Setting The Synchronizer - Dürkopp Adler 550-12-23 Bedienungsanleitung

2.20 Setting the Synchronizer.

Caution Risk of Injury!
Before adjusting turn the main switch off.
–
Set the sewing machine in position A.
–
Set the marker line 2 to notch 3.
First needle position:
The machine should stop at the seam end and within the seam when
the hook has securely taken up the loop. This means that the needle
should rise above its lower dead center until the hook tip has moved
approx. 6 mm above the needle to the left. (Bottom edge of the needle
eye at the upper edge of the needle plate)
Second needle position:
The machine should stop when the needle bar is in position B (upper
dead center).
Both needle positions are given automatically by the controls if the
base setting is conducted.
1
2
3
2
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