Honda CRF50F Owner's Manual page 82

Clutch System
3. Slowly turn the adjuster counterclockwise
until a slight resistance is felt.
4. From this position, turn the adjuster
clockwise 1/8 to 1/4 turn, and tighten the
lock nut.
5. After adjustment, test ride the motorcycle to
be certain the clutch operates properly.
If you can't get proper adjustment, or the clutch
does not work properly, see your dealer.
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Servicing Your Honda