Needle Thread Quantity For Sure Stitch Formation - Duerkopp Adler 550-12-23 Operating Instructions Manual

4.2 Needle Thread Quantity for Sure Stitch Formation

a)
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1
With elastic sewing threads, e.g. synthetic fiber yarns, it is necessary
for sure stitch formation that a certain needle thread quantity be drawn
forward.
This occurs in the low position of the thread lever in conjunction with
the thread regulator 1.
For this set the thread regulator as follows:
–
Bring the thread lever into the lowest position
–
Adjust the thread regulator
With elastic threads:
The thread hole must be visible below the thread regulator.
Thread the needle thread to the left past the bracket. Illus. a
With less elastic threads, e.g. cotton:
The thread hole should be visible above the thread regulator.
Thread the needle thread to the right past the bracket. Illus. b
b)