1985-1987 Honda TRX 250 Fourtrax 250 Service Manual, Page 135Get this manual
CRANKCASECRANKSHAFTTRANSMISSION Replace the drive gear adjust ment shim with thicker one if
the contact is too lowThe pattern will shift about 1.0 mm (0.04 in) when the thick ness of the shim is changed bV 10 mm (0.04 in)OUTPUT DRIVE GEAR ADJUSTMENT SHIM :
A: 0.90 mm 10.035 in)
B: C: 0: E: F: G: .9 1.00 .0 1.10 1.1 .20
mm mm mm mm mm
(0 .037 10.0 (0 .041 .043 (0.045 mm (0.041