2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 333Get this manual
CRANKCASETRANSMISSIONCRANKSHAFTBALANCER (After '05) Check the shift fork shafts for abnormal wear or damageMeasure each shift fork shaft O.DSERVICE LIMITS: Left and right: 11.950 mm (0.4700 in) Center: 10.969 mm (0.4319 in)
Check the shift forks for abnormal wear or damageMeasure the I.Dof each shift forkSERVICE LIMITS: Left: 12.07 mm (0.475 in) Right: 12.04 mm (0.474 in) Center: 11.04 mm (0.435 in) Measure claw thickness of each shift forkSERVICE LIMIT: 4.8 mm (0.19 in)