DURKOPP ADLER H-Type 969, Инструкция по эксплуатации

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Setting the stitch length adjusting wheels
Service Instructions 969 - 01.0 - 12/2015 37
7.4 Setting the eccentric for the forward and backward stitches
Proper setting
The forward and backward stitches are the same length.
As a test, sew a seam forward, stop, and sew a seam backward.
The insertions of the forward and backward stitches have to lie within one
another.
Cover
• Tilt the machine head (

p. 10)
Fig. 26: Aligning the stitch length for forward and reverse sewing
Setting steps
1. Loosen the setscrew (3).
2. Turn the eccentric screw (1) from the right through the opening in the
base plate:
Basic position :
The slot in the eccentric screw (1) is parallel to the axle of the machine,
and the recess (2) faces down.
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.
3. Tighten the setscrew (3).
Risk of injury!
Crushing injuries from moving parts.
Switch the machine off before setting the
eccentric.
WARNING
(1) - Eccentric slot
(2) - Recess (3) - Setscrew
①
③
②