Roll hemming
A
B
①
②
③
④
④
Roll hemmer
The roll hemmer is built-in to the sewing machine. The fabric edge is automatically rolled and oversewn. The result is a
very fine and narrow edge finishing.
Preparation for roll hemming:
1. Remove the left-hand needle and thread the machine as for 3-thread overlocking.
2. Set the lower knife adjusting knob at “1 - 2”.
3. Turn the overlocking width selection knob toward you to align with the red marking in front of the throat plate.
4. Set the stitch length adjusting knob at “1 - 1.5”.
* Adjust the thread tensions as desired.
(A): Rolled hem
Rolled hemming stitch sews the fabric edge with the upper looper thread.
(B): Narrow overlock stitch
Narrow overlock stitch is to sew normal overlock stitches of which cutting width is narrower than usual.
Standard thread tension list for roll hemming
(rolled hem, narrow overlock sitich)
◦ Thread tension slightly differs depending on the types of the fabric and thread.
◦ Use the woolly nylon thread or thinner thread for roll hemming to attain the beautiful finish.
◦ Use the thin spun thread thinner than #80.
◦ Woolly nylon thread can be used only for the upper looper.
* Adjust the thread tension as desired.
Thread tension dial val-
ue
For rolled hem For narrow overlock stitch
Right-hand
needle
Upper loop-
er
Lower loop-
er
Right-hand
needle
Upper loop-
er
Lower loop-
er
Thread to be used
Spun thread #80 4 - 6 3 - 5 7 - 9 4 - 6 5 - 7 4 - 6
Filament thread #80
3 - 5
3 - 5
6 - 8 3 - 5
3 - 5
3 - 5
Wooly nylon thread 3 - 5 3 - 5
MO-654DEN MO-644DN
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