Table of Contents
Advertisement
Adjustment
12
Manual cutting test
.05.07
12 - 27
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 be perfectly
cut and bobbin thread 3 retained.
Fig. 12 - 25
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
Chapter 12.05.04 Position of the thread catcher.
Check requirement 3, and if necessary readjust the bobbin thread retaining spring 2 in
accordance with Chapter 12.05.06 Bobbin thread retaining spring.
3
2
1
3
4
61-108
Advertisement
Table of Contents
