Singer Serger Professional 5 Manual

							 
  
Four-Thread Safety Stitch  
 
This stitch is an alternative to the Five-Thread Safety Stitch.  It offers the same type of 
Two-Thread Chainstitch.  However the Th ree-Thread Overlock is now replaced by a 
Two-Thread Overedge finish. The Four-Thread Safety Stitch is appropriate\
ly used 
when sewing a medium weight woven fabric .  Because there is one less thread being 
used, the stitch is less bulky.  However, it  is still strong enough not to require straight 
stitch reinforcement from a conventional se wing machine.  This stitch requires two 
needle threads and two looper threads.  
 
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
      
 
 
 
 
 
 
 
 
 
 
             
 
 
 
 
 
 
 
 
                   Four-Thread Safety Stitch page 1   
						

							 
 
ATD: 
Auto Tension Dial  
            “I” 
Left Cover Stitch 
Needle “C”      Not Threaded 
Middle Cover Stitch 
Needle “D” (Orange)       Threaded  
Right Cover Stitch 
Needle “E”     Not Threaded  
Overedge Left  
Needle “A”     Not Threaded 
Overedge Right  
Needle “B” (Blue)      Threaded 
Upper Looper 
 Looper Engaged 
and Not Threaded 
Lower Looper 
(Red)       Threaded 
Chain Stitch Looper 
(Brown)       Threaded 
Upper Looper Clutch           “L” 
Upper Knife        Engaged 
Seam Guide Plate    Not Installed 
Seam Width Dial           “N” 
Stitch Length Dial           “N” 
Presser Foot  
Pressure           “N” 
Differential Feed Dial            “N” 
Stitch Finger           “N” 
Spreader        Engaged 
   Set at:  
Needle: 
                   Four-Thread Safety Stitch page 2   
						

							 
 
 
 
 Four-Thread Safety Stitch page 3  
 
 

						

							 
   
   
   
           Four-Thread Safety Stitch page 6  
 
  

						

							 
   
   
           Four-Thread Safety Stitch page 7  
 
  
  3. Thread the top cover thread guide by pu lling 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. Turn the handwheel toward you unt il the lower looper extends 5-10mm  
       (approximately ½ inch ) from the needle plate edge.  
 
  6. Thread the looper area of the mach ine following the red color coded  
       thread guides 4-10.  
 
  
  7. Place the thread slighty from left and  
      to the ri ght of threading guide  f. 
 
 
 
  
 
  8. Place the thread slightly from the  
               fr ont and to the back of threading 
               guide  g. 
 
 
 
 
    9. Place the thread through  h, i ,and  j. 
   
						

							 
 
 
 
          Four-Thread Safety Stitch page 8    
 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).  
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

						

							 
 
 
  
  
 
 
 
 
             4. Turn the hand wheel toward you until the  Chainstitch Looper extends out   
                  10mm (approximately ½ ”) from the needle plate edge. 
 
 
 
 
 
 
 
 
 
 
   5. Thread the looper area of the ma chine following the brown color-coded  
                thr ead guides 4-11.  Use the tweezers provided in the accessory case to  
                 aid in threading the looper. 
   Four-Thread Safety Stitch page 9  
         
           2. Thread the top cover thread guide by pulli ng 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 pu ll the thread between the tension disks.    
						

							 
  6. Place the thread through threading guide f and  g. 
 
 
 
  7. Continue threading guides  h, i , j and  k. 
 
  
 
 
 
 
  
 
  
           8. Thread  the looper eye (A) from front to back.  Pull  about 4 inches of thread          
                through the looper.  Position the thread in to the V cutout (B) on the threader.  
      Firmly hold the thread tail with y our left hand and pull threader lever (C) up  
      into place (D).  Gently pull 5- 6” of thread to the back of the machine.