White 1634 User manual

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TABLE
OF
CONTENTS
NAME
OF
MAIN
COMPONENTS
.
4-5
SETTONG
UP
YOUR
MACHINE
6-8
The
position
of
thread
pole
6
Cone
holders
6
Spool
caps
6
Connecting
the
foot
control
7
Controlling
sewing
speed
7
Safety
switch
7
Attaching
the
waste
catcher
8
ACCESSORIES
8
USING THE
MACHINE
9
Hand
wheel
9
Front
cover
9
Free
arm
9
LOOPER
THREADING
10
NEEDLE THREADING
11
TRIAL
SEWING
12
ADJUSTING
THREAD
TENSIONS
13-14
Adjusting
the
needle
thread
tensions
14
Adjusting the
looper
thread
tensions
14
MACHINE
ADJUSTMENT
CHART
15
CHANGING
THE
THREAD
16
BUILT-IN
POCKET
HANDLE
16
ADJUSTMENT
OF
STITICH
LENGTH
17
Stitch
length
setting
17
CUTTING
WIDTH
18
The
proper
cutting
width
18
Adjust
to
a wider
cutting
width
18
Adjust
to
a
narrower
cutting
width
18
CHANGING THE
NEEDLE
19
REPLACING
THE
BULB
19
REPLACING
THE
CUTTERS
20
THREE
THREAD
NARROW
AND
WIDE
OVERLOCK
STITCH
21
FREE
ARM
SEWING 22
CONVERTIBLE
PRESSER
FOOT
22
ROLLED
AND
NARROW EDGE
23-24
Rolled
edge
23
Narrow
edge
23
Rolled
hemming
24
Narrow
hemming
24
DIFFERENTIAL
FEED
25-26
Differential
feed
mechanism
25
Adjusting
the
differential
feed
25
Wavy
knits
&
Gathering
26
Stretching
to
prevent
puckering
26
TROUBLE
SHOOTING
GUIDE
27
CLEANING
AND
LUBRICATING
28
SPECIFICATION
OF
MACHINE
28

IMPORTANT SAFETY INSTRUCTIONS
When using an electrical
appliance, basic safety
precautions should always
be
followed,
including the following:
Read all
instructions
before using
(this sewing machine)
DANGER
To reduce the risk of electric
shock:
An appliance should never be left unattended when plugged in. Always unplug this
appliance from
the
electric outlet immediately after
using
and before cleaning.
Always unplug before relamping,
Replace
bulb with same type rated 15 watts.
WARNING To reduce the risk of burns, fire, electric shock, or
injury
to
persons:
Operate sewing machine only
when mounted
in sewing machine table, case, and the like.
See
the installation instructions.
1. Do
not allow
to be used as a toy.
Close attention
is necessary when this
appliance is
used by or near children.
2. Use
this appliance
only
for its intended
use as
described in this
manual. Use only
attachments recommended by the manufacturer
as contained in this
manual.
3.
Never
operate this
appliance if it
has a
damaged cord
or plug,
if
it is not working
properly, if it has been dropped or damaged, or dropped into water, Return the
appliance to the nearest authorized dealer or service center for examination, repair,
electrical or mechanical adjustment.
4. Never operate the appliance with any air openings blocked, Keep ventilation openings
of the
sewing
machine and
foot controller free
from the accumulation of lint, dust, and
loose cloth.
5.
Never drop or insert any object into any opening.
6. Do not
use
outdoors.
7.
Do not operate where
aerosol (spray) products
are being used or where
oxygen is
being administered.
8. To disconnect, turn all controls to the off (“0”) position, then remove plug from outlet.
9.
Do not unplug
by
pulling on cord. To unplug, grasp
the
plug, not the cord.
10. Keep fingers away from all
moving
parts. Special care is required around the sewing
machine needle.
11. Always
use
the proper needle plate. The wrong plate can
cause
the needle
to
break.
12. Do not use bent needles.
13. Do not pull or push fabric while
stitching.
It may deflect the needle causing it to break.
14.
Unplug
the sewing machine when making any
adjustments
in
the
needle area, such as
threading needle, changing needle, changing presser foot, etc.
15. Always unplug sewing machine from the electrical outlet when removing covers,
lubricating, or when making any other user servicing adjustments mentioned in the
instruction manual.
SAVE
THESE
INSTRUCTIONS

INTRODUCTION
THANK YOU
FOR CHOOSING
OUR
OVERLOCK
MACHINE
—
This
overlock
machine
can
stitch
dependable
seams
on
all kinds
of fabric,
both light
and
heavy,
including
cotton,
wool,
rayon,
tricot,
jersey, and
knits.
You do
not need
a
special table
for this
portable
machine.
We suggest
that
you read
this
instruction
manual
carefully
before
you start
to
operate
the
machine.
FOR
YOUR
SAFETY
1. Keep
your
eyes
on
the needles
when
operating
the
overlock
machine.
Do
not
touch
the
handwheel,
the
cutter
or
the
needles
when
the machine
is running.
2.
Turn
off
the power
switch,
and
pull out
the
plug
from
electric
socket
in the
following
cases:
*
When
you
have
finished
your
sewing.
* When
you
leave
the
serger
temporarily.
*
When
replacing
the
parts.
* When
cleaning and adjusting
the machine.
BEFORE
YOU
USE
1.
Wipe
dust
and
oil off the
machine
to avoid
any stains
on
the sewing
materials.
2.
Test
sew
by
using
the same
sewing
materials
you
intend
to sew.
3.
Read
this
instruction
manual
thoroughly
before replacing
the
cutters
and
the needles.
Follow
the
instructions
for
correct
replacements
and
adjustments.

TABLE
OF
CONTENTS
NAME
OF MAIN
COMPONENTS
.
4-5
SETTONG
UP YOUR
MACHINE
6-8
The
position
of
thread
pole
6
Cone
holders
6
Spool
caps
6
Connecting
the
foot
control
7
Controlling
sewing
speed
7
Safety
switch
7
Attaching
the waste
catcher
8
ACCESSORIES
8
USING THE
MACHINE
9
Hand wheel
9
Front
cover
9
Free
arm
9
LOOPER
THREADING
10
NEEDLE
THREADING
11
TRIAL
SEWING
12
ADJUSTING
THREAD
TENSIONS
13-14
Adjusting
the
needle
thread tensions
14
Adjusting
the
looper
thread
tensions
14
MACHINE
ADJUSTMENT
CHART
15
CHANGING
THE
THREAD
16
BUILT-IN
POCKET
HANDLE 16
ADJUSTMENT
OF STITICH
LENGTH
17
Stitch length
setting
17
CUTTING
WIDTH
18
The
proper
cutting
width
18
Adjust
to
a
wider cutting
width
18
Adjust
to
a
narrower
cutting
width
18
CHANGING
THE NEEDLE
19
REPLACING
THE
BULB
19
REPLACING
THE
CUTTERS
20
THREE
THREAD
NARROW
AND
WIDE
OVERLOCK STITCH
21
FREE
ARM
SEWING
22
CONVERTIBLE
PRESSER
FOOT
22
ROLLED
AND
NARROW
EDGE
23-24
Rolled
edge
23
Narrow
edge
23
Rolled
hemming
24
Narrow
hemming
24
DIFFERENTIAL
FEED
25-26
Differential
feed
mechanism
25
Adjusting
the
differential
feed
25
Wavy
knits
&
Gathering
26
Stretching
to
prevent puckering
26
TROUBLE
SHOOTING
GUIDE
27
CLEANING
AND
LUBRICATING
28
SPECIFICATION
OF
MACHINE 28
-.3
-

NAME
OF
MAIN
COMPONETS
Ii
1.
Thread
pole
2.
Lower
looper
thread
tension
dial
3.
Spool
pin
4.
Spool
holder
5.
Handwheel
6.
Base
7.
Machine
socket
8.
Power
switch
9.
Front
cover
10.
Support
bed
11.
Free
arm
12.
Needle
plate
13.
Left
needle
thread
tension
dial
14.
Right
needle
thread tension
dial
15.
Upper looper
thread
tension
dial
16.
Thread
guide
17.
Thread
guide
plate
6
I
5
9
-4

7
I
1.
Upper looper
2. Lower
looper
3. Free
arm
release
lever
4.
Free arm
5. Lower
knife
6. Cutting
width
adjustment knob
7. Presser
foot
8.
Upper knife
6
5
4
32
-D

SETTING
UP
YOUR
MACHINE
Set
your
Overlock
machine
on
a
sturdy
flat
surface.
[THE
POSITION OF
THREAD
POLE]
Pull
up
thread
pole
to
its
highest
point
before
threading.
Turn
the
thread
pole
so
the
thread guides
come
right
above
the spool
pins.
[CONE
HOLDERS]
Both
industrial
cones
and
domestic
type
thread
spools
can
be
used
on this
machine.
For
large
diameter
industrial
cones
use
the
cone
holders
with
the
large end
at
the
top.
For
small
diameter
cones. use
the
same
cone
holders
with
the
small
end
at
the
top.
[SPOOL
CAPS
J
When
using
domestic
type
thread
spools,
remove the
spool
holders
and place
spool
caps
over
the
thread
spools.
Positioning
catches
Spool
holder
A
Normal
Spool
cap
Notch
-6-

[CONNECTING
THE
FOOT
CONTROL]
Push
foot
control
plug
into the
machine
socket
and
then
into
main
socket.
Turn on
the power
switch. This
power
switch
controls
both
the machine power
and
sewing
light.
•:This
appliance has
a
polarized
plug
(one
blade widerthan
the
other).
To
reduce
the
risk
of
electric
shock,
this
plug
is
intended
to
fit
in
a
polarized
outlet
only
one
way,
if
the
plug does
not
fit
fully
in
the
outlet,
reverse
the
plug.
If
it
still
does
not
fit,
contact
a
qualified
electrician
to
install
the proper
outlet.
Do
not
modify
the
plug
in
any
way.
[CONTROLLING
SEWING
SPEED]
The
foot
control
regulates
the sewing
speed.
The
sewing
speed
can
be
adjusted
by
increasing
or
decreasing
the
pressure
on
the
foot
control.
[SAFETY
SWITCH]
This
machine
is
equipped
with
a
micro safety
switch.
The
machine
is
automatically
cut
off
form
the
electricity
supply
if
either
the
free
arm
or front
cover
is
open.
Close
both free
arm
and
front
cover
before
you
start
sewing.
Power
switch
Machine
socket
Power
supply
plug
Foot control
This
sewing
machine
is
designed
to
be
used
with
a
Yamamoto
foot
control,
Model
YC-482.
Power
supply
Foot control
Safety
switch
-7-

[ATTACHING
THE
WASTE
CATCHER]
The
waste catcher
catches
the
cut-off
fabric as
you
sew,
keeping your
working area
clean.
Place
the
waste
catcher
between
the
machine
and
table.
I
ACCESSORIES
Tweezers
Oiler
Spare
upper
cutter
Needles
Machine
cover
Screwdriver
Brush
Hexagon wrench
key
Instruction
manual
Spool caps
8-

USING
THE MACHINE
/
[HAND
WHEEL]
Always turn
handwheel
toward
you,
i.e.
the
same direction
as
on
a
household
sewing
machine.
[FRONT
COVER]
To
open front cover,
slide
the
hollow
to
the
right
as
far
as
1
will
go
then
pull
front
cover
toward
you.
The
front
cover
won’t
close
while
the
free
arm
is
open.
[FREE
ARM]
Open
the
free
arm
for
threading.
Open
the
front
cover first.
While
pushing
the
release
lever,
push
the
free
arm
down
ward
with
your
left
hand.
-9-

LOOPER
THREADING
Correct threading
is
important
otherwise uneven
stitches or
thread
breakage
may
result.
A convenient
threading
chart is
placed on the
front panel
inside the
front cover.
In addition.
each thread
guide is
colored for
threading
indication.
To
help in threading,
tweezers
can be
found
in
the accessory
box.
Threading must
be carried
out
in the following
sequence.
1.
FIRST
Upper
looper
2. SECOND Lower
looper
3. THIRD
Right needle
4. FINALLY
Left
needle
1.
Open
the front cover
and free
arm.
2. Turn
the handwheel
toward
you until. the
looper
comes
to best
position
for
threading.
3.
Pass the
upper
looper thread
and lower
looper
thread as illustrated.
Important:
The thread
must lie
correctly
between
the two
discs
inside the
tension
dials.
4. Pull
out the
thread end
about 10cm
(4”)
long from
the looper
eyes. Raise
the presser
foot and
place threads
under it, then
lower
the presser
foot.
Thread
between
two discs
Upper looper
thread
Lower looper
thread
-10-

NEEDLE
THREADING
5.
Turn
the
handwheel
toward
you
until
needles
are
fully
raised.
6.
Pass
the right
and
left
needle
threads
as
illustrated.
Important:
The
thread
must
lie
correctly
between
the
two
discs
inside the
tension
dials.
Pass
through
the
needle
eyes
from
front
to
back
as illustrated.
7.
Pull
out
the
thread
end
about
10
cm
(4”)
long
from
the needle
eyes.
Raise
the
presser
foot
and place
threads
under
it,
then
lower
the
presser
foot.
Left
needle
thread
Right
needle
thread
Thread
between
two
discs
3®
1
II
-

TRIAL
SEWING
When
the
overlock
has
been threaded
for
the
first
time
or
re-threaded
because
of
thread
breakage
during
sewing,
start
sewing
in
the
following
manner.
Holding
the
end
of
threads
between
your
left
finger
tips,
turn
the
handwheel
slowly
toward
you
two
or
three
times and
check
the
thread
chain.
Place
fabric
for
trial
sewing
under
the
presser
foot
and
start
sewing
slowly.
The
fabric
will
be
automatically
fed.
Guide
the
fabric
as
you
serge.
When
work
is
finished,
continue
sewing
to
form
about
5
cm
(2”)
long
thread
chain
from
the
end
of
fabric.
Cut
the
threads
with
a
scissor.
-
12-

I
ADJUSTING
THREAD
TENSIONS
Thread
tensions
will
vary
according
to
the
type
and
thickness
of
both
thread
and
fabric.
Adjust
the
thread
tension
of
the
machine
accordingly
while
checking
the
seam.
Thread tension:
Turn
dial
toward
smaller numbers, tension
becomes
loose.
Turn dial
toward
larger
numbers, tension
becomes
tight.
A:
Left
needle thread
tension
dial
D:
Lower
looper
thread
tension
dial
B:
Right
needle
thread
tension
dial
C:
Upper
looper
thread
tension
dial
/
ir
Correct
thread
tension
(0.24”)
Lower
looper
thread
Upper
looper
thread
-
13-

It
is
necessary
to
adjust
the
thread
tension
for
the
seams
shown
below.
[ADJUSTING
THE
NEEDLE
THREAD
TENSIONS]
[
The
left
needle
thread
tension
is
too
loose.
The
right
needle
thread
tension
is
too
loose.
ADJUSTING
THE
LOOPER
THREAD
TENSIONS
J
The
lower
looper
thread
is
tight
and/or
The
upper
looper
thread
is
tight
and/or
the
upper
looper
thread
is
loose,
the
lower
looper
thread
is
loose.
Loosen
the
lower
looper
thread
tension
Loosen
the
upper
looper
thread
tension
and/or
tighten
the
upper
looper
thread
and/or
tighten
the
lower
looper
thread
tension, tension.
Tighten
the
left
needle
thread
tension.
Tighten
the
right
needle thread
tension.
14.-

MACHINE
ADJUSTMENT
CHART
The
best
tension
for
one
fabric
may
not
be
correct
for
another.
The required
tensions
depend
upon
stiffness
and
thickness
of
fabric,
thread
size
and
type.
If
necessary,
readjust
referring
to
the
chart
below.
Fabrics
Threads
Needle
Stitch
length
Standard
Setting
Light-weight
Cotton
Georgette
Spun
HA
X
1
2.0
-
3.5
mm
I iiiiiiii1
Organdy
polyester
No.
11
f
[]IJIAi[41
I
•
Lawn
Polyester
Standard
130
I
705H 2.5
mm
continuous
. Voile
No.
80
•
Crepe-de-chine
• Silk
No.
80
-
100
etc.
Medium-weight
Cotton Cotton
•
Poplin
Spun
HA
X
1
2.0
- 3.5
mm
Gingham
polyester
No.11-14
Polyester Standard
•
Corduroy
130
/
705H
2.5
mm
continuous
No.
80
-
90
No.
60
-
100
etc.
Heavy-weight
• Cotton
•
Denim
Spun
HA
x
1
Tweed
polyester
No.14
2.5
- 4.0
mm
• Velour
Polyester
130/705H
Standard
continuous
No.
90
3.0
mm
No.
50
-
80
etc.
-
15-

CHANGING THE THREAD
(TYING ON)
It is simple
to change
the thread in
the
following
manner.
The
Built in pocket handle is a convenient way
to carry your machine.
Cut the thread above the spool pin, and knot
ends
of old and
new threads together.
Set the tension dials to
“0”
and raise the
presser foot.
Pull the other end of thread until knots come
under the presser foot. For needle threads, pull
the other
ends
of threads until knots
come to
needle
eyes and cut the threads at the both
sides of the knots. Then re-thread the needles.
I
BUILT-IN POCKET HANDLE
Pocket
handle
- 16-

ADJUSTMENT
OF
STITCH
LENGTH
There
are nine
setting adjustments
which can
be
made
from 1.0 to
5.0 mm.
Most
overlock
work
is done with
a basic
stitch length
setting of
2.5-3.5 mm.
Stitches Stitch length
Regular
seaming
2.0
- 5.0
mm
3.0
mm (Standard
Setting)
Narrow
seaming
1.0 -
2.0 mm
Rolled
edging
1.0
- 2.0
mm
Picot edging
3.0
- 4.0
mm
Stitch
length
adjustment
knob
(Inner dial)
I
I
[STITCH
LENGTH
SETTING]
-

CUTTING
WIDTH
The
proper
cutting
width
differs
with
the
type
of
fabric.
Check
the
seams
each
time,
and
adjust the
cutting
width
as
follows.
1.
Turn
the
handwheel
toward
you
until
the
needles
are
at
the
lowest
position.
2. Open
the
front
cover and
free
arm.
3.
Turn
the
cutting
width
adjustment
knob
until
the
looper
threads
lie
along
the
edge
of
the
fabric.
Adjust
to a
narrower
cutting
width
if
the
fabric
edges
curl
when
sewing.
Turn
the
cutting
width
adjustment
knob
to
the
right.
Adjust
to
a
wider
cutting
width
if
the
thread
loops
off
the
edge
of the
fabric.
Turn
the
cutting
width
adjustment
knob
to
the
left.
[THE
PROPER
CUTTING
WIDTH]
Cutting
width
adjustment
knob
Needle
plate
[ADJUST
TO
A
WIDER
CUTTING
WIDTH]
[ADJUST
TO
A
NARROWER
CUTTING
WIDTH]
Wide
Threads
looping
off
edge
of
fabric
—
Front
side
—
Front
side
—
-18-