Honda CRF250F Owner's Manual Installation And Operation page 201

Rear Wheel Removal
1. Raise the rear wheel off the ground by
placing a support block under the engine.
2. Loosen the rear axle nut (1) while
holding the rear axle shaft (2).
3. Turn both chain adjusters (3) so the rear
wheel can be moved all the way forward
for maximum drive chain slack.
(3)
(1) Rear axle nut
76
(1)
4. Move the rear wheel forward. Derail the
drive chain from the driven sprocket.
5. Remove the rear axle nut, chain
adjusters, side collars, rear axle shaft
and rear wheel from the swingarm.
(2)
(2) Rear axle shaft
(3) Chain adjusters
(3)