Singer QuantumLock User Manual page 26

Three-thread overlock (narrow, wide, and wide with decorative threads)
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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
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).
11. Thread eye of looper.
Three-Thread Overlock (wide-decorative) page 6
.
,
,and
.
"V" cutout
NOTE: Make sure the Upper
Looper thread is behind the Lower Looper
thread.
Threader Lever

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