Operation Manual

11
3.3 Opening the thread tension
Subclasses
667-180010, 667-180030
When lifting the sewing feet with the knee switch, main and supplementary
ten
sion are automatically opened.
Subclasses
667
-180112, 667-180132, 667-180312, 667-180332
The thread tension is automatically opened when trimming the thread.
3.4 Turning the supplementary thread tension on and off for subclasses 667-180312 and
667-180332
Fig. 5
The supplementary tension can be switched on and off with lever 1.
Switching on
– Pus
h the handle 2 of lever 1 to the left.
Switching off
– Pu
sh the handle 2 of lever 1 to the right.
1
2