2005-2009 Honda TRX400EX/TRX400X Service Manual, Page 193Get this manual
CRANKCASETRANSMISSIONCRANKSHAFT SHIFT DRUM
Inspect the shift drum journals for scoring scratches or evidence of insufficient lubricationCheck the guide grooves for abnormal wear or dam age
SHIFT FORKSHAFT
Check the shift fork shaft fo damage or bi nding Measure each shift fork shaft .0 SERVICE LIMIT: 12.90 mm (0.508 in)
Check the shift forks for abnormal wear or damageMeasure the 1.0of each shift forkSERVICE UMrT: 13.04 mm (0.S13 in)