1999-2002 TRX400EX Fourtrax Service Manual, Page 148Get this manual
CRANKCASETRANSMISSIONCRANKSHAFT SHIFT FORK Check the shift fork guide pins for abnormal wear or damageMeasure the shift fork I.D SERVICE LIMIT 13.05 mm (0.514 in) Measure the shift fork claw thicknessSERVICE LIMIT 5.5mm (O.22in)
SHIFT FORK SHAFT Check the shift fork shaft for damage or bending Measurethe shift fork shaft 0.0SERVICE LI IT 12.90 mm (0.508 in)
GEARSHIFT SPINDLE Check the gearshift plate for wear or damageCheck the return spring and reset spring for fatigue or damage
ASSEMBLY