2007-2009 Kawasaki KFX50 service manual, Page 194Get this manual
13REAR WHEELSWING ARMHYDRAULIC BRAKE INSPECTION Roll the axle on flat surface to inspect the pivot shaftReplace it if bendsDo not attempt to straighten bent axle
Inspect the swing armReplace it if crack, bend or damageInspect the thrust cover, chain guide, collar and bushReplace them if wear or damage