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21. Adjustment of equal stitch length for forward/reverse-controlled utility stitches
Requirement:
The needle perforations for the honeycomb stitch and the stretch triple straight stitch must always take
place in the same penetration holes for forward and reverse feed (fig. 21).
Check:
● Set left knob to the widest zigzag stitch setting (fig. 21a).
● Set right knob to the honeycomb stitch.
● Set stitch length to “SS” (fig. 21b).
● Sew the honeycomb stitch.
Adjustment:
● Fold up the carrying handle.
● Turn out both arm cover retaining screws and remove arm cover.
● Loosen nut 66 with a 5.5 mm socket wrench (fig. 21c).
● Turn screw 67 approx. one turn left in direction “B”.
The stitch length of the honeycomb stitch should now be a bit too long.
● Turn screw 67 stepwise, by about 1/8 of a turn each, in direction “A”.
● Sew honeycomb stitches each time and check needle perforations.
● Continue adjusting screw 67 until the needle enters the same perforations.
● Tighten nut 66 without turning screw 67.
Test:
● Sew the honeycomb stitch and the stretch triple straight stitch and check whether the needle always
enters the same perforations.