1986-1989 Honda TRX250 FourTrax 250R Service Manual, Page 99Get this manual
TRANSMISSIONCRANKSHAFT INSPECTION
Check that the shift forks are not bent, worn or damagedMeasure the I.D and shift pawl thickness
SERVICE LIMITS: Pawl thickness: 4.8 mm (0.19 in) I.D 12.09 mm (0.476 in) 11.09 mm (0.437 in)
Check that the shift fork shafts are not bent, worn, or damagedMeasure the .Dof the shafts
SERVICE LIMITS: Mainshaft 10.97 mm (0.432 in) Countershaft 11.97 mm (0.471 in)