2005-2009 Kawasaki Brute Force 650/KVF 650 4x4 Service Manual, Page 288Get this manual
FINAL DRIVE 12-47 Front Final Gear Case
Mount dial gauge [A] so that the tip of the gauge is against the splined portion [8] of the pinion gear shaft To measure the backlash, move the pinion gear shaft back and forth [C] while holding the front axle steadyThe difference between the highest and the lowest gauge reading is the amount of backlashOMeasure backlash at three locations equally spaced on the splinesFront Final Bevel Gear Backlash Standard: 0.100.20 mm (0.0040.008 in (at pinion gear spline)
If the backlash is not within the limit, replace the pinion
gear shimsTo increase backlash, increase the thickness of the shim(s)To decrease backlashdecrease the thickness of the shim(s)OChange the thickness little at time Recheck the backlashand readjust as necessary
Tooth Contact Adjustment Clean any dirt and oil off the bevel gear teeth Apply checking compound to or teeth on the pinion gear