SINGER 1120 - Manual (Page 26)

Install the darning plate. (A)
Change presser foot to button sewing foot. (B) Select zigzag
stitch.
Position the work under the foot. Place the button on the
marked position, lower the foot. Adjust stitch width to "0" and
sew a few securing stitches. Set the stitch width to number "3"
- "5". Turn the handwheel to check that the needle goes cleanly
into the left and right holes of the button (adjust the stitch width
according to the button), and slowly sew on the button with
about 10 stitches. Adjust the stitch width to "0" and sew a few
securing stitches (1).
If a shank is required, place a darning needle on top of the
button and sew (2). For buttons with 4 holes, sew through the
front two holes first (1), push the work forward and then sew
through the back two holes as described (2).
23
Sewing on buttons
1 2
A
Button sewing foot
B
5 0
1 2 3
4
5 0
1 2 3
4
Stitch width dial
( ) models A & B
Stitch length dial
(models A, B & C)
0
1
2
3
4
S
1
S 2