ELNA Carina Instruction Manual page 65

Maintenance
Clean the bobbin holder with a brush.
Remove the needle, presser foot and presser foot holder.
Remove the bobbin cover plate and bobbin.
Remove the screw holding the needle plate and remove the
needle plate.
Lift up the bobbin case and remove it.
Clean the hook race, feed dog and bobbin case with a brush. Also
clean them, using a soft, dry cloth.
Replace the bobbin case into the hook race so that the tip (a) fits to
the stopper (b) as shown.
a
b
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