Operation; Threading The Needle Thread; Adjusting The Needle Thread Tension; Relieving The Needle Thread Tension - Dürkopp Adler 271 Manuel D'utilisation

6

Operation

6.1

Threading the needle thread

6.2

Adjusting the needle thread tension

6.3

Relieving the needle thread tension

Caution: danger of injury !
Switch off the main switch!
Thread the needle thread only when the sewing machine is
switched off.
–
Attach the yarn roll onto the yarn stand as shown in the figure
(Page 14).
–
Thread the needle thread according to the drawing on the previous
page.
Adjusting the needle thread pre-tension
The main tension 4 of the needle thread is released during thread
cutting. However, for secure thread cutting, it is necessary that the
needle thread remains slightly tensioned during thread cutting, which
is achieved by the needle thread pre-tension 1. At the same time, the
needle thread pre-tension 1 influences the length of the cut needle
thread end and therewith the thread length that is required for the next
secure beginning of seam.
Home position:
Shorter starting thread: Turn the knurled nut 2 clockwise.
Longer starting thread: Turn the knurled nut 2 counterclockwise.
Note:
Adjust the main tension
Needle thread pre-tension 1 and main tension 4 together form the
required thread tension for the seam (see Fig. a).
Adjustment:
Tension higher:
Tension lower:
Automatic
The main tension 4 is automatically released when the thread is cut.
Turn the knurled nut 2 until its
front side is flush with the bolt 3.
After bigger changes to the
needle thread pre-tension, the
main tension 4 must possibly be
corrected in order to achieve the same
sewing results.
Turn the knurled knob 4 accordingly
Turn the knurled nut 4 clockwise
Turn the knurled nut 2 counterclockwise.
GB
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