1999-2002 TRX400EX Fourtrax Service Manual, Page 183Get this manual
REAR WHEELSUSPENSION TOOLS
Driver Attachment, 24 26 mm Attachment, 62 66 mm Attachment, 35 mm I.DPilot, 17mm Pilot, 40 mm Lock nut wrench, 56 Lock nut wrench, 45 mm Needle bearing remover Assembly collar 077 490010000 077 460010700 077 460010500 077 460030400 07746-0040400 077 460040900 07916- HA200000r only) 07916- 1870101 or equivalent commercially available in U.S.A07946KA50000 07965VM00100
TROUBLESHOOTING
Rear wheel wobbling Bent rim Worn or damaged rear axle bearings Faultyreartire Axle fastener not tightened properly Faultyswingarm pivot bearings Rearwheel turns hard Faulty rear axle bearings Bent rear axle Rear brake drag Drive chain too tight Soft suspension Weak shock absorber spring ncorrect suspension adjustment Oil leakage from damper unit Hard suspension ncorrect suspension adjustment Damaged rear suspension pivot bearings Bent damper rod Rear suspension noise Faulty rear shock absorber Loose rear suspension fasteners Worn rear suspension pivot bearings