2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 494Get this manual
REAR DRIVING MECHANISM GEAR TOOTH CONTACT PATTERN CHECK Clean the mating su rf aces of th gear case and
out of If,e case and
cove rApply thin co al of Prus sian Blue to the pinion nat eet fo tooth co ntact pattern ch eckfnstautbe ring gear shims nto th ring ge ar
fliN GEAR
Apply Pru ssian Blue
Install the ring gear with th shims int the ear
Align Ihe bo lt ho les and install th case coverIt 15 ,mpotTiJr1I lO Insta ll Ih cover bo lt and ighten th em in seve ral rum th m,on steps until the cover evenly to uc hes the gear casewholtl f,ghfflnmg the Then, while rotat ing Ihe pinion gear, ti gh ten the bolts I the rong bol ts to the speci fied to rq ue in criss cross patt ern gear shims IS too in several stepsItld11111 gHllrs ll {x:ia lrer only ,gh l