DURKOPP ADLER M-type 867 Service Instructions Manual page 35

Setting the stitch length adjusting wheels
3. Tighten the setscrew (2).
Service Manual 867 Version 02.0 - 04/2015
The slot in the eccentric screw (3) is parallel to the setscrew (2),
the recess (4) faces the front.
If the forward and backward stitches are not the same length:
• Turning clockwise:
The forward stitch becomes larger, the backward stitch smaller.
• Turning counterclockwise:
The forward stitch becomes smaller, the backward stitch larger.
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