The very first reason for the wobbling / bad stitch by your Juki Buttonhole is that there is much oil in your Juki 761 / 762 / 763 Bobbin case and the actual tension of the thread in your bobbin is …
The cutting timing of the knife can be adjusted by moving the installed position of the knife tripping segment which is installed on the upper surface of the feed cam. When the set screw is loosened …
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