SINGER 1748 - Manual (Page 39)

To secure the beginning and the end of a seam, press down
the reverse sewing lever (A).
Sew a few reverse stitches.
Release the lever and the machine will sew forwards again. (1)
Turn the handwheel counterclockwise to bring the thread take
up lever to its highest position, raise the presser foot and
remove work behind (2) the needle and presser foot.
Pull the threads behind the presser foot. Guide the threads to
the side of the face plate and into thread cutter (B).
Pull threads down to cut. (3)
Removing the work
Cutting the thread
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1 2
3
GB Reverse sewing
A