Brother LH4-B814-2, LH4-B814-3, LH4-B814-5 Instruction Manual
INST
.RUCTION
FOR
MANUAL
BROTHER
LH4-B814-2,
-3, -5
BROTHER
NAGOYA,
INDUSTRIES,
JAPAN
LTD.
~
FEATURES
~
• Large
e
Buttonhole
s
titches per
easily
e If the
device will
•
Special
positive s
allows
e
The
vi
bration,
e
Longitudial
accessories.
work
adjusted
upper
work.
endless flat
tarting
easy
machine
and has
space
for
stitch
width, stitch
butt
onho
without
thread
belts
and
belt
adjus
opera
tes
great
and
crosswise rulers
easy
sewing.
length,
numb
er
of
le
and
oil s
upply rate can
tilting
the
machine
break
s,
the
cutter
are
employed
slowdown. A tension pulley
tment.
quietly
durability.
with a
are
for
minimum
provided
be
head
loc
king
slip-free,
of
as
.
~
MACHINE
~
STITCH PA:rTERNS » ............
« A. SETTING
[I]. In
~-
!3].
@.
~-
[2]
~ B
[1].
~C.
[I].
st
In
sta
I
nstallation
Putting
In
stallation
. Ins
.
OILING
Oiling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
~-
Oiling
~-
Trial
CORRECT
Fitting
[2]
.
Upper
MODELS ~ ...............
UP
» .......................
allation
tallation
of the
Motor
llation
of the
Head
of
the
Mach
Flat
Belts
On
of the
Pedals
of
the Accessories . . . . . . . . . . . . . . . . . 4
AND
TRIAL
System
Operation................
Adjustment
OPERATION
eedle
int o Pla
Threading
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pulley . . . . . . . . . . . . . . . I
Base................
ine
Head
. . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . . . . . . 3
and Chains...
OPERATION
. . . . . . . . . . . . . . . . . . . . 6
.
.......
~
. . . . . . . . . . . . . . 7
ce
. . . . . . . . . . . . . . . . . . . . . 7
...
. .
......
. .
.
..
. . . . . . . . 3
~
..
. . 6
......
~-
~-
~-
!21.
rll.
~-
2
~
D.
STANDARD
[1]
.
~-
~
-
~-
~-
!21.
[ZI.
7
~-
~-
~
TROUBLE
Winding Lower
Fitting
Bobbin
Sewing... ..
Thr
ead Tensions.
Thread
Cleaning.
Case
.....................
Take-up
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I 0
ADJUSTME
eed
le
and
Hook
Pre
sser
Spring Pressure
Cutter Installat
Ch
anging
Buttonhole Stitch
Positi
on
C
utt
er Locki
Upper
Thread Scissors
Upper
and
Thr
ead
Clut ch Br
ion
Number
Adjustment
ng Device
Lower Tens
Release
ake
Adjust
SHOOT
Thr
ead..
..........
into Place
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Spring Adjustment
.
..........
. . . . . . . . . . . . . . . . 8
...........
. . . . . . . . . . . . I 0
NTS] .........
Timing
Width
Adjustment
ING
Adjus
tment
..........
Adjustment
and
Adjustme
of
Stitches
and
. . . . . . . . . . . . . . . . . . . . . . . . . 14
Adjustment........
Adjustment.
ion Regu
...................
ment
...............
~
. . . . . . . . . . . . . . . . . . 17
.........
nt . . . . . . . . . . . . 12
per Buttonhole
Reference
..... 15
. . . . . . . . . . . .
lator
......
. . .
. . .
8
9
II
II
12
13
15
15
16
~
MACHINE
Model LH4-B814
Su
b-class - 2
Main usc
Ma
x. sewing speed
N
o.of
~titches
p
er
buttomhole
Feed system Upper
Botto nhole length 6.5 - 32
Bot
tonhole
wid
th
Max. sewing thic
Max.
clamp lift
Needle
bar str
Needle
Lubr
icati
Tape
Win
kness
oke
on
der
MODELS
men's
and
women's
gar
ments
3.200 rpm 2,800 rpm
and
4mm
13.0
mm
Installed
-3
Kn
itwork
60 to 360
lower feed
mm
2-6
3.5
12.5
35.7
DP
X 5
Automatic
~
- 5
men's and
women's
garments
Upper
32-48
mm
mm
mm
mm
5mm
12
-----
feed
mm
mm
0 C
utter
f)
Needle
bar
8 Face plate
0
0 T
0
Thread
retain
er
op
cover 0 Belt
Handle
f)
Emergency s
8 Ca m cover
cover
top
lever
( STITCH
Whip
stitch
Fro
nt side
Only the
lower thread on the ot
formed
~
[]]
upp
er
thr
ead runs on the
by
a lock stitch zigzag machine.
A.
SETTING UP
. Installation
PATTERNS
top
her
side in zigzag form
Back side
of
the work
~
and only
as
zigzag stitches
~
of
the
Motor
Pulley
the
Purl stitch
The
upper
the l
ower
and left.
Fron
t side B
thread
runs
thre
ad runs across the
straight
under
upper
an
increased
thread
ack side
fro m
ten
sion and
both
right
(
I)
Slide
motor pull
screw holes in the
the
motor shaf
- 1-
t,
ey
motor
and
f)
onto
motor sh
pulley
tig
ht
en set screws e sec
matc
aft
0,
h the scr
see that
ew
seats on
ur
ely.
the
121.
Installation
(I) Loosen screw 8
0.
bed
Place bed 0 on table
and remove pump belt
of
the
on
Head Base
the back of
8.
8.
(2)
Place V-belt 8 around high-speed
8 and the larger-diameter
pulley
of
groove
the motor pulley.
(3)
Put pump belt 8 on. Slightly press
pump belt tension lever
pump belt
screw
8 tense, and tighten
8.
0 to make
About
15
-20
mm
(4)
Place V-belt 0 around low-speed
pulley
0 and the smaller-diameter
groove of the motor pulley.
(5) Install bed
given in about
high-speed pulley 8 and low-speed pulley 0 are
0 and fasten
15
to
20
* Motor pulleys and V-belts for 50Hz and 60Hz areas are different.
Select the right ones by referring to the table below.
Motor
Sub-class Machine Speed
3200 rpm
-2·-3
2800
rpm
2800
the
head
rpm
Machine
-5
~.Installation
1.
Installation
of
of
the
Frequency
50Hz Motor Pulley
60Hz
50Hz
60Hz
50Hz
60Hz
Head
Pulley
Motor Pulley 60
Motor Pulley
Motor Pulley
Motor Pulley
Motor Pulley
2.
it
with wood screws
mm when pushed with your finger and that motor pulley,
50
60
60-2800
60
60-2800
Installation
of
V-belt 8
the
tension
fli)
so that V-belts 8 and 0
in
line.
V-belt 0
43"
41"
41"
40"
41"
40"
pulley
assembly
will
42"
41"
41"
41"
41"
41"
Insert head hinges 0 into machine head 8 ,and tighten
screws
8.
Then place machine head 8 on the bed. Drive head
8 into the table.
rest
Engage tension pulley
and install tension pulley assembly 0 with screw
-2-
pawl8
with tension lever ratchet
0.
0.
~.
Putting Flat Belts On
(I)
Raise the clutch, pass flat belt 0
into belt guide D 8 and put the
belt around the low-speed pulley
and tension pulley
8.
(2)
Pull flat belt 0 out
in the back of the bed.
of
the opening
~~=~Reference
(3)
While pressing flat belt 0 from
above, turn idle
it into belt guide
pulley&
and slide
U 8 .
(
4)
Push tension lever 8 to align the
reference lines.
* If flat belt 0
tension lever
is
too tight, return
8.
* Push the emergency stop lever and insert the clutch stopper into the stop cam. Move flat belt 0 to the inner side
speed pulley and idle pulley
151.
Installation
of
the Pedals and Chains
8.
lines meet
of
the low-
Loosen
pedals
support shaft
with screws 8 at positions where the
pedals will move lightly.
he_xagonal
bolt
0.
and fit two
8 and four pedal stops 8 onto
8.
Fasten pedal stops 8
Connect hook
0.
lever
hole, and hook the chain to the left
pedal.
8 to lower thread cutter
run chain 8 through the table
-3-
Connect hook
to clutch start lever
through the table hole and hook it to
the right pedal.
Gi>
for the other chain 8
G).
run chain 0
12)
.Installation
of
the
Accessories
Ill MOTORS
Single - phase
Three-
~
,...
C)
In case
pole motor with a power rating
~i~~
In this case, install the motor as shown
The table center line
phase
of
using a commerical single-phase motor select a 4-
is
the same as the machine center line.
t,+j
Motor center line
IOOV,
4-pole, 250W motor
200V,
4-pole, 250W motor
of
300W.
or more.
at
left.
1 . Installation
Install spool stand 0
screws
0.
3.
Installation
of
of
the
spool stand
at
the right rear corner
the
bobbin
winder
of
the table with
2. Installation
Slide handle 8 onto handle shaft
handle lever
of
the
8 with nut
4.
handle
8.
Installation
8.
and fasten handle 8 to
of
the
sub-tension
Install the bobbin winder on the bed with screw
in line with the flat belt. Loosen screw
turning it so that, when bobbin winder link A
will lightly touch the flat belt.
0 and adjust bobbin winder link shaft 0 by
0.
Bobbin winder pulley 0 must be
0
is
pressed, bobbin winder pulley 0
-4-
fB
at
Install the sub-tension
head
by
screw
position
adjusted, so be careful not to bend and
remove it.
of
$.
the spring are already
machine
Strength and
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