Adjustment
126
83-038
Fig. 13 - 41
3 4
5
2
1
6
13.44 Side thread tension and slack thread regulator
Requirement
Thread check spring 5 should be
1. flush with the top edge of bar 6 and
2. rise slightly from its position rest when the thread loop through the hook is at its largest.
● Thread the needle thread.
● Adjust the thread tension unit 1 ( grub screw 2 ) according to requirement 1.
● Adjust the slack thread regulator 3 ( screws 4 ) according to requirement 2.
The stroke of thread check spring 5 and the position of slack thread regulator 3
are dependent on the material and must be adjusted in accordance with the
sewing results.
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