Dürkopp Adler M-TYPE H867, Руководство по обслуживанию

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Setting the stitch length adjusting wheels
30 Service manual H867 Version 00.0 - 08/2013
8.4 Setting the eccentric for the forward and backward
stitches
Correct setting
The forward and backward stitches are the same length.
As a test, sew a bartack. The insertions of the forward and backward
stitches have to lie within each other.
Cover
• Tilt the upper section backwards
(  Section 4.4.1 Access to the machine bottom section , page 10)
Figure 21: Setting the eccentric for the forward and backward stitches
Setting steps
1. Loosen the clamp setscrew (2).
2. Turn the eccentric screw (3) from the right through the opening in the
machine frame:
Basic position :
The slot in the eccentric screw (3) is parallel to the clamp 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.
3. Tighten the clamp setscrew (2).
Risk of crushing
Switch off the sewing machine before setting the eccentric.
WARNING
2
4
3
1
2
(1) - Clamp
(2) - Clamp setscrew (3) - Eccentric screw
(4) - Recess