Honda CRF50F 2004 Owner's Manual page 112

6. Inspect the front and rear sprocket teeth for
excessive wear or damage. If necessary, have
your Honda dealer replace a worn sprocket.
Damaged Sprocket
Teeth
REPLACE
Normal Sprocket Teeth
GOOD
Use of a new chain with worn sprockets will
cause rapid chain wear.
LEFT SIDE
Worn Sprocket
Teeth
REPLACE
(1) rear axle nut
(2) lock nut
(3) adjusting nut
1.
2.
Adjustment
(4)
(1)
(3)
Loosen the rear axle nut ( ).
Loosen the lock nuts ( ) on both sides of the
swingarm.
Drive Chain
(5)
(2)
(4) adjuster index mark
(5) graduated scale
1
2
(cont'd)
Servicing Your Honda
103