Adjustment
13 - 22
13.05.19 Bobbin thread clamp spring
Requirement
The clamp spring 1 must
1. not be pressed down during the movement of the thread catcher.
2. clamp the bobbin thread reliably after it is cut
3. not obstruct insertion and removal of the bobbin case.
Fig. 13 - 20
● Bring the thread trimmer to resting position.
● Move the clamp spring 1 (screws 2) so that the clamp lips are as close as possible to the
inside wall and to the front edge of the thread catcher 3.
● Adjust the height by bending the clamp spring 1 so that between the upper side of clamp
spring 1 and the lower side of the thread catcher 3 there is a distance of
approx. 0.1 mm.
1
2
3
0.1 mm
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