Gritzner 1002 - Adjustment of Equal Stitch Length for Left and Right Buttonhole Seams

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20. Adjustment of equal stitch length for left and right buttonhole seams
Requirement:
The stitch length of the left buttonhole seam (sewn forward) and of the right buttonhole seam
(sewn backward) must be the same (fig. 20).
Check:
● Attach the buttonhole foot.
● Set control knob to “buttonhole seam” symbol No. 1 (fig. 20c).
● Set stitch length to 0.5 in buttonhole range (fig. 20d).
● Sew the left buttonhole seam.
● Change setting to right “buttonhole seam” symbol No. 3.
● Sew the right buttonhole seam.
● The stitch length must be the same.
Adjustment:
● Fold up the carrying handle.
● Turn out both arm cover retaining screws and remove arm cover.
● If left seam has longer stitch length than right one (fig. 20a), turn screw 54 slightly
in direction “A” (fig. 20e).
● If left seam has shorter stitch length than right one (fig. 20b), turn screw 54 slightly in direction “B”.
Test:
● Set stitch length somewhat shorter.
● Sew a buttonhole.
● Compare the stitch lengths of both
buttonhole seams.