Pfaff SMART 200C Owner's Manual page 59

3. Remove the needle, presser foot and
presser foot holder. Remove the screw
holding the needle plate and remove the
needle plate.
4. Lift up the bobbin case and remove it.
5. Clean the hook race, feed dog and bobbin
case with a brush. Also clean them, using
a soft, dry cloth.
6. Replace the bobbin case into the hook
race so that the tip (a) fi ts to the stopper
(b) as shown.
7. Replace all other parts.
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