Yamaha YFM250XL(C) Service Manual page 243

REAR WHEELS/REAR BRAKE AND REAR AXLE
13.Measure:
Rear axle runout a
Out of specification → Replace.
Rear axle runout limit:
1.5 mm (0.06 in)
WARNING
Do not attempt to straighten a bent axle.
14.Inspect:
Bearing 1 (rear axle)
Bearing allow play in the axle hub or the
bearing turns roughly → Replace.
Oil seal 2
Wear/Damage → Replace.
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Bearing and oil seal replacement steps:
Clean the area around the bearing on the
final gear case.
Remove the oil seal 1 use a flat-head
screw driver.
NOTE:
Place a wood block 2 on the outer edge to
protect this edge.
Remove the bearing 3 using a general
bearing puller.
Install the new bearing and oil seal by
reversing the previous steps.
NOTE:
Use a socket 4 that matches the outside
diameter of the race of the bearing and oil
seal.
CAUTION:
Do not strike the center race 5 or balls 6
of the bearing. Contact should be made
only with the outer race 7.
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