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1
Manual cutting test
.07 .07
Requirement
1. When thread catcher 1 is on its forward stroke, it must not carry bobbin thread 3 for-
ward 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. 1 - 38
● 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 1.07.04 Position of the thread catcher.
● Check requirement 3, and if necessary readjust the bobbin thread retaining spring 2 in
accordance with Chapter 1.07.06 Bobbin thread retaining spring.
3
2
1
Adjustment
3
4
47
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