Singer Serger Professional 5 Manual
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Three-Thread Flatlock Narrow
The Flatlock Stitch is used decoratively to achieve the look of applied trim on a
garment, craft or home decorator projects. Special decorative threads are used for
a textured and dramatic embellishment effect. The Flatlock Stitch can also be used to
serge non-bulky seams. The Flatlock Stitch is sewn with one needle and the upper
and lower loopers. Both sides of the Flatlo cking Stitch are considered decorative.
The decorative loop effect is achieved when the Flatlock seams are stitched with the
fabrics wrong sides together. The ladder stitch is achieved when the Flatlock seams
are stitch with the fabrics right sides together. There are 2 different ways to set up
for a Three-Thread Flatlock stitch. For a mo re narrow stitch (4.0) select the right
overedge needle; for a wider stitch (6 .0) the left overedge needle is used.
Three-Thread Flatlock (narrow) page 1
Needle
:
ATD:
Auto Tension Dial
“F”
Left Cover Stitch
Needle “C” Unthreaded and
Remove Needle
Middle Cover Stitch
Needle “D” Unthreaded and
Remove Needle
Right Cover Stitch
Needle “E” Unthreaded and
Remove Needle
Overedge Left
Needle “A” Unthreaded and
Remove Needle
Overedge Right
Needle “B” (Blue) Threaded
Upper Looper
(Green) Looper Engaged
and Threaded
Lower Looper
(Red) Threaded
Chain Stitch Looper
(Brown) Unthreaded
Upper Knife Engaged
Seam Guide Plate Not Installed, use
Knife Cover Plate
Seam Width Dial “N”
Stitch Length Dial “2”
Presser Foot
Pressure “N”
Differential Feed Dial “N”
Stitch Finger “N”
Spreader Disengaged
Set Up:
Three-Thread Flatlock (narrow) page 2
The Flatlock stitch, with fabric’s right sides together, form a ladder stitch. A ribbon can then be woven by hand in and out of the stitches. The ladder stitch is ideal for joining laces together, as seen in heirloom sewing. Another idea for the ladder stitch is to use decorativ e thread through the needle to form a bold embellishment to projects. Three-Thread Flatlock (narrow) page 3
3. Thread the top cover thread guide by pulling the thread towards the left until
it slips under the guide. Then pu ll the thread along the right side of the
button as illustrated.
4. While holding the thread firmly, pull the thread between the tension disks.
5. Turn the handwheel toward you unt il the lower looper extends 5-10mm
(approximately ½ inch) fr om the needle plate edge.
6. Thread the looper area of the ma chine following the green color coded
thread guides 4-9.
Three-Thread Flatlock (narrow) page 9
7. Thread the hole in the Upper Looper from front to back k. Pull about 4
inches of thread through the loope r and place to the back of the
throat plate.