Pfaff 939 U - Position of the Thread Catcher and Cutting Test

12 - 50
Adjustment
3
3
1
2
4
6
Fig. 12 - 49
81-100
5
12.06.03 Position of the thread catcher and cutting test
Requirement
When the thread trimmer is in its neutral position, the edge of thread catcher 6 should be
flush with the edge of the mounting plate 4.
● Turn linkage rod 1 (nuts 2, left and right thread) in accordance with the requirement.
● During the cutting test, remove linkage rod 1, loosen screws 3 and remove mounting
plate 4.
● Carry out the cutting test with double thread.
● By turning screw 5 adjust the cutting pressure.
● Fit mounting plate 4 so that its edge is flush with the edge of the bed-plate.
● Tighten screws 3 and replace linkage rod 1.