Manual Cutting Test - Pfaff 1571 Adjustment Manual

Adjustment
15

Manual cutting test

.06.07
 Sew a few stitches.
 Turn off the on/off switch.
 Carry out the cutting operation manually.
 Check requirement 1 and 2, and if necessary readjust thread catcher 1 in accordance with
 Check requirement 3, and if necessary readjust the bobbin thread retaining spring 2 in ac-
46
Requirement
1. When thread catcher 1 is on its forward stroke, it must not carry bobbin thread 3
forward too.
2. When thread catcher 1 is in its front position, bobbin thread 3 must be held reliably by
hook 4.
3. After the trimming action, both the needle thread and the bobbin thread must beperfectly
cut and bobbin thread 3 retained.
Fig. 15 - 36
Chapter 15.06.04 Position of the thread catcher.
cordance with Chapter 15.06.06 Bobbin thread retaining spring.
2
3
1
3
4