Kenmore 15, Instructions Manual, Page: 22 / 36

Use disc #1A and special buttonhole foot
Stitch length in red mark
Buttonhole control knob F
Feed dog control U
BUTTONHOLES
Mark buttonhole length at both ends. Without lowering the foot, let the
needle pierce the fabric at the beginning of the buttonhole. The
buttonhole length will be the distance between the needle and the front
edge of the sliding portions of the foot. Set the front edge of the foot
opening with a slight bartack allowance at the mark on the opposite end
of buttonhole. Lower the foot. Stitch forward until the needle reaches
the red zone on the front edge of foot. Then turn the knob to R, and
stitch the other side of the buttonhole. Turn knob back to F to finish
the end of buttonhole. The speed with which the knob is turned
determines the number of stitches at the ends of the buttonhole. The
slower the knob is turned, while sewing, the more stitches are formed.
See steps 1 to 4.
Reproduction on identical size buttonholes is facilitated with the aid of
the graduations on the left side of the buttonhole foot. These
graduations are 1/8 inch apart. Just mark the starting points of the
buttonholes, let the needle pierce the fabric and set the index mark (A)
on the upper portion of the foot at the same graduation mark (B) as it
was set for the first buttonhole. Lower the foot. Follow the procedures
outlined above. Always make a practice buttonhole on a scrap of fabric
used in the garment using a double thickness of fabric, and an
interfacing if used in garment.
The stitch length may be varied slightly by the stitch length control
lever within the 0 to 1 range. To increase forward stitch move this lever
from the red mark toward 1, to decrease move it toward the 0. The
buttonhole reverse stitch length control (C) is used to match the length
of the reverse stitches with the forward stitches. Turn the dial to the
minus direction for shorter stitches; to the plus direction for longer
stitches. These settings may vary depending on the type of fabric used.
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