2005-2009 Honda TRX400EX/TRX400X Service Manual, Page 241Get this manual
REAR WHEELSUSPENSION The lock nuts Ilas Loosen the axle inner lock nut by urn in it counterleft-hand threads_ clockwi se while holding the outer lock nut, using the
specia tools
TOOLSLock nut wrench, 56 mm
Lock nut wrench45 .5 mm
07916-HA20000 or 07916-HA2010A (U.S.Aonly) 07916- 1870101 or commerciallyavailable equivalent
Loosen the axle outer lock nut ntil the stopper ring can be remo ved wh il supporting the disc flange, using the special tool