3-thread serging
Regular 3-thread serging: 1/8" (3.5 mm) width
• Use only right needle
Turnoff the power switch and unplug the machine.
Remove the needle and the thread on the left.
Then tighten the needle clamp screw on the left slightly
to avoid losing the screw.
Wide 3-thread serging: 1/4" (5.7 mm) width
• Use only left needle
Remove the needle and the thread on the right.
Then tighten the needle clamp screw on the right slightly
to avoid losing the screw.
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