2006-2012 Honda TRX90 TRX90EX/X Service Manual, Page 235Get this manual
REAR WHEELBRAKESUSPENSION Disconnect the rear brake breather hoseRemove the bolts, washer, adjuster and bearing holdernuts, drive chain BREATHER HOSE
Remove the right and left bearing holder dust seals
INSPECTION
Set the axle in V-b locks and measure the axle runout with dial indicatorActual runout is 12 the tota indicator readingSERVICE LIM IT: 3.0 mm (0.12 in)