When you are doing two – thread serging for the first time, use a medium weight fabric to sew a test sample
for determining correct tension setting. Begin by setting needle tension to “1.5” and lower looper tension to
“4”. Sew the sample. If threads are not balanced make adjustments according to illustrations. Record correct
tension on chart, page 35.
9 – 2 To return from two – thread to three –
thread or four – thread sewing
1. Open the front cover and rotate the handwheel
to bring the upper looper to its lowest position.
2. With your finger or small screwdriver, push in
the brass screw and rotate clockwise to bring
the subsidiary looper to the “up” position.
3. Place upper looper thread back in any thread
guides which may have come undone and
back through the eye of the looper.
4. For four – thread sewing, replace the second
needle and its corresponding thread.
5. Move the thread guide switch from the red “2”
to the blue “3”.
6. Balance tension for three – thread or four –
thread sewing (refer to chart, page 35).
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