Singer Serger Professional 5 Manual
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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 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.