1998-2004 Honda Foreman 450 factory service manual, Page 311Get this manual
FRONT DRIVING MECHANISM Remove the dial indicatorTurn the ring gear and measure the backlash Repeat this procedure once moreCompare the difference of the three measurementsDIFFERENCE OF MEASUREMENT SERVICE LIMIT: 0.25 mm (0.010 in) If the difference in measurements exceeds the limit it indicates that either he bearing is not installed squarely, or the case is deformedInspect each bearing and case[f backlash is too small, replace the ring gear left
side spacer with thicker oneBacklash is changed by about 0.06 mm (0 .002 n) when thickness of the spacer is changed by 0.10 mm (0.004 in)RING GEAR SPACERS: Twenty-three spacers (from to W), are available in thickness intervals of 0.05 mm Standard: 1.00 mm (0.039 in) Thinnest: 0.50 mm (0.020 in) Thickest: 1.60 mm (0.063 in) Replace the right side spacer with spacer that is the opposite thickness of the new left side spacerFor example, if the left spacer was replaced with 0.10 mm (0.004 n) thicker spacer, replace the right spacer with one that is 0.10 mm (0 .004 in) thinner