32.
POSITION
OF
THE
WIPER
Needle
2
mm
1.
Align
red marker spot ®
engraved
on the arm \vith white marker spot 0
engraved
on the handwheel.
2.
Move
red
0
in
the
arrowed
direction
and
perform
adjustment
using
adjusting
screw
0
so
that
a
clearance
of2
mm
is
provided
between the needle and wiper O .
33.
REVERSE
FEED
SWITCH
LEVER
©
©
o
*
How
to
use
1. Depress
switch
lever
O,
and
the
machine
will
immediately
run
in
the
reverse
direction.
2. Reverse
stitch
is
made
as
long
as
you
keep
depressing
the
switch
lever.
3.
Release
the
switch
lever
for
forward
sewing.
A
Height
of
the
switch
lever
Adjust
the
height
of
the
switch
lever
for
your
convenience.
Loosen
screw
0
and
adjust
the
height
as
desired.
0
0
O
e
*
Position
of
the
reverse
feed
solenoid
1.
Set
the
stitch
dial
to
the
maximum
value.
2. Loosen screws O which fix the solenoid in place.
3. Depress rererse feed control lever 0 fully downwards,
provide a 0.5 to 1.0 mm
(1/64"
to
3/64")
clearance
between solenoid 0 and rubber packing 0 on the
plunger by moving solenoid bracket 0 up and down
and
tighten
screws
0 .
34.
TABLE OF
SEWING
SPEED
FOR NEEDLE
GAUGES
Specification
Needle
gauge
Stitch
length
Sewing
speed
(Max.)
Sewing
speed
(normal)
S
1/8"
~
3/8"
(3.2
~
9.5mm)
4mm
4,500
s.p.m.
4,000
s.p.m.
7/16"-3/4"
(11.1 -
19.1mm)
3,800
3,500
7/8"
- 1-1/4"
(22.2
-
31.8mm)
3,500
3,200
G
3/16"
-
3/8"
(4.8
-
9.5mm)
4mm
»4,500
4,000
4 -
6mm
4,000
3,800
7/16"-3/4"
(11.1
-
19.1mm)
4mm
3,800
3,500
4 -
6mm
3,500
3,200
7/8"-
1-1/4"
(22.2-31.8mm)
4mm
3,500
3,200
4 —
6mm
3,200
3,000
A
3/32"-3/8"
(2.4-9.5
mm)
4mm
4,000
3,800
7/16"
-
3/4"
(11.1
-
19.1mm)
3,500
3,200
7/8"
- 1-1/4"
(22.2
-
31.8mm)
3,200
3,000
C
3/32" -
1/4"
(2.4 - 6.4 mm)
4mm
3,000
2,800
AO
-TjV/w
Ot^.Jll.
W
iiwil
jfUtI
oC
W
Uwllilil
XlCaVlCl
lllcill
(Notes)
The
above
sewing
speed
are
based
onthe
average
sewing
conditions.
You
are
requested
to
determine
an
optimum
speed
depending
on
the
kinds
of
materials
and
sewing
process.
- 8 -
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