1987 Honda Fourtrax TRX 250X Service Manual, Page 127Get this manual
CRANKCASEITRANSMISSIONfCRANKSHAFT Check the shift forks and shaft for wear or damageMeasure the I.Dof the shift forksSERVICE LIMIT: 13.04 mm 10.513 inMeasure the shift fork claw thickness SERVICE LIMIT: .50 mm 10117 Inl
Measure the .0 of the shift fork shaftSERVICE LIMIT12.96 mm (0.5 10 Inl (2) SH IFT FORK SHAFT
Remove the two bolts and disassemble the shift drum