DURKOPP ADLER 969 Classic, Service Instructions Manual, Page: 41 / 122

Setting the stitch length adjusting wheel
Service Instructions 969 - 06.0 - 03/2019 39
5. Loosen the threaded pin from one of the 3 mark-off openings.
6. Screw the threaded pin into the mark-off opening for the required
maximum stitch length.
The slots are marked with numbers for the stitch length.
7. Turn the scale so that the 0 is exactly next to the adjusting mark.
8. Place the upper stitch length adjusting wheel (1) and hold it in position
using the wrench.
9. Tighten the screw (2).
7.4 Setting the eccentric for the forward and backward stitches
Proper setting
The forward and backward stitches are the same length.
To test the setting, unthread the needle thread and insert a sheet of paper.
Sew a seam forward, stop, slightly shift the sheet sideways, and sew a
seam backward. The punctures of the forward and backward stitches
have to lie exactly next to one another.
Cover
• Tilt the machine head ( 
p. 14
)
Fig. 27: Setting the eccentric for the forward and backward stitches
To set the eccentric for forward and backward stitches:
1. Loosen the threaded pin (3).
2. Turn the eccentric screw (2) from the right through the slot in the base
plate:
Initial position :
The slot in the eccentric (1) is parallel to the axle of the machine, and
the recess faces down.
If the forward and backward stitches are not the same length:
•
Turn clockwise : the forward stitch becomes larger, the backward
stitch smaller.
• Turn counterclockwise : the forward stitch becomes smaller, the
backward stitch larger.
3. Tighten the threaded pin (3).
(1) - Eccentric slot
(2) - Eccentric
(3) - Threaded pin
③
①
②