1984 Official Honda TRX200 Shop Manual, Page 219Get this manual
REAR WHEELFINAL DRIVE
Replace the pinion spacer with thinner one if the contacts are too low, to the flank sideThe patterns will shaft about 1.5-2.0 mm (0.06-0.08 in) when the thickness of the spacer is changed by 0.10 mm (0.004 in)PINION SPACER:
1.32 mm (0.052 1.38 mm (0.054 in) 1.44 mm (0.057 in)
1.50 1.56 1.62 1.68 mm mm mm mm (0.059 in) Stanard (0.061 in) (0.064 in) (0.066 in)