SINGER 10 - Manual (Page 26)

5, 6, 8, 10 Stitch Sewing Machines
Adjusting stitch length
Any stitch length setting from 1 to 5 will give you an
open zig-zag stitch.
The higher the number, the more open, or further
apart your stitches will be.
The area between O and 1 on the dial is used for satin
stitching a series of closely spaced plain zig-zag
stitches that form a smooth satin-like surface.
Needle thread tension
The needle-thread tension dial regulates the amount
of tension on the needle thread and lets you select
just the right setting for your fabric and thread.
The correct tension setting will produce a smooth
even stitch (1).
Too much tension will produce a tight stitch (2),
causing fabric to pucker. Loosen tension by turning
dial to a lower number.
Too little tension will produce a loose stitch (3),
causing loops in your pattern. Tighten tension by
turning dial to a higher number.
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