Dürkopp Adler 967 Service Instructions Manual page 75

Adjusting the thread system
Setting steps
1. Pull the thread in and wind it on to the bobbin.
2. If the thread is concentrated at one end of the bobbin, undo screw (5)
3. Tighten the screw (5).
4. If no satisfactory result is obtained in terms of point 2, incline the thread
Service instructions 967 - 00.0 - 12/2014
and align the thread tensioning element (4) so that it is central to the
thread guide.
guide (3) using the setscrews (1).
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