2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 277Get this manual
CRANKCASE CRANKSHAFTBALANCER CRANKSHAFT AND BALANCER INSTALLATION A pply eng ine il to ne rear rankshaft beari ng Drive th cranks haft bear ing into he rear cran kcase wi he marki ng side faci ng up DRIVER
TOOLS; Dri ver
07749-0010000
Att achment78 Pilot 40 mm
07GADS D40101
07746-0040900
For othe beari ng rep laceme nt in the cran kcase ha lvessee page 13 10
Engag he crankshaft and balancer by aligning he index li nes the sides of th balan cer rive and riven ears as sho n, and inst all them togeth er int th rea crankcase