Singer 14T967DC QuantumLock Operation instructions

14T967DC
Overlock Workbook


Congratulations on the purchase of your new SINGER®
Quantumlock® Overlock Machine! The Quantumlock®
14967DC is a time saving innovation that provides
professional seams, seam finishes, and creative stitch
capabilities. Sew one-of-kind projects with the special
effects of decorative stitching, such as Flatlocking,
Chainstitching and Rolled Hemming. The overlock works
side by side with your conventional sewing machine
and adds new creative possibilities to your sewing projects.
≈
This workbook has been created as a tool for learning
the various stitch types, which you can then apply to your
projects. The workbook is divided into fourteen individual
sections, and each section focuses on a particular stitch
type. Each section has comprehensive machine set-up
and threading directions, photos and definitions on how
and where the stitch can be used, and suggestions for
successful stitch formation. It is a good starting point to
fully understanding your Quantumlock® overlock.
≈
We are certain that your creativity will be inspired, and
that you will have many hours of sewing enjoyment with
this easy-to-use machine, feature-packed machine!
Enjoy!
The SINGER®Education Department
Singer® and Quantumlock® are registered trademarks of the Singer Company Ltd. or its affiliates.

Stitch Types:
Double Chain Stitch
Two-Thread Wrapped Edge Overlock (narrow and wide)
Two-Thread Overedge (narrow and wide)
Three-Thread Overlock
(narrow, wide, and wide with decorative threads)
Three-Thread Flatlock (narrow and wide)
Three-Thread Ultra-Stretch Mock Safety Stitch
Four-Thread Ultra-Stretch Mock Safety Stitch
Four-Thread Safety Stitch
Five-Thread Safety Stitch Wide
Five-Thread Safety Stitch Narrow
Cover Stitch Narrow
Cover Stitch Wide
Triple Cover Hem Stitch
Three-Thread Rolled Hem

Double Chain Stitch

Double Chain Stitch
This stitch is suitable for straight seams. It also can be used for a decorative
chainstitch topstitching effect. The Middle Cover needle and the Chainstitch Looper
are used. Decorative thread can be placed in the Chainstitch Looper, the needle, or
in both to create various effects.
Double Chain Stitch page 1

ATD:
Auto Tension Dial
“D”
Left Cover Stitch
Needle “C”
Unthreaded and
Remove Needle
Middle Cover Stitch
Needle “D” (Blue)
Threaded
Right Cover Stitch
Needle “E”
Unthreaded and
Remove Needle
Overedge Left
Needle “A”
Unthreaded and
Remove Needle
Overedge Right
Needle “B”
Unthreaded and
Remove Needle
Upper Looper Looper
Disengaged and
Not Threaded
Lower Looper Unthreaded
Chainstitch Looper
(Brown)
Threaded
Upper Knife Not Used
Seam Guide Plate Installed
Seam Width Dial “N”
Stitch Length Dial “N”
Presser Foot
Pressure
“N”
Differential Feed Dial “N”
Stitch Finger “R”
Spreader Not Engaged
Set at::
Needle:
Double Chain Stitch page 2

Double Chain Stitch
Turn Auto Tension Dial to “D”.
Turn Stitch Length Dial to “N”.
Disengage Upper Knife. The knife will not trim the fabric when it is disengaged.
1. Open Looper Cover.
2. Pull the movable knife holder (silver screw) to the right as far as it will go.
3. Turn the holder counter clockwise until the knife clicks into a lock
position.
Upper Knife Engaged Upper Knife Disengaged
Double Chain Stitch page 3

Turn Presser Foot
Pressure Dial to “N”.
Turn Differential Feed
Dial “N”.
Turn Seam Width Dial
to “N”.
 Place Stitch Finger to “R”.
Double Chain Stitch page 4

Install the Seam Guide Plate. The Seam Guide Plate provides a flat surface for the
fabric and seam guides. It can only be used when the knife and the lower looper
are disengaged. The Seam Guide Plate is used when sewing the Chainstitch,
Cover Stitch and the Triple Cover Stitch.
1. Open looper cover.
2. Remove Knife Cover by pulling it slightly
towards you.
3. Slide the Seam Guide Plate into place.
Disengage Upper Looper. By disengaging the Upper Looper, the looper no longer
moves when sewing. It is nonoperative. If the looper was still engaged, it would hit
the Seam Guide Plate.
1. Turn handwheel until the Upper Looper is in the
highest position.
2. Push the clutch button to the left and up to
disengage.
Upper Looper Disengaged
Double Chain Stitch page 5

Thread Chainstitch Looper with a decorative
thread
1. Raise the Presser foot to release the
tension disks. Pass the thread from
the back to the front through the
thread guide .
2. Thread the top cover thread guide by pulling the thread towards the left until
it slips under the guide. Then pull thread along the right side of the button,
as illustrated.
3. While holding the thread, firmly pull the thread between the tension disks.
Double Chain Stitch page 6