Principal parts of the machine
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30. Upper overedge looper
31. Lower overedge looper
32. Double chainstitch and cover stitch looper
33. Swiveling stitch width latch
34.
35. Threading aid for double chainstitch and cover-stitch looper
36. Knob for lowering the upper knife
37. Fixed lower knife
Movable upper knife
* Pull the cover to the right and open it towards you.
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