2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 263Get this manual
SUB-TRANSMISSIONGEARSHIFT LINKAGE RE VERSE IDLE GEAR
Check th gear teet fo ab no rm al ear damageCheck th splines 01 he gears and collar fo ab ne rma ear am age
Check he ge ar shaft and colla or abnorm al wea or damageMeasure each end of th gear collar I.DSERV ICE LIMIT: 13.05 mm (0.514 n)
Measure th sh aft .0SERV ICE LIMIT: 12 .93 mm (0.509 in l
Calcu late the colla r-to-shaft clea rance
SERVICE LIMIT: 0.10 mm 10.004 in)
SHIFT FORK AND SHAFT
Chec hift for uid in for abno rmal we ar or