1997-2004 Honda Fourtrax Recon TRX250TE/TM Service Manual, Page 281Get this manual
REAR DRIVING MECHANISM If the patterns are not correct, remove and replace the pinion spacer with one of an alternate thicknessReplace the pinion spacer wi th thicker one if the contacts are too high, toward the faceReplace the pinion spacer with thinner one if the contacts are 100 low, the flank sideThe pattern will shift about 0.51.0 mm (0.02 0.04 in) when the thickness of the spacer is changed by 010 mm (0.004 in)
TOO HIGH:
PINION SPACERS: A:l .64 mm (0.064 in)
8: 1.70 mm c:1 .76 mm D:l .82 mm E: 1.88 mm F: 1.94 mm G:2.00 mm H:2.06 mm I: 2.12 mm218 mm (0.067 (0.069 (0.072 (0.074 (0.076 (0.079 (0.081 in) in) in)