Needle Thread Puller - Pfaff 3811-2/45 Instruction Manual

.1 Turn the handwheel until the screw 2 in the needle thread puller 1 (fig. 1) can be reached.
.2 Loosen the screw 2 slightly.
.3 Bring the needle bar to its b.d.c. (handwheel).
.4 Set the clearance at 0.3 mm in accordance with the requirement (metal ruler = 0.3 mm thick).
.5 Taking care that the needle thread puller 1 is in the middle of the face slot, tighten screw 2.
Requirement:
Note: Depending on the workpiece and the type of thread, a small change in this basic setting
may be necessary.
.1 Bring the needle bar to its b.d.c. (handwheel).
.2 Loosen the retaining screw of the needle thread regulator (arrow in fig. 2).
.3 Move the needle thread regulator 3 in such a way that its eyelet is at the same height as the hole in
the needle thread puller 1 (arrow in fig. 3).
.4 Tighten the retaining screw of the needle thread regulator 3 (arrow in fig. 2).
Note: Depending on the type of thread and the stitch length, it may prove necessary to
make a small deviation from this basic setting.
.1 Adjust the thread guide 4 in accordance with the requirement (screw 5).
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The needle thread puller 1 (fig. 1) should be attached to the needle bar in such
a way that:
- it moves freely in the middle of the face slot
- it does not come into contact with anything at its top and bottom turning
points.
With the needle bar at its b.d.c., there should be a clearance of approx. 0.3 mm
between the bottom edge of the needle thread puller and the top edge of the
needle bar frame.
With the needle bar at its bottom turning point, the eyelet of the needle thread
regulator 3 should be at the same height as the hole in the needle thread
puller 1 (arrow in fig. 3).
(basic setting)
The thread guide (fig. 4) should:
- be fastened in the middle of the elongated hole
- be vertical.