SINGER W1599 - Manual (Page 27)

Buttonhole Density
Adjustment
Adjustment is located to right of
stitch length dial.
With some materials it is possible
that the sides or density of a button­
hole will vary, it is possible to adjust
or balance these sides by turning
the special buttonhole adjustment to
“ + ” or to attain a correct
balance.
It is advised to always turn this ad­
justment to center as this may vary
some of the other stitches slightly.
If the stitches on the right side of the
buttonhole are too open, turn the
dial counter-clockwise.
Turning dial counter-clockwise
closes right side and opens left
side.
If the stitches on the right side of the
buttonhole are too close together,
turn the dial clockwise (-i-).
Turning dial clockwise opens
right side and closes left side.
This dial can simultaneously
adjust stretch stitch balance.
Therefore please refer to page 30
when you move this dial.