1999-2004 Honda TRX400EX FourTrax Service Manual, Page 148Get this manual
CRANKCASETRANSMISSIONCRANKSHAm SHIFT FORK
Check the shift fork guide pins for abnormal wear or damageMeasure the shift fork 1.D
SERVICE LIMIT 13.05 mm (0.514 in)
Measure the shift fork claw thickness
SERVICE LIMIT 5.5 (0.22 in)
SHIFT FORK SHAFT
Check the shift fork shaft for damage or bending Measure the shift fork shaft O.D
SERVICE LIMIT 12.90 mm (0.508 in)
GEARSHIFT SPINDLE