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To regulate the pressure of the presser foot
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To increase the pressure of the sewing foot and to
decrease it, respectively, the bushing V —fig. 4— is
screwed in and/or out. The feeding of the machine is
done automatically. Be sure to guide the material gently
with both your hands. Do not push or pull to avoid break
ing of the needle.
The Hook
The hook of the Pfaff 131 consists of th3 hook body C,
the hook bow B, the bobbin case base U and the bobbin
case cap 0, (fig. 8). The hook bow is secured on the
body by means of screws I, II, and III. Three screws also
serve to attach the guiding plate M to the hook body.
Fig. 8
Fig. 9
10
11
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