Operation Manual

Thread
chart
Material
Thread
Stitch
length
Light
materials:
Organdy,
light-knit
Cotton
No. 80—100
2.0
to
4.0
mm
fabric,
Taffeta,
silk,
Silk No.
80—100
lining materials.
Synthetic
thread
No.
70—140
Medium-heavy
materials:
Cotton
No. 60—100
2.0
to 4,0
mm
Cotton,
tricot,
Silk
No.
50—100
linen, dress
materials
Synthetic
thread
No.
70—140
Heavy
materials:
Tweed,
suit
Cotton
No.
40-60
2.0 to
4.5 mm
materials,
Silk
No.
40—60
denim,
heavy
cloth
Synthetic
thread
No.
70—140
Knit
fabrics:
Cotton No,
40—60
2,0
to 4.5
mm
Silk No.
40—60
Synthetic
thread
No.
70—140
Rolled
hem
Polyester
thread
No. 120/2
(180) 1.5
to 2.5
mm
Mercerized
thread
(bulk
thread)
Sewing
foot
pressure:
Position
N”
of the
foot
pressure dial is
the
standard
sewing
foot
pressure.
It is
normally
reset
only
for very
thin or
heavy
fabrics.
Thin
fabrics:
Reduce
the
sewing
foot
pressure
by
setting
to a
lower number.
Heavy
fabrics:
Increase
the
sewing
foot
pressure
by
setting
to a
higher
number.
Stitch
Ienght
setting
on 794
The
stitch
length
is regulated
by turning
feed
regulator
16.
The
numbers
indicate
the
stitch
length
in mm
which
normally
is
N
(3
mm).
A
= setting
mark.