Threading The Needle Thread; Setting The Needle Thread Tension - Duerkopp Adler 743-221 Operating Instructions Manual

2.3 Threading the Needle Thread

2.4 Setting the Needle Thread Tension

Caution Risk of Injury !
Turn the main switch off.
Thread the needle thread only with the sewing unit turned off.
–
Thread the needle thread as shown in the illustration.
Pre-tensioning 1
If the sewing unit is on, than the maintension is open. For the save
function of the needle thread monitor a residual tension of the needle
thread is necessary.
–
Set pre-tensioning 1.
If the needle thread is fixed by the thread trimmer than the thread
clamp 3 should be hold in its highest position by the pre-tensioning.
Maintension 2
The recommended needle thread tension ( app. 60 - 80 g) is the result
of pre-tensioning 1 and maintension 2.
–
Turn knurled nut 1 appropriately.
Increase tension
Decrease tension
1
2
3
= Turn knurled nut 1 clockwise
= Turn knurled nut 1 counterclockwise
7