Scissor Function Test - Pfaff 3734-2/01 Instruction Manual

Adjustment
12.

Scissor function test

05.15
● Turn the machine on.
● Sew a few stitches and turn the on/off switch off.
● Activate the engaging lever by hand and close the post cover while ensuring that pressure
● Bring the needle bar to TDC by turning the handwheel and open the post cover.
● In this position the needle and bobbin threads must be held by the catching lug of bobbin
● If the needle thread is not held, stick in a new pressure disk 1 ( part no. 91-119 492-91 ).
● Turn the handwheel and observe the cutting process.
● When the scissor is advancing, the thread trapper must first trap and hold the threads
12 - 36
Requirements
1. The threads must be cut neatly.
2. After being trimmed, the bobbin thread must be held securely by the thread trapper.
2
Fig. 12 - 32
disk 1 is stuck into the post cap.
case 2 and the needle thread must be held by the catching lug of bobbin 3.
on the scissor ( if necessary adjust the thread trapper as required after loosening
retaining screw 4 ).
3
4
1