Side Thread Tension And Slack Thread Regulator - Pfaff 3119 Instruction Manual

Adjustment
13

Side thread tension and slack thread regulator

.44
13 - 45
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.
Fig. 13 - 41
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.
6
2
3 4
1
5
83-038