB-TRANSMISSIONGEARSHIFT LINKAGE REVERSE IDLE GEAR
Check the gear teeth for abnormal wear or damageCheck the splines of the gears and collar for abnormal wear or damage
SHAFT Check the gear shaft and collar for abnormal wear or damageMeasure each end of the gear collar I.DSERVICE LIMIT: 13.05 mm (0.514 in) Measure the shaft O.DSERVICE LIMIT: 12.93 mm (0.509 in) Calculate the collar-to-shaft clearanceSERVICE LIMIT: 0.10 mm (0.004 in)
SHIFT FORK AND SHAFT Check shift fork guide pin for abnormal wear or damageMeasure each shift fork claw thicknessSERVICE LIMIT: 4.5 mm (0.18 in) Measure the shift fork I.DSERVICE LIMIT: 11.04 mm (0.435 in) Measure the shift fork shaft O.DSERVICE LIMIT: 10.96 mm (0.431 in)