Singer QuantumLock User Manual page 11

4. While holding the thread, firmly pull the thread between the tension disks.
5. Turn the handwheel toward you until the lower looper extends 5-10mm
(approximately ½") from the needle plate edge.
6. Thread the looper area of the machine following the red color coded
thread guides 4-10.
7. Place the thread slighty from left and
to the right of threading guide
8. Place the thread slightly from the
front and to the back of threading
guide .
9. Place the thread through
Three-Thread Overlock (narrow) page 10
.
, and .