Operation
32 Operating Instructions 669 - 00.0 - 08/2019
4.6.5 Switching on and off the supplementary thread
tension (optional)
This option applies to the subclasses 669-180010 and
669-180112.
Fig. 10: Switching on and off the supplementary thread tension
To switch on and off the supplementary thread tension:
Switch on
1. Push the knob (2) on the lever (1) to the left.
Switch off
1. Push the knob (2) on the lever (1) to the right.
(1) - Lever (2) - Knob