2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 354Get this manual
DRIVETRAIN SYSTEM PRIMARY DRIVEN GEAR INSTA LLAT ION (1st Shift Clutchl
Bl ow hro ug the oil holes in the driven gear boss ith compressed air
Coa new O-rings with engine il and inst all them
into the boss groovesInstall the primary driven gear into the shift cl utc until is fully seat edInstall the 1s1shi ft dutch assembly {page 14-721
151 SHIFT CLUTCH INSTALLATION
Install the following:
Ml gear gu ide lapp ly eng ine il to he gear teeth) washer new O-rings (apply eng ine oi l)
Line up the ta bs th thr ee utc discs in th sh ift
dutch AJ,gn