Pfaff 571 Instruction Manual page 120

Adjustment
Position of the thread catcher
4
Requirement
1. The bottom edge of thread catcher 1 must be at a distance of 0.1 mm from the
positioning finger of the bobbin case 3.
2. When the thread trimming device is in its neutral position, the back edge of the thread
catcher should be approx. 2.5 – 3 mm behind the edge of the knife.
3
Shift or turn thread catcher 1 (screws 2, 2 screws) in accordance with the requirements.
Thread catcher 1 must be parallel to the surface of the thread catcher holder 4.
The remaining adjustments to the thread trimming device are listed in the
corresponding instruction manuals.
1
1
4
3
2