SINGER 14T968DC - Manual (Page 105)

Three-Thread Ultra-Stretch Mock Safety Stitch page 8
10. Thread the looper eye (A) from front to back. Pull about 4 inches of thread.
Position thread into V cutout (B) on threader. Firmly hold thread tail with left
hand and pull Threader lever (C) up into place (D).
Thread Right Overedge needle with regular overlock thread.
1. Raise the Presser Foot to release the tension disks. Thread the right
needle as illustrated 1-9.
2. Pass thread from back to the front
through the thread guide .
Threader Lever
“V” cutout