2003-2006 Kawasaki KFX400 service manual, Page 262Get this manual
CHASSIS
DUST SEAL Inspect the dust seals for wear or damageIf any defect are founds, replace the dust seal with new one
AXLE BEARINGS Inspect the play of the wheel bearings by finger while they are in the axle housingRotate the inner race by finger to inspect for abnormal noise and smooth rotationReplace the bearing with new one, if there is anything unusual