2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 473Get this manual
FRONT DRIVING MECHANISM Coat new Oring with grease and in sta ll it int the
gear case cover grooveInstall the case cove ove the gea case
CASE COVE R
DIFFE RENTIAL ASSEMBLY
It IS ,mportant to Ap pl locking agent to th hreads of the two 10 mm
fum the plmon gear bollsw rlle IIg htenmg the Install th bo lts and tigh ten them in seve ral steps boilS If tne III'Y unt il th cove eve nly touch es he gear caseThen, gear shim '!Ii' roo hile rotat ing the pinio gear, tighten the bolts to mrck, the gears will th speci fied torq ue in 11 crissc ross patt ern in sev lad after onlv '19m ral stepsIghtenmg