2007-2009 Kawasaki KFX50 service manual, Page 192Get this manual
13REAR WHEELSWING ARMHYDRAULIC BRAKE Check the swing arm side play by moving it from side to sideIf side play noticeable, check the inner collar, bushing and thrust cover
Check the swing arm vertical movement by moving it up and downIf vertical movement is tight, binding or rough, to check the inner collar, bushing and thrust cover