Singer Serger Professional 5 Manual

 
  
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...

 
 
 
 
 
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...

 
 
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  

 
 
 
    
Three-Thread Flatlock (narrow) page 4  

 
  
 
 
 
 
 
 
 
 
 
 
 
 
      
 
                         
 
 
 
 
 
 
 
 
                                 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
      
 
                         
 
 
 
 
 
 
 
 
                                  
 
 
 
 
 
 
 
 
 
 
 
 
 
 Three-Thread Flatlock (narrow) page 5 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
      
 
                         
 
 
 
 
 
 
 
 
                 
                
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
  
 
  
 

 
   
   
   
 Two-Thread Flatlock (narrow) page 8
 
 
  

 
  
  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...

 
  
 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.