SINGER 14T968DC - Manual (Page 42)

Two-Thread Overedge (wide)
The Two-Thread Overedge (wide) is a good choice when sewing linens and wools.
The Two-Thread Overedge (wide) has the same set up as the Two-Thread Over-
edge (narrow) Stitch. The only exception is the Right Overedge Needle is now un-
threaded and removed and the Left Overedge Needle is threaded. By
using the left needle the stitch becomes wider.
Two-Thread Overedge (wide) page 1
Right Overedge Needle Thread
Left Overedge Needle Thread