SINGER Simple 3116 - Manual (Page 57)

GB
Stitch density on right and left sides of buttonhole can be
adjusted by buttonhole balance control dial.
This dial should usually be in a neutral position. (between
"+" and "­")
­
If the stitches on the left side of the buttonhole are too close
together, turn the dial to the left (+).
If the stitches on the left side of the buttonhole are too open,
turn the dial to the right ( ).
* Turning dial to the left opens left side.
* Turning dial to the right closes left side.
Left and right side balance for
buttonhole
50