Operation
Operating Instructions 967 - 02.0 - 11/2016 35
Fig. 15: Thread tension
4.7.1 Setting the needle thread tension
The needle thread tension is determined by the 3 adjusting wheels
of the tensioning screws.
In the basic position, the top of the adjusting wheel is flush with
the screw in the center.
Fig. 16: Setting the needle thread tension
To set the needle thread tension:
1. Turn the adjusting wheel to the desired tension.
• To increase the tension: Turn the adjusting wheel clockwise
• To reduce the tension: Turn the adjusting wheel counter-
clockwise
(1) - Identical needle thread and hook thread tension
(2) - Hook thread tension higher than needle thread tension
(3) - Needle thread tension higher than hook thread tension
(1) - Additional tensioner
(2) - Main tensioner
(3) - Pre-tensioner
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