Operation Manual

9.
HOW
TO
ADJUST
THE
OVEREDGE
SEAM
WIDTH
*
The
machine
is
set
to
sew
the
four-thread
stitch
and
three-thread
left
needle
position
stitch
at
a
width
of
5.7mm
(7/32
inch).
*
The
machine
is
set
to
sew
the
three-thread
right
needle
position
stitch
at
a
width
of
3.5mm
(9/64
inch).
*
The
5.7mm
(7/32
inch)
setting
can
be
increased
to
7.2mm
(9/32
inch)
and
the
3.5mm
(9/64
inch)
setting
can
be
increased
to
5mm
(13/64
inch)
by
adjusting
the
stationary
knife.
*
Be
sure
the
machine
is
disconnected
from
the
power
source.
*
Open
the
looper
cover
(page
6).
*
Disengage
the
movable
upper
knife
(page
23).
*
Remove
the
cylinder
cover
(page
9).
*
Loosen
the
2
stationary
knife
holder
set
screws
with
the
hex-head
wrench
provided
in
the
accesso
ries.
(1)
*
Move
the
stationary
knife
holder
to
the
right
to
increase
the
stitch
width,
or
to
the
left
to
decrease
the
stitch
width.
*
Be
sure
to
align
the
cutting
edge
of
the
stationary
knife
level
with
the
top
surface
of
the
throat
plate.
(2)
(2)
I
*
Tighten
set
screws.
(3)
*
Replace
the
cylinder
cover
(page
9).
*
Return
the
movable
knife
to
its
original
position
(page
24).
*
Test
sew
and
adjust
tensions
as
necessary
to
corn
‘
pensate
for
the
increase
or
decrease
in
stitch
width.
25
Left
need’e
Left
need’e
Right
needle
(31
Note:
Do
not
set
the
overedge
seam
width
below
3.5mm
(9/64
inch).