Pfaff 939 U - Needle Thread Tension Release

Justierung
56
Fig. 1 - 51
1.06.05 Needle thread tension release
● Unscrew the thread wiper.
● Turn nut 1 (nut 2) in accordance with the requirements.
● Screw thread wiper back into place.
Requirement
1. When solenoids 3 are activated, the tensions disks 4 should be at least 0.5 mm apart.
2. When the thread trimmer is in its neutral position and the sewing foot is positioned on
the needle plate, the tension should be fully effective.
3
0,5 mm
1
2
4