1999-2004 Honda TRX400EX FourTrax Service Manual, Page 183Get this manual
REAR WHEELSUSPENSION
Driver Attachment, 24 26 mm Attachment, 62 66 mm Attachment, 35 mm I.DPilot, 17 mm Pilot, 40 mm Lock nut wrench, 56 mm Lock nut wrench, 45 mm Needle bearing remover Assembly collar
077490010000 077460010700 077460010500 077460030400 07746-0040400 077460040900 07916HA20000 or 07916- HA2010A (U.S.Aonly) 07916- 1870101 or equivalent commercially available in U.S.A07946KA50000 07965VMOOIOO
TROUBLESHOOTING
Rear wheel wobbling Bent rim Worn or damaged rear axle bearingsFaulty rear tire Axle fastener not tightened properlyFaulty swingarm pivot bearings