Left needle
2
1
Right needle
2
1
4-2. Three thread overlock
To sew three thread overlock, simply remove
one needle.
1. Remove the right needle for wide three
thread
➀
Use dial
for the tension of the left needle
thread, stitch width / cutting width is normally
5.5 mm. The differential feed ratio is normally
"1.0".
2. Remove the left needle for narrow three
thread
The right needle sews a narrow width. Use dial
➁
for the tension of the right needle thread,
stitch width / cutting width is normally 3.5 mm.
The differential feed ratio is normally "1.0".
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