Threading The Hook Thread - Duerkopp Adler 550-12-23 Operating Instructions Manual

4.3 Threading Hook Thread
Caution Risk of Injury !
Before threading turn the main switch off.
–
Lift the thread holder 1 out of its catch
–
Pull the thread through the holes 2 and 3
–
Pull the thread through the hook holes
–
Close the thread holder
Note:
Tension in the needle thread must be greater than in the hook thread.
The hook-thread tensioning knob is therefore fitted with a spring made
of thinner wire.
Excessive thread tension will cause fabric puckering.
Inadequate thread tension may lead to missed stitches.
See section 4.4 for increasing thread quantity in the seam.
1
2
3
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