Duerkopp Adler 580 Service Instructions Manual page 45

Automatic double-chainstitch buttonholer, single-chainstitch automat for stitched eyelet
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2
1
Fine adjustment (right end position)
For a 17 mm cutting block, set a buttonhole of 16 mm length
without tack and for a 10 mm cutting block, set a buttonhole
of 9 mm length without tack on the control panel.
Insert a tapping needle (short needle).
Insert a piece of cardboard as sewing material.
Sew a buttonhole.
Measure the cutting length.
The cutting length must amount exactly either 16 mm or 9 mm.
Correction
Loosen screw 2.
Adjust the right end position of the cutting block by means of the
screw 1.
Turn the screw to the right = increase the cutting length
Turn the screw to the left = decrease the cutting length
Tighten screw 2.
3
41

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