51
1
.06.05 Bobbin thread retaining spring
Requirement
The tension of the bobbin thread clamp spring should be as low as possible, but it should
reliably hold the bobbin thread after trimming.
Adjust bobbin thread clamp spring 1 (screws 2) in accordance with requirement.
Control
After the thread has been cut, sew a few stitches by turning the balance wheel, checking
whether the bobbin thread is drawn out of the bobbin thread clamp spring between the
1st and 3rd stitches. If necessary, correct the tension.
129-021
Fig. 1 - 42
3
129-060
1
2
Adjustment
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