User Guide

Setting up
9 - 4
92-055
9.04.02 PFAFF 938 with thread trimmer
● 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.
2
1
4
3
Fig. 9 - 05
_
+
5 cm
9.04.03 PFAFF 918
● Pull the thread through the slot under the
spring as shown in the opposite
illustration.
● Adjust the thread tension by turning
screw 1 .
When the thread is pulled, the
bobbin 1 must turn in the
direction of the arrow.
Fig. 9 - 06
1
5
c
m
+
_