Pfaff 421E1 - Manual Cutting Test

Adjustment
13.05.11 Manual cutting test
Requirements
1. The thread catcher 2 must not push the bobbin thread in front of it during its forwards
movement.
2. At the front point of reversal of the thread catcher 2, the bobbin thread must be
approx. 2 mm behind the lug of the thread catcher.
3. After completion of the cutting process, the needle and bobbin threads must be cut
reliably and the bobbin thread must be clamped.
● Sew a few stitches.
● Turn off the on/off switch.
● Disengage latch 1.
● Carry out the cutting process by turning the handwheel.
● Check requirement 1. If necessary, readjust the thread catcher in accordance with
chapter 13.05.06 Thread-catcher height.
● Check requirement 2. If necessary, readjust the thread catcher in accordance with
chapter 13.05.07 Thread-catcher position.
● Check requirement 3. If necessary, readjust the bobbin-thread clamp spring in
accordance with chapter 13.05.09 Bobbin-thread clamp spring.
Fig. 13 - 29
2 mm
2
1
13 - 33