2005-2009 Honda TRX400EX/TRX400X Service Manual, Page 242Get this manual

2005-2009 Honda TRX400EX/TRX400X Service Manual, Page 242

REAR WHEELSUSPENSION rear axle (by driving it from the right side with rubber mallet)
O- ring four nuts, bolts and driven sprocket

SPROCKET

dust sea ls snap ring caliper stay stopper bushing O-rings (from the groove!