2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 276Get this manual
CRANKCASECRANKSHAFTBALANCER INSPECTION Set the cranks haft in stand or v-blocks end mea su re the ru nout usi ng dia indicatorSERV ICE LIMIT: .15 mm 10.059 in)
M easur the side clearance between he connecting rod big end and cra nk weight ith teeter gauyeSERVICE LIM IT: 0.8 mm (0.03 in )