Name
Dimensions
Type
Stitch
Sewing
Max. Stitch length
Stitch width
Height
Lubrication
Main bearings and rods
Oil
Needle
Needle
Feed
Differential feed regulator
Installation
from
speed
of
presser
bar stroke
regulator
foot
High Speed Twin Needle Overlock Sewing Machine
355mm
Dust-proof, oil-proof; totally enclosed type
512, 514 (E-24)
6,000 stitches per minute
3.6mm (for sub-class
3.8mm (for sub-class
2.6mm (for sub-class
5mm-7mm
5mm & 7mm
Automatic lubrication
by
All
bearings
Viscosity:
Capacity: 700
26mm
DCx1
Push-button type, scale on face plate represents stitch length
By lever moving
obtained even in sewing operation
Semi -submerged
X 240mm x 270mm
oil wick
important parts
CS 20.62
-900cc
(#9,
#11, #14,
-1
C &
-2C)
-3C & -4C)
-5C)
by
geared pump plus sprash lubrication and lubrication
are
of phospher bronze alloy also oilless metal and ball
at
37.8°C
#16)
in
vertical direction; gathering and stretching can
be
Of this machine, there
SUB-CLASS
BROTHER
EF4-B957-1
MADE
,----//
Model
~········
Sub-class
Use
Max. sewing speed (spm)
Stitch
form (type)
Max. stitch length
Differential feed ratio 0.74-1.58
Height of presser foot (mm)
Needle gauge
Bight
(mm)
Needle
(DC
-
.~·
~-····
(mm)
X 1)
~
IN
~·
.
are
the following sub-classes available.
LIST
INDUSTRIES,
/
JAPAN//
Tricot
Four-thread
overlock
(mm)
AND
EXPLANATION
LTD.
C
/
-1C
(for general materials)
6,000
3.6
5
2.2
5 6
#9
ON THE
EF4-B957
-2C
Woven Knitted
6,000 6,000
Mock
safety
3.6
5
2.2
#11
-3C
(for elastic materials)
Four-thread
overlock safety over lock
3.8
5 5
2.2
5 7
#9
MEDALLION
-4C
Jersey
6,000 6,000
Mock Four-thread
3.8
1-2
2.2
#11
-5C
Bulky Knit
(for heavy)
materials
2.6
1.33-3.4
7
2.2
7
#14
-
1-
2.
Features
*The
*The
*Stitch
* Differential feed can be easily adjusted
* Ample space on the cloth plate allows easy sewing operation.
*Oil
*Lubrication
*Optional needle cooler ensures
*Colour
extensive design of various components and lubrication system and also the addition of the needle
cooler device on this machine assure the normal operation of maximum high speed of
minute, without any troubles.
upper knife
can be easily regulated
to change the
hands. This also applies for the instantaneous differential adjustment obtainable.
level
in
high speed of
combination of TAN-BEIGE is in well harmony with your modern factory, and operator's fatigue
can be lessened.
is
flat-shaped to make the carbide tip promises long durability
by
push-button, with the scale on the face plate, thus it is unnecessary
eccentrics
the oil
can be easily checked through the oil window
6,000
when you would like to change the
by
the lever for gathering
reservoir
stitches
is
shown on the special oil gauge on the front side of the machine.
perfect
per minute.
sewing operation even with synthetic materials and threads
stitch
length.
in
the top cover.
or
stretching without soiling your
of.
the knife.
6,000
stitches
at
per
the
~
3.
Operation
A. Sewing speed
Maximum speed of this machine is 6,000
ho~vever,
well run-in. After this running-in period, you may operate the machine
stitches
B.
Motor,
1)
2)
3)
the new machine should be operated
per
minute.
This
is desirable for machine's long life.
motor pulley and belt
Use a clutch motor,
(single phase) and MD-354 (three phase).
Use M -type V-belt.
Machine speed (s.p.m.), diameter of motor pulley and length of· motor belt
ing table.
Stitches per minute
l/2
Hp, 2 pole, single
stitches
per minute.
at
about 5,000 s.p.m.: so that all the working parts
or
three phase. Our motor available
Outside diameter of pulley and length of V-belt
50Hz
For
the first 100 actual working hours,
are
at
maximum speed of 6,000
is
Models MD-344
is
related
to the follow-
60Hz
Pulley
5,000
6,000 130mm 39inch llOmm
llOmm
V-belt
39inch
-2-
Pulley
90mm
V-belt
38inch
38inch
C. Setting up
Thi
s machine is n
up this machin e
have
If you
r
efer to rig. I. which s hows
to mount the b
With our Brother
to the b
h
ave
proper
purchased this machine
ott
otto
m bo
ard, howeve
holes on the bott
,-
l
Bolt hole for
bottom
orma
lly
are
cont
ain
om
board
clu
tch
*
r.r~
__f
• I
\1 y
-~
----
board
set
up
ed
the
to
motor.
r,
om
18 , Cen
257
~--
24i
..f
~-
267
-
as semi-subme rged type.
together
part
the
Mod
if
.
275
with the machine h
as head
s n
table as semi-submerged typ
els MD-34
you would u
board.
tre
of V belt
Scr
ew
for cush1
Cent
pulley
, I I
-
ecessa
re
of
~
only, make
ry for sett
4 an d MD-354, there IS no a nxiet y
sc
with
on
base
machme
Collar
for
'";:
..
,. ''"'
l\ecessary
ead
table
ing up this machine and also the n
oth
er brand
~-
~
rr ,-
/ / I
bo:tom
:1
fif
part
s and
.
top as
e.
rr-
;
per
atta
clutch motor, plea
-
'~
/
l""TT'\j
:
!-[
H
i
M,
\
-:~
~
accessones
ched
for setting
table shee
to set the machin
se
F1gur
es are
Cush1on
was
mak
1n
base
l.
also
ureme
e sure to
nuhmeter
nL
e
D. Oiling, draining and maintenance
O
il
Bcf
cap (shown in
funnel.
(
Fig
. 2)
Oil l
in Fig. 3.
Th
e oil r
so
Che
poured. /\del
ga
uge. Be s
ing the
(F
ig. 1)
is
drawn out
c:·e
operating the
eve
l should be up
,·servo
it
tak
es sometime
ck
if oil is up to
mac
of the
rig
. 2)
ir consists nf l
bef
oil if oil l
ure
to
chec
hine.
machin
machine . theref
and pour
to th
ore the oil levels of both tank
the
eve
k the oil
e prior to its shipment.
ore,
oil i
nto
the maching t:,;
e u
pper
line of the oif
\\'O
ta
cl\s
partition
requi r
ed level
l is bel
gauge
:t
littll' :tftn the nil i
ow
the upper line of the oil
for oil l
remo,·c the o
eve
gauge
ed
by a fille r
l b
efo
il
filt
er
i11<
.: the
shO\m
match
.
re operat-
,;
(
Fig
. 3)
(Fig
. 5)
(
Fi
g. 4)
\\
"hen operatin
or
aft
or
(i
er
drops
it
S
do not ha,·c to add o
d ail~·-
g the machine for the fir st time afte r u
it has been out
of
oil in
of
oil for a long per iod of ti me. aod
to oiling point shown in Fig. '' & 5. You
il into
them if the
machin
npacking
e is ope rated
(Fig. 6 )
1\t the end
ge the oi
chan
T he
reaf
quantity of oil re
sh
O\
m in Fig. 6 for draining oil. T he machine emplo
pump for the forced lubri c
r
eco
mmended that the o
a
year
et
c.
Th
is IS desirable for long life
of
I 00 ac
tual hours op
l.
ter. chan
ge
quir
it on
ce
ed is abo
1
11
ut
ation to
il res
erv
for c iPaning o f its inner s
of
era
tio
abo
ut
thr
ee months use.
700-900
cc.
its major movin
oir be dismounted about twice
urf
aces
. pump. wire gauze
the machine.
n. running-in period.
Th
Re m
ove the scre""
ys a gea
red
g parts. It is
~
.
E. Need le cooler device
\\'ith
machine
ing resu
s~·
1 . Operatin g procedur e
ntlwti
c
lt
model
on the res1n
..
. c
treated
threads. sue h as
...
/Tank
).1.
it
1s
equ
ipp
materials
!t~·Jon
and Dac ro
I l
~)
:;)
ed
\\'ith
the nee
such
as
polyester.
n.
it
\\·iII
be
I'
our the ,;iliconc oi I
c
apa
c
it~
·
CiOcc
fi
g. { .
[ f
this mac
fc
11'
s ili
cone
s<·\·eral dri
s
atura
The
t
he
silicone
thr
ead. co
hine
I
eng
Lime. il
oil
into
ps
te
before se\\'ing
cock musl be
oil.
lton
use the machine.
dle
coole
r cle\·ice. In
jersc~·.
ackantageous
Ill
c
;tpa
IS
brand
lakes
the
fell 011
of
sil
icone
closed
name!~
·
materials
order
and. tri
to
use t Jw
into
the
l
ank
city)
then
OJll'll
Ill'\\'
or
after
I
abou
(). J :i
t
the
needle guard.
oil
on the fl•lt so as
ope rat ion.
\\'hen the mac hine
on the slo\\'
appli
ed
ami also
speed
to
get the
cot.
etc.
. o r \\·ith til('
nvecllv cooler
apprm;
ima
t
he
cock
it has
been
S
to ,;at
minutl'
operation
\\'hen
good
sew
cil'\·ice.
tel~·
to
.)
I
I
s
ho\\
·n I
(Ill(
of
USl'
urate
the
then
appl~·
t
horough!~·
do not requ1n•
or
cotto
you clo not
ll
ll
n
(Fig. 7)
2. Sewi
3. Silicone o
ng capabil
\\'h
en
~·m1
(j
plies
of
Silicone o
\\·ould
such
il
to
il
.......
ity with
be used
:iOcc silicone oil could
cl
epc
4.
ncls on
Prop
er installtaion on the machine
Felt
the se\\·
needle cooler
Sl'\\'
the
synthetic
materials al
\'is
cosi
be
ing
work.
the
high speed of o.
ty:
:iOO
cs.
operated
1) Installation of felt supp
material
s.
approximately
Fe lt s
upport
s
hmm
Tube
C should be ins
tube
into
tube C is
jersey. tricot.
OOO
stitches
half a momh
is
inst;dlccl
in Fig.
the
tl
.
hole
fixed.
etc
per minute.
talled
of thl'
.. it
can
of se\\'ing
ort
and tube guide
on Fixed nee
on
Felt \\'i
Fix
ecl
lll'l'dle
be
ensured
operat
dle guard
th
gua
ion
f
ull~
·
rcl
I~
to
SC\\'
although
front
insert i
because
upto
it
B as
ng the
the
A
(F
ig. 8)
_____
~ -
_
Clearance
....
below
0.5
mm
5
2) Position
Th
e position
Je,·cl
as
3) Removal
of
tank
shown
of
the
of
lank
in
top
should be
Fig. 7.
cover
(
Fig
. 9)
set
up
at the pos ition
that
the
Vent hole is hi
\\'h
en you pull
as
show
n in Fig. 9.
wi
II
be
sep
dctatchahle togeth
lhe
arated.
er
tub
the
thus
with
gher than
e Point A
tank
and
the
lank can be
lop Ctl\'er.
to
fell
the
oil
the
lefl
portions
F.
Machin
The proper
e operating direction
operating
G. Installing needle
direction
of
this
machine
Turn
position.
the
t
humb
tion
as
:\ow.
its grtHJ\·ecl side fac ing tm,·a r
the
needle
1s cl
the
pulley until
lower
finger
indicat
loosen
clamp
ockwise
the
and
ed
with alT
the
hole all the ,,·ay up.
as
the
lifter ]e,·er
mm·e
needle
\·iewed from till' pull
needle
the
O\\'
set
bar
:\
shown
press
er
mark.
screw and
cl
you.
then inse
is raisccl
foot
hol
After
ey
to
in
Fig.
10
arm
B to
ding
the
rt
the
ti~hlen
side
.
its
highest
pressing
the
nee
dle \\'ith
needle
the
screw.
by
direc·
inlo
(Fig. 1
0)
H. Threading
l'
ass
the
threads through
the
eyes
of
colton slancl
then
please
do
111
the
follml'ing
order:
(I)
Un
der l
efore passing
B
pulle~
·
unt
il
as s
hmm
\\"
hen
~-ou
a
ccesso
the
11· out
Dra
ooper
the
in
Fig.
threads
ry
box.
the
thr
(2)
Ove r looper
these
threads.
needle
II
& 12.
to
ead appro
is
at
the ey
(3 & 4)
open
the
highest position. and the pr
es
of
threa
ximat
e Scm from the
Needle.
the
front cover. cloth pla te. and thread t
d guides. loopers and needle, plea
tip
of loope r.
esse
r foot arm ou
ake
-up
tward. Pass
se use with
cove
r.
the threads
the tw
turn the
eeze
r in
I.
Thread
T
hread tension
tension
may
length. the position of the
adjustment in
the following manner.
(Fig.11)
change depen
thr
ead
ding on the type
tak
e-up
and thread gui
1. Adjustme
To tighten the needle thread, lower the needle
up. T o loo!'ien it,
comes
top sur face of
its upwa rd travelling, the
feed dogs is level wi
of the needle pl
(bight)
trimming width and the tongue of the needle plate.
in
the following manner. (Fig.
to
its lowes t position.
18).
Whichever adju
screw
height of the feed
that
when the
to
fit
perfectly
the
ate.
®.
need
to
needle plate
lop
of the
th
the surfac
(Fi
g. 17)
stme
nt
you are
To
le
the
in
e
A.
\\"idening st
1) L
oosen
ri
ght ward
2)
Then loos
knife
sprin
the upper
as
en
is pressed
g.
itch
much
the
width
knife
holder set scr
as
required, and retighten the set
low
er
knife hold
to
the upper
knife
er
ew
set scr
by the
(A). move the holder
screw
(A).
ew
(B)
so
the lower
lower
knife
holder
(Fig.18)
(Fig.19)
Upper knife
set screw
knife
Retighten the set scr
positio
n.
H.
·arrowing
l) Loosen the low
leftward
temporarily.
2) Loosen
knife
:~)
L
oosen
knif
e is pressed to the upper
sp
rin
g,
Notes
I) Stitch width is determined by cloth c
stitc
as
the upper
until
it
the tempor
and ret
much
hits the lower knif
ew
(B)
h width
er
knife
holder set scr
as req
uired.
knif
e holder set screw (A). move the upper
ari
ly tightened screw (B
ighten the
screw
to
secure the lower kni
and
e,
knife by
(R)
ew (B),
retighten the set
and
retighten the
the lower
securel
utt
ing width
move the holder
),
see
that the lower
y.
and
fe
111
that
screw
screw
(A).
knif
e holder
the tongue·
(B)
(Fig.20)
C.
Attaching the upper
As s
ho\m
in
Fig. 19, attac h the upper knife
when the upper
As shown
in
Fig.
and
low
er knives
knif
e is
at
the lowest position of its st
19,
attach the lower knife
shaped part
width
appropriate
2) The upper knife has
is lowered, resharpen the lower kn
resharpeni ng
which is available
so its
so its blade is flush with the t
of
the needl
to
a considerabl e extent, change the needle plate with
one
for
of
the upper
from
front
edge is 0.5-0.?mm to the edge
rok
e.
e plate.
better
an
extrahard tip.
BROTHER
results.
knife
In
case
If
cutti
ife
as
shown in Fi
requires
or your dealer.
op
a special whetsto ne
surface
of
of
changing
ng performance
g.
20, The
of
the
lower
the needle plate.
stitc
an
knife
h
- 9 -
L.
Adjusting stitch length
$t•
!•U
...
kiSIIJUift
QUO*bfl10
~
St
itc h lengt h can be
thread
l
oca
going inwa
Stop
your
The
len
thickn
take-up
ted
in
front
rd
as
the pulley when the pointe r r
desired stitch length,
number
gth
s indicates the
may change d
ess
and
adjuste
cove
r A (Fig. 21)
of
the
the pull
diff
erent
d to
any
point. At
Then, \\"
machine
ey
is turned.
kept
depresse
eaches
and rel
epe
nding on the kind of the
stitch
ease
the push-button.
length. howeve r,
ial feeding.
first
, open the
ith the pu
d,
turn
need
shbutton
the
button
le
03
the numbe r representing
actual stitch
mat
erials, their
(
Fig.22
)
M . Adjusting differential feed.
(Fig.23A)
Dcp
endin~
to
"stretch
is
suitab
to
the
First
verti
\\"ith the
screw
For vour inf
sh0\\
11 bel
on the kind of cloth.
."
..
e,·cn
le to the kind of c loth
sca
le
plate
loosen
the
cal directions
reference
fA}
secure
ormatio
o\\".
Differential ratio
0.7-1.
5
1- 2
1.3-3.4
:·
or "sh
which carri
screw
nutil yo
line of
ly
after
n, differ
differential feed
rink.'' Sel
es
® shown in
ur des
the lever.
ect
and
scwi
differ
ent
Fi
g. 23/\, move
ired differ
Be
the diffe r
n~
co
ial r
atio
ent
ial rat io figure aligns
sure
adjustment.
ent
ial
ratio
s vs. sewing
Sewing condition,
Tricot and
Hos ier y and
calico
jer
sey
clo
(Sub-cla
(Sub-cl
Jersey, knit and bulky knit
(Sub-class -5C)
may be
ential ratio th
ndition in re f
num
era
ls.
the lever
to rel.
i.shten the
conditions
th
ss
-1
C, 2-C)
ass
-3C, -4C)
fabrics
adjusted
at
erence
in
are
-
10
-
In the
Remove cloth plate and feeding mechanism cover, loosen nut
main feed link shaft
case
to
require
larger
gathering differential feed.
by
an attached wrench, then lower downwarcl
~
of
(Fig.23B)
!
c---~
2m-T--------------
(Fig.24)
~-
(Fig. 23B)
ing.
4.
Adjustment
\Vhen the main feed link shaft is lowered until bottom-
1) Underlooper height
The underlooper's height
all the way into the looper holder.
can
2) Underlooper tilt
Attach
the underlooper aslant as shown
3) Underlooper vs. needles
a.
Needle drop
Adjust needle drop by means of the needle clamp so the right
0.2-
needle is
0.3mm away from the left needle in your direction.
be fixed
by
inserting the underlooper
,in
Fig. 24.
(Fig.25)
.
4mm
of
left
from
needle
center
(See Fig.
b
..
The leftmost position of underlooper
When the underlooper is moved all the way
must be 4mm to the
25).
center
of the left needle. (See Fig.
to
the left, its point
26)
.
(Fig.26)
-
11
-
c. Needle height
Set the needle height so when the point of the underlooper meets
the
center
of the left needle in its upward stroke, the under-
(Fig.27)
Left needle
pop
of
~"'"""-"'
-~
(Fig.28)
11
needle plate
mm above
~
j
looper point is about 1
Thus adjusted, the highest position
shown
d.
The forward and backward positions
in
Fig.
2H.
mm
above the needle hole, (See Fig.
of
the needle
of
underlooper holder.
will
27).
be as
Clearance between
and
underlooper point
should
when point is at center
of
(Fig.29)
left
be
0.05-0.1
needle.
mm
Set the forward and backward positions
holder with the point
of the left needle
are
securely.
4)
Attaching
One
it
_as
of
the underlooper
of
the underlooper
in
its rising stroke. When the })older positions
set
as
sho\\-11
the
of
the two needle guards moves with the underlooper. Attach
shown
in
Fig.
in
Fig.
29,
retighten the holder
movable needle guard
30.
in
line with the
set
~
center
screws
(Fig.30)
-
12
-
(Fig.31)
Adjust the needle guard so the clearance between the underlooper
point and the left needle is
is in line with the
movable needle guard for this adjustment. (Fig.
5)
Attaching
This needle guard serves as an auxiliary and is to be fixed to a
clearance of
clearance to zero.
6)
Positioning
This machine is so designed that two kinds of sewing Four-thread
overlock and Mock
overlooper holder assembly and holder guide assembly.
center
the
fixed needle guard
0.3-0.Bmm
the
overlooper
safety
0.05-0.1
of the left needle. Bend the needle with
as shown
are available
mm when the under looper point
31
).
in
Fig.
:32.
Never reduec the
by
simply relocating the
(Fig.32)
o positioner.
0 the way to the right, and fix it securely with the
(Fig.33)
Overlooper
must be clear
of right needle
Fixed
needle guard a. Four-thread overlock (See
Loosen the
the way
Then loosen the
bly, adjust the height of the overlooper, and fix it with the
screw(
M
holder assembly .
ove
leftward until
overlooper holder Loosen the
it
hits
..
(A)
Overlooper
clear of underlooper
unde its projected part.
underlooper and the needle. (See
b.
Mock
Adjust the underlooper height
check
Note: The holder guide assembly has been carefully positioned
must
run
to
(B) again. Finally,
safety
the relationship between the underlooper and the needles .
machine assembling process, and its
to seal it.
Fig.
33).
set
screw
the left, and fix it securely with the
(See
set
screw
You
---,--""T'!~
set
(A),
move the holder guide assembly all
screw
(B)
for the overlooper holder assem-
check
F1g.
35).
(A),
move the holder guide assembly all
are
advised not to relocate the assembly.
<P
Center of left needle
in
line with overlooper
hole
the relationship between
34).
Fig.
in
the same way as above, and
set
serew
13.8mm~
set
screw
set
is painted red
(A).
screw
in
set
the
(A).·
the
;j/7///~
Needle plate
(Fig.34)
-
13-
(Fig.35)
5.
Trouble-shooting
A. Thread break
Cause
Poor thread quality.
Thread too thick for needle size.
Needle groove or needle eye poorly