Operation Manual

D.
Some
adjustments
/
Maintenance
a.
Adjusting
the
seam
width
Standard
seam
width
is
3.5
mm.
It
can
be
adjusted
from
3.0mm
to
5.0mm
when
using
\\Upper
knife
control
knob
the
different
materials.
1.
Open
the
side
cover
and
looper
cover.
Push
the
upper
knife
control
knob
firmly
to
the
right
and,
whilst
maintaining
pressure,
turn
releasing
the
pressure
as
the
knife
is
lowered.
the
knob
and
knife
towards
you
downwards,
To
raise
the
knife,
simply
reverse
the
oper
ations
above.
2.
Adjust
the
required
seam
width
by
turning
the
dial.
Wide
Narrow
seam
wtdt
seam
width
•
After
adjusting
the
seam
width,
it
may
be
necessary
to
reset
the
thread
tension.
Seam
Width
d,alJ
_\‘\.
15