Operating instructions
38 Operating manual 867 Version 01.0 - 12/2012
5.6.1 Adjusting the needle thread tension
The 3 tension-adjusting wheels on the tensioning screw triangle
determine the needle thread tension.
In the basic position, the top of the adjusting wheel is flush with
the screw in the center.
Figure 17: Adjusting the needle thread tension
To increase the tension:
1. Turn the adjusting wheel clockwise.
To reduce the tension:
1. Turn the adjusting wheel counterclockwise.
Main tension
The main tension (3) determines the normal tension during
sewing.
Correct setting
The main tension should be set as low as possible. The thread
interlacing should be exactly in the middle of the material being
sewn.
Faults due to excessively high tension
• Crimping
• Thread breakage
1234
1
2
3
(1) - Preliminary tensioner
(2) - Additional tensioner
(3) - Main tensioner
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