1999-2002 TRX400EX Fourtrax Service Manual, Page 185Get this manual
REAR WHEELSUSPENSION Remove the wheels (page 13-3l, Removethe cotter pin and the hub nutRemovethe right wheel hub
COTTER PIN
Remove the stopper ring, outer and inner lock nuts from the axleRemovethe skid plate (page2-5), Removethe brake disclhub by sliding it outwardRemovethe O-ring from the inside of the disc hub