Symmetrical Eye Form And Uniform Length Of The Buttonhole Seam - Duerkopp Adler 558 Service Instructions Manual

24. Symmetrical Eye Form and Uniform Length of the Buttonhole Seam

1
2
Both seam rows should be of equal length and the buttonhole eye
should appear circular.
Caution Risk of Injury !
Pull the mains plug before setting.
When both seam rows are not equally long the ball-headed screw 2
must be adjusted accordingly.
–
Loosen the lock nut.
–
Adjust the ball-headed screw 2 at the lower end of the turn-off
lever accordingly.
–
Tighten the lock nut.
When the buttonhole eye does not appear precisely circular the
movement of the upper control disc comes too early or too late.
–
Punch the seam pattern with a short needle into thin cardboard.
–
Loosen screw 1.
–
Turn the control disc drive shaft accordingly.
–
Tighten screw 1 again.
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