Baby Lock Evolve (Previous Model) (BLE8W) Instruction and Reference Guide - Manual (Page 31)

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3-Thread Overlock - Wide
The 3-thread overlock wide stitch is perfect for edge-finishing most
woven fabrics and for seaming knits that do not require the extra dura-
bility that a fourth thread provides.
To convert your serger to a 3-thread overlock wide (5.5-7.5mm), cut the
O-2 needle thread just above the needle eye (fig. A). Remove the O-2
needle and thread completely from the machine. Re-tighten the needle
clamp screw slightly to prevent the screw from working out (fig. B).
Move the stitch selector lever to "A".
For O-1 needle, 3-thread overlock, follow the suggested settings and
the threading diagram below.
A
B
NEEDLES
O-1
LENGTH
2 - 3
WIDTH
7.5
STITCH
SELECTOR
A
WAVE
SELECTOR
O