Pfaff 3811-11/43, Instruction Manual

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19 Basic stitch length
(Adjustment not required for -2/45 since it is adjusted to 2.2 mm ex works)
19.1 Adjust basic stitch length to 3 mm
Note: In order to adjust the basic stitch length, the feed settings must be correct, as laid out
in chapters 17 and 18.
Requirement:
When:
- the stitch length is set at 3 mm;
- the key (fig. 1) is pressed;
- the cylinder 1 (fig. 4) is as far out as possible;
- the adjustment connecting rod 2 (fig. 5) is attached;
the stitch length should be 2 mm.
.1 Attach adjustment connecting rod 2 (fig. 5).
.2 Remove the top feed 3 (fig. 2) and the differential feed dog 4.
.3 Set the stitch length at 2 mm (adjustment lever 5; fig. 3).
.4 Switch the machine on (mains switch).
.5 Press key (fig. 1)
- cam 6 (fig. 6) runs at 10.5 on the scale.
.6 Turn off the machine! (mains switch)
.7 Pull the cylinder 1 (fig. 4) as far out as possible by hand.
.8 Place a piece of thin cardboard underneath the presser foot.
.9 Turn the handwheel slowly until 11 holes have been made in the card by the needle (diag 7).
.10 Measure the entire distance from the first hole to the last. (this distance should be 30 mm =
stitch length of 3 mm.)
.11 Correction:
Lever 7, screw 8 (fig. 4).
.12 Screw the top feed 3 (diag 2) and the differential feed dog 4 back on.
Tastenfeld von -11/43, -11/45, -13/45
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