2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 305Get this manual
REAR DRIVING MECHANISM Install the bolts and lighten them in several steps until the cover evenly touches the gear caseThen, wtule IIghtenmg the while rotating the pinion gear, tighten the bolts to boilS If the "ng the specified orque in crisscross pattern in se gear shim IS roo eral stepsthle", the gears Will lock Bfrer only 19M TORQUE: 10 mm bolt: 49 N'm 15.0 kgfm 36 Ibf.ft) mm bolt: 25 Nm (2.5 kgfm, 18 Ibf.tt) tightening
1 IS Jmponam 0
turn the pinIOn gear
10 mm BOLTS
Remove the oil filler capRotate the ring gear severa times in both directions of rotationCheck the gear tooth contact panern through the oil filler holeThe pattern is indicated by the Prussian Blue applied to the pinion gearContact is normal if the Prussian Blue is transferred to the approximate center of each tooth, but slightly to the heel side and to the flank side