There is a manual at
https://res.cloudinary.com/singer-se...ng_Machine.pdf It is for a 7110, but it looks like it will work for your machine. It shows how to select pattern on page 27 and then on page 28 it shows how to make the stretch stitches (yellow ones) by using the stitch length knob to have the bar symbol on the dial to the Notch symbol above. It looks like the stretch stitches do
not have an adjustable width.
Janey - Neat people never make the exciting discoveries I do.
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