Singer QuantumLock User Manual
  1. Manuals
  2. Brands
  3. Singer Manuals
  4. Sewing Machine
  5. QuantumLock
  6. User manual

Singer QuantumLock User Manual

Three-thread overlock (narrow, wide, and wide with decorative threads)
Hide thumbs
Table of Contents

Advertisement

Quick Links

Three-Thread Overlock
Narrow, Wide, and Wide
(
with Decorative Threads)

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the QuantumLock and is the answer not in the manual?

Questions and answers

Related Manuals for Singer QuantumLock

Summary of Contents for Singer QuantumLock

  • Page 1 Three-Thread Overlock Narrow, Wide, and Wide with Decorative Threads)
  • Page 2 Three-Thread Overlock (Narrow) The Three-Thread Overlock Stitch is the most commonly used stitch because of its versatility. It provides a wonderful professional seam finish to woven fabrics. It is beneficial in preventing loosely woven fabrics from unraveling. In addition, the Three-Thread Overlock Stitch offers unlimited decorative capabilities.
  • Page 3 Needle: Set-up: ATD: Auto Tension Dial “A” Left Cover Stitch Unthreaded and Needle “C” Remove Needle Middle Cover Stitch Unthreaded and Needle “D” Remove Needle Right Cover Stitch Unthreaded and Needle “E” Remove Needle Overedge Left Unthreaded and Needle “A” Remove Needle Overedge Right Threaded...
  • Page 4 The Three-Thread Overlock makes a great edge finish to a garment’s facing. Three-Thread Overlock (narrow) page 3...
  • Page 5 Turn Auto Tension Dial to “A”. Turn Stitch Length Dial to “2”. Engage 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.
  • Page 6 Turn Presser Foot Pressure Dial to “N”. Turn Differential Feed Dial to “N”. Turn Seam Width Dial to “N”. Set Stitch Finger to “N”. Three-Thread Overlock (narrow) page 5...
  • Page 7 Install the Knife Cover. Engage Upper Looper. Engaging the Upper Looper causes the looper move when sewing. Even though the Upper Looper is not threaded it needs to be engaged. 1. Push the clutch button to the left and down to engage. 2.
  • Page 8 Disengage Spreader. The Upper Looper has a hole for the thread on the top of the looper. If the stitch requires that the looper be engaged but not threaded, then the Spreader is used. The Spreader simply plugs-in (or closes) the looper’s hole. The Spreader is disengaged when the Upper Looper is engaged/operative and threaded.
  • Page 9 3. Thread the top cover thread guide by pulling the thread towards the left until it slips under the guide. Then pull 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.
  • Page 10 7. Thread the hole in the Upper Looper from front to back . Pull about 4 inches of thread through the looper and place to the back of the throat plate. Thread Lower Looper with regular overlock thread. 1. Raise the Presser Foot to release the tension disks. Thread the Lower Looper as indicated 1-10.
  • 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.
  • Page 12 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). “V”...
  • Page 13 Thread Right Overedge needle with regular thread. 1. Raise the Presser Foot to release the tension disks. Thread the right needle as indicated 1-9. 2. Pass thread from back to the front through the thread guide 3. Thread the top cover thread guide by pulling the thread towards the left until it slips under the guide.
  • Page 14 5. Continue to thread points 4-8. Slip the thread into the rear slot of the thread guide . Go over the take up lever . Continue by slipping the thread into the right slot of the thread guides 8. Before threading the eye of the needle, make sure the thread is behind the thread guide located on the bottom of the needle clamp.
  • Page 15 Align one piece of medium weight fabric so that the knife just slightly trims the fabric edge. Sew. Align a second piece of medium weight fabric so that the knife just slightly trims the fabric edge. Place the two fabrics, right sides together. Using a conventional sewing machine, sew a straight stitch with a ⅝...
  • Page 16 Three-Thread Overlock (Wide) The Three-Thread Overedge (wide) has the same set up as the Three-Thread Over- edge (narrow) Stitch. The only exceptions are the Right Overedge Needle is now unthreaded and removed and the Left Overedge Needle is threaded. By using the left needle the stitch becomes wider.
  • Page 17 Needle: Set-up: ATD: Auto Tension Dial “B” Left Cover Stitch Unthreaded and Needle “C” Remove Needle Middle Cover Stitch Unthreaded and Needle “D” Remove Needle Right Cover Stitch Unthreaded and Needle “E” Remove Needle Overedge Left Threaded Needle “A” (Orange) Overedge Right Unthreaded and Needle “B”...
  • Page 18 Thread Left Overedge needle with regular thread. 1. Raise the Presser Foot to release the tension disks. Thread the left needle as illustrated 1-9. 2. Pass thread from back to the front through the thread guide. 3. Thread the top cover thread guide by pulling the thread towards the left until it slips under the guide.
  • Page 19 5. Continue to thread points 4-8. Slip the thread into the middle slot of the thread guide . Go over the take up lever . Continue by slipping the thread into the middle slot of the thread guides 6. Before threading the eye of the needle, make sure the thread is behind the thread guide located on the bottom of the needle clamp.
  • Page 20 Turn Auto Tension Dial to “B”. Turn Stitch Length Dial to “2”. Align one piece of medium weight fabric so that the knife just slightly trims the fabric edge. Sew. Three-Thread Overlock (wide) page 5...
  • Page 21 Three-Thread Overlock (Wide—Decorative Thread) Using decorative threads can duplicate the look of fine braids and bindings often found only in ready-to-wear. It is easy to embellish sewing projects with decorative thread. Threads such as texturized nylon thread, crochet thread, pearl cotton, yarn and more easily slide through the eye of the looper.
  • Page 22 Needle: Set-up: ATD: Auto Tension Dial “B” Left Cover Stitch Unthreaded and Needle “C” Remove Needle Middle Cover Stitch Unthreaded and Needle “D” Remove Needle Right Cover Stitch Unthreaded and Needle “E” Remove Needle Overedge Left Threaded Needle “A” (Orange) Overedge Right Unthreaded and Needle “B”...
  • Page 23 Thread Upper Looper with decorative thread. 1. Raise the Presser Foot to release the tension disks. Thread the Lower Looper as illustrated 1-9. 2. Pass thread from back to the front through the thread guide. 3. Thread the top cover thread guide by pulling the thread towards the left until it slips under the guide.
  • Page 24 5. Turn the handwheel toward you until the lower looper extends 5-10mm (approximately ½ inch) from the needle plate edge. 6. Thread the looper area of the machine following the green color coded thread guides 4-9. 7. Thread the hole in the Upper Looper from front to back .
  • Page 25 Thread Lower Looper with decorative overlock thread. 1. Raise the Presser Foot to release the tension disks. Thread the Lower Looper as illustrated 1-10. 2. Pass thread from back to the front through the thread guide 3. Thread the top cover thread guide by pulling the thread towards the left until it slips under the guide.
  • Page 26 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.
  • Page 27 Thread Overedge Left needle with regular thread. 1. Raise the Presser Foot to release the tension disks. Thread the left needle as illustrated 1-9. 2. Pass thread from back to the front through the thread guide 3. Thread the top cover thread guide by pulling the thread towards the left until it slips under the guide.
  • Page 28 5. Continue to thread points 4-8. Slip the thread into the middle slot of the thread guide . Go over the take up lever . Continue by slipping the thread into the middle slot of the thread guides 6. Before threading the eye of the needle, make sure the thread is behind the thread guide located on the bottom of the needle clamp.
  • Page 29 Align double-sided quilted fabric so that the knife just slightly trims the fabric edge. Sew. Three-Thread Overlock (wide decorative) page 9...

Table of Contents

Save PDF