Pfaff 937

Preparation
9 - 4
2
1
4
3
Fig. 9 - 05
_
+
5 cm
9.04.02 PFAFF 937 with thread trimmer -900/..
● Insert bobbin 1 into bobbin case 2.
● Guide the thread through the slot under
spring 3.
● Adjust the thread tension by turning
screw 4.
When the thread is pulled the
bobbin 1 must rotate in the
direction of the arrow.