2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 490Get this manual
REAR DRIVING MECHANISM
FINAL DRIVE INSPECTION
PROPELLER SHAFT
For boot Check the splines fo we ar or damag e
rE'(.llacomenr (oage 9-271
If damagedcheck the nive rsal [ornt and output
shaft also Check the seat rubber for fat igue damageCheck the bo ot for cuts or dam age
SEAL RUBBER