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Adjustment
1
Bobbin thread retaining spring
.07 .06
● Adjust bobbin thread clamp spring 1 (screws 2) in accordance with requirement 1.
● Adjust the tension in accordance with requirement 2 by bending side 4 of the bobbin
Control - requirement 1
● Switch off the machine and bring the take-up lever to its b.d.c.
● Engage and disengage the thread catcher 3 by hand and check requirement 1. Adjust if
Control - requirement 2
● After the thread has been cut, sew a few stitches by turning the balance wheel, checking
46
Requirement
1. The bobbin thread clamp spring should be guided reliably in the thread groove of the
thread catcher 3.
2. The tension of the bobbin thread spring clamp should be as low as possible, but the bob-
bin thread should be held reliably after the cutting operation.
Fig. 1 - 37
thread clamp spring 1.
necessary.
whether the bobbin thread is drawn out of the bobbin thread clamp spring between the
1st and 3rd stitches. If necessary, correct the tension.
3
3
4
1
2
1
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