Brother LK3-B432E MKII User manual


INSTRUCTION MANUAL
Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.
ELECTRONIC LOCKSTITCH BAR TACKER
ELECTRONIC LOCKSTITCH BELT LOOP BAR TACKER
ELECTRONIC LOCKSTITCH EYELET BUTTONHOLE END
BAR TACKER
ELECTRONIC LOCKSTITCH DECORATIVE PATTERN TACKER
LK3-B430E
LK3-B431E
LK3-B432E
LK3-B433E

i
LK3-B430E-, B431E-, B432E-, B433E- Mark II
Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instruc-
tions below and the explanations given in the instruction manual.
With industrial sewing machines, it is normal to carry out work while positioned directly in front of moving parts such as the
needle and thread take-up lever, and consequently there is always a danger of injury that can be caused by these parts. Follow
the instructions from training personnel and instructors regarding safe and correct operation before operating the machine so
that you will know how to use it correctly.
SAFETY INSTRUCTIONS
1. Safety indications and their meanings
This instruction manual and the indications and symbols that are used on the machine itself are provided in order to ensure safe
operation of this machine and to prevent accidents and injury to yourself or other people.
The meanings of these indications and symbols are given below.
Indications
The instructions which follow this term indicate situations where failure to follow the instruc-
tions could cause injury when using the machine or physical damage to equipment and sur-
roundings.
Symbols
................ This symbol ( ) indicates something that you should be careful of. The picture inside the triangle indi-
cates the nature of the caution that must be taken.
(For example, the symbol at left means “beware of injury”.)
................ This symbol ( ) indicates something that you must not do.
................ This symbol ( ) indicates something that you must do. The picture inside the circle indicates the nature
of the thing that must be done.
(For example, the symbol at left means “you must make the ground connection”.)
CAUTION
The instructions which follow this term indicate situations where failure to follow the instructions
will almost certainly result in death or severe injury.
DANGER

ii LK3-B430E-, B431E-, B432E-, B433E- Mark II
Use the sewing machine in an area which is free from
sources of strong electrical noise such as high-
frequency welders.
Sources of strong electrical noise may cause prob-
lems with correct operation.
Any fluctuations in the power supply voltage should
be within ±10% of the rated voltage for the machine.
Voltage fluctuations which are greater than this may
cause problems with correct operation.
The power supply capacity should be greater than the
requirements for the sewing machine's electrical
consumption.
Insufficient power supply capacity may cause prob-
lems with correct operation.
CAUTION
The ambient temperature should be within the range
of 5°C to 35°C during use.
Temperatures which are lower or higher than this may
cause problems with correct operation.
The relative humidity should be within the range of 45%
to 85% during use, and no dew formation should occur
in any devices.
Excessively dry or humid environments and dew for-
mation may cause problems with correct operation.
Avoid exposure to direct sunlight during use.
Exposure to direct sunlight may cause problems with
correct operation.
In the event of an electrical storm, turn off the power
and disconnect the power cord from the wall outlet.
Lightning may cause problems with correct operation.
Environmental requirements
Machine installation should only be carried out by a
qualified technician.
Contact your Brother dealer or a qualified electrician
for any electrical work that may need to be done.
The sewing machine weighs more than 47 kg. The
installation should be carried out by two or more people.
Do not connect the power cord until installation is
complete, otherwise the machine may operate if the
foot switch is pressed by mistake, which could result
in injury.
Hold the machine head with both hands when tilting it
back or returning it to its original position.
Furthmore, after tilring back the machine head, do not
push the face plate side or the pulley side from above,
as this could cause the machine head to topple over,
which may result in personal injury or damage to the
machine.
Be sure to connect the ground. If the ground connec-
tion is not secure, you run a high risk of receiving a
serious electric shock, and problems with correct
operation may also occur.
All cords should be secured at least 25 mm away from
any moving parts. Furthermore, do not excessively
bend the cords or secure them too firmly with staples,
otherwise there is the danger that fire or electric shocks
could occur.
Install the belt covers to the machine head and motor.
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
Be sure to wear protective goggles and gloves when
handling the lubricating oil and grease, so that they do
not get into your eyes or onto your skin, otherwise in-
flammation can result.
Furthermore, do not drink the oil or eat the grease un-
der any circumstances, as they can cause vomiting
and diarrhoea.
Keep the oil out of the reach of children.
Installation
2. Notes on safety
Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before
opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury.
DANGER

iii
LK3-B430E-, B431E-, B432E-, B433E- Mark II
CAUTION
Set the needle to the needle up stop position before
turning off the power.
If this is not done, the wiper may strike the needle,
which might cause the needle to break.
Turn off the power switch before carrying out cleaning,
otherwise the machine may operate if the foot switch
is pressed by mistake, which could result in injury.
Be sure to wear protective goggles and gloves when
handling the lubricating oil and grease, so that they do
not get into your eyes or onto your skin, otherwise in-
flammation can result.
Furthermore, do not drink the oil or eat the grease un-
der any circumstances, as they can cause vomiting
and diarrhoea.
Keep the oil out of the reach of children.
This sewing machine should only be used by opera-
tors who have received the necessary training in safe
use beforehand.
The sewing machine should not be used for any
applications other than sewing.
Be sure to wear protective goggles when using the
machine.
If goggles are not worn, there is the danger that if a
needle breaks, parts of the broken needle may enter
your eyes and injury may result.
Set the needle to the needle up stop position before
turning off the power.
If this is not done, the wiper may strike the needle,
which might cause the needle to break.
Turn off the power switch at the following times,
otherwise the machine may operate if the foot switch
is pressed by mistake, which could result in injury.
• When threading the needle
• When replacing the needle and bobbin
• When not using the machine and when leaving the
machine unattended
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
Attach all safety devices before using the sewing
machine. If the machine is used without these devices
attached, injury may result.
Do not touch any of the moving parts or press any
objects against the machine while sewing, as this may
result in personal injury or damage to the machine.
If an error occurs in machine, or if abnormal noises or
smells are noticed, immediately turn off the power
switch. Then contact your nearest Brother dealer or a
qualified technician.
If the machine develops a problem, contact your
nearest Brother dealer or a qualified technician.
Sewing
Cleaning
Hold the machine head with both hands when tilting it
back or returning it to its original position.
Furthermore, after tilting back the machine head, do
not push the face plate side or the pulley side from
above, as this could cause the machine head to topple
over, which may result in personal injury or damage to
the machine.
Use only the proper replacement parts as specified by
Brother.
If any safety devices have been removed, be abso-
lutely sure to re-install them to their original positions
and check that they operate correctly before using the
machine.
Any problems in machine operation which result from
unauthorized modifications to the machine will not be
covered by the warranty.
Maintenance and inspection of the sewing machine
should only be carried out by a qualified technician.
Ask your Brother dealer or a qualified electrician to
carry out any maintenance and inspection of the
electrical system.
Set the needle to the needle up step position before
turning off the power.
If this is not done, the wiper may strike the needle,
which might cause the needle to break.
Turn off the power switch and disconnect the power
cord from the wall outlet at the following times,
otherwise the machine may operate if the foot switch
is pressed by mistake, which could result in injury.
• When carrying out inspection, adjustment and
maintenance
• When replacing consumable parts such as the ro-
tary hook
If the power switch needs to be left on when carrying
out some adjustment, be extremely careful to observe
all safety precautions.
Maintenance and inspection

iv LK3-B430E-, B431E-, B432E-, B433E- Mark II
Safety devices
Eye guard
Finger guard
Thread take-up cover
Thread take-up solenoid cover
Belt cover
Motor cover, etc.
2
Moving parts
may cause injury.
Operatewithsafetydevices.
Turn off main switch before
threading, changing bobbin
and needle, cleaning etc.
3Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a
serious electric shock, and problems with correct operation may also occur.
The following warning labels appear on the sewing machine.
Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are
difficult to read, please contact your nearest Brother dealer.
3. Warning labels
1
Hazardous voltage
will cause injury.
Turn off main
switch and wait 5
minutes before
opening this cover.
Un voltage non adapté
provoque des blessures.
Eteindrel'interrupteur et
attendre 5 minutes
avantd' ouvrir le capot
Hochspannung
verletzungsgefahr!
Bitte schalten sie den
hauptschalter aus und
warten sie 5 minuten,
bevor sie diese
abdeckung öffnen.
Un voltaje inadecuado
puede provocar las
heridas.
Apagar el interruptor
principal y esperar 5
minutos antes de abrir
esta cubierta.
Eye guard
Thread take-
up solenoid
cover Finger
guard
2
Motor cover
3
4Direction of operation
Thread
take-up
cover
4
Belt cover
1
LK3-B430E Mark II
LK3-B432E Mark II
LK3-B433E Mark II
[LK3-B431E Mark II]
Thread take-up cover
Eye guard
Thread take-up
solenoid cover Motor cover
Belt cover
1
3
2
4
Finger
guard
B432E Mark II

LK3-B430E-, B431E-, B432E-, B433E- Mark II
CONTENTS
1. NAME OF EACH PART............................... 01
2. SPECIFICATIONS ......................................... 02
2-1. Specifications ....................................... 2
2-2. Program list .......................................... 3
3. INSTALLATION............................................. 07
3-1. Power table........................................... 7
3-2. Installing the motor ............................. 9
3-3. Installing the motor pulley.................. 9
3-4. Installing the control box .................... 10
3-5. Installing the rubber cushions............ 11
3-6. Installing the oil pan............................ 11
3-7. Installing the cushions......................... 11
3-8. Installing the machine head ............... 12
3-9. Installing the head rest........................ 12
3-10. Installing the liquid cooling tank,
optional ................................................. 12
3-11. Installing the operation panel............. 13
3-12. Connecting the ground wire............... 13
3-13. Connecting the cords........................... 14
3-14. Installing the V-belt.............................. 15
3-15. Installing the belt cover....................... 16
3-16. Installing the foot switch..................... 16
3-17. Installing the motor cover................... 17
3-18. Installing the spool stand.................... 17
3-19. Installing the eye guard ...................... 17
4. LUBRICATION............................................... 18
4-1. Lubrication points ................................ 18
5. OPERATION .................................................. 19
5-1. Name and function of each
operation panel item ........................... 19
5-2. Operating procedure............................ 21
6. CHECKING THE SEWING PATTERN....... 22
7. CORRECT USE......................................... 23
7-1. Selecting the needle and thread ........ 23
7-2. Installing the needle ............................ 23
7-3. Threading the upper thread................ 23
7-4. Winding the lower thread ................... 24
7-5. Replacing the bobbin case and
threading the thread............................ 25
7-6. Sewing conditions and thread
tension................................................... 25
8. SEWING ................................................... 28
9. MAINTENANCE AND INSPECTION....... 29
9-1. Cleaning the rotary hook .................... 29
9-2. Lubrication............................................ 30
9-3. Draining the oil..................................... 31
9-4. Cleaning the control box air inlet
port ........................................................ 31
9-5. Cleaning the eye guard ....................... 31
9-6. Checking the needle ............................ 31
10.STANDARD ADJUSTMENTS ................. 32
10-1. Adjusting the needle bar height......... 32
10-2. Adjusting the needle bar lift
amount.................................................. 32
10-3. Adjusting the driver needle guard ..... 33
10-4. Adjusting the needle clearance .......... 33
10-5. Adjusting the shuttle race thread
guide...................................................... 33
10-6. Adjusting the thread take-up
amount.................................................. 34
10-7. Adjusting the movable knife............... 34
10-8. Adjusting the work clamp lift
amount.................................................. 36
10-9. Work clamp pressure adjustment ...... 37
10-10.Work clamp closing-distance
adjustment ............................................ 38
10-11.Work clamp interchangeability........... 38
10-12.Adjusting the needle up stop
position ................................................. 39
10-13.Adjusting the thread wiper ................. 39
10-14.Checking the input sensor and
DIP switch input ................................... 40
10-15.Checking the input voltage ................. 41
10-16.Clearing all memory settings ............. 41
10-17.Moving stitch patterns......................... 42
11.USING THE COUNTERS......................... 43
11-1. Using the bobbin thread counter....... 43
11-2. Using the production counter ............ 43
12.CHANGING FUNCTIONS USING
THE DIP SWITCHES ................................ 44
12-1. Operation panel DIP switches ............ 44
12-2. Setting the presser mode ................... 44
12-3. DIP switches inside the control
box......................................................... 45
12-4. Using user programs........................... 46
13.CHANGING SPECIAL FUNCTIONS
USING THE MEMORY SWITCHES ........ 48
13-1. Using the cycle sewing function ........ 50
14.TABLE OF ERROR CODES...................... 52
15.GAUGE PARTS LIST ACCORDING
TO SUBCLASSES.................................... 54
16.TROUBLESHOOTING ................................. 62
17.OPTIONAL PARTS ....................................... 65

1LK3-B430E-, B431E-, B432E-, B433E- Mark II
1 . NAME OF EACH PART
1. NAME OF EACH PART
Safety devices;
qPower switch !0Finger guard
wControl box !1Eye guard
eOperation panel !2Thread take-up cover
rFoot switch !3Belt cover
tMotor !4Motor cover
yTension release lever !5Thread take-up solenoid cover
uPulley
iSpool stand
oThread take-up lever
!5
y
!1
!2 o
u
!3
i
e
q
w
r
!4
t
!0
!5
o
!2
!1
y
!0
i
u
!3
!4
t
q
w
e
r
LK3-B430E Mark II
LK3-B432E Mark II
LK3-B433E Mark II
[LK3-B431E Mark II]
B432E Mark II

2
LK3-B430E-, B431E-, B432E-, B433E- Mark II
2 . SPECIFICATIONS
2-1 . Specifications
2 . SPECIFICATIONS
Standard equipment Standard equipment
(Option for -2 spec.)
Maximum sewing
speed
Maximum pattern size
Feed mechanism
Stitch length
Number of stitches
Maximum stitch
number
Work clamp lifter
Work clamp height
Rotary hook
Wiper device
Thread trimmer
device
Thread take-up device
Data storage method
Number of user
programs
Number of stored
data
Motor
Weights
Power source
Single needle lock stitch
2,500rpm2,700rpm
12 ×3 mm max. 30 ×30 mm max.30 ×10 mm max.
R-θintermittent feed mechanism (pulse-motor driven mechanism)
0.1-10.0 mm
Variable ( 21, 28, 35,
42, 45 stitches pre-
set) Variable ( 21, 28, 35
stitches pre-set) Variable
Variable (14, 15, 19,
21, 22, 28, 29, 30, 35,
42, 43, 45, 56, 64
stitches pre-set)
20,000 stitches (including 10,000 stitches which can be added)
Solenoid type
17 mm max.
Shuttle hook (shuttle hook 2, optional)
Standard equipment
Standard equipment
Standard equipment
(Option for -2 spec.)
P-ROM (Any sewing pattern can be added using BAS-PC/300.)
16
(Up to 100 patterns can be added. Total number of stitches of stored data
which can be added is within 10,000.)
6 sewing patterns
are set already 3 sewing patterns are set already
33 sewing patterns
are set already
Three-phase 400W induction motor
Machine head: 47kg, Operation panel: 0.6kg,
Control box: 9-19kg (depending on destination)
Single-phase 220-230V
3-phase 220, 380, 400, 415V
Maximum electric power consumption; 600VA
Stitch formation
Number of cycle
programs 4
LK3-B431E Mark II
Electronic lockstitch
belt loop bar tacker
LK3-B432E Mark II
Electronic lockstitch
eyelet buttonhole
end bar tacker
LK3-B433E Mark II
Electronic lockstitch
decorative pattern
tacker
LK3-B430E Mark II
Electronic lockstitch
bar tacker
BROTHER INDUSTRIES, LTD.
MADE IN JAPAN
LK3-B430E-3
BROTHER INDUSTRIES, LTD.
MADE IN JAPAN
LK3-B431E-3
BROTHER INDUSTRIES, LTD.
MADE IN JAPAN
LK3-B432E
BROTHER INDUSTRIES, LTD.
MADE IN JAPAN
LK3-B433E-3
5
2
7Denim
Knitted materials
Ordinary materials
1
Bar tacking length 14 - 25mm
3
Bar tacking length 6 - 14mm
2Denim
2Ordinary materials
1
Knitted materials
7

3LK3-B430E-, B431E-, B432E-, B433E- Mark II
2-2 . Program list
Sewing patterns are limited as shown in the table below. (Any program is available as long as the sewing
pattern is within the work clamp and feed plate in size.)
The sewing size is the length when the enlargement/reduction ratio is 100%.
[B430E Mark II]
-1
-5
-2
Use
For ordinary
materials
For denim
Program No.
1
4
5
8
13
15
20
21
2
3
6
14
16
17
18
19
Sewing pattern No. of
stitches
42
30
29
21
35
42
28
35
42
35
30
35
43
42
56
64
Standard bar
tacking length
16mm
16mm
10mm
7mm
10mm
10mm
7mm
7mm
20mm
20mm
16mm
16mm
16mm
24mm
24mm
24mm
Standard bar
tacking width
2mm
2mm
2mm
2mm
2mm
2mm
2mm
2mm
3mm
3mm
3mm
3mm
3mm
3mm
3mm
3mm
Specifica-
tion
2 . SPECIFICATIONS
* The difference between -1 and -5 specifications for ordinary material is that the standard presser foot and
feed plate are different.

4
LK3-B430E-, B431E-, B432E-, B433E- Mark II
31
32
33
28
22
15
8mm
8mm
8mm
2mm
2mm
2mm
-7
Use
For knitted
materials
Program No.
7
9
22
Sewing pattern No. of
stitches
28
21
14
Standard bar
tacking length
8mm
7mm
7mm
Standard bar
tacking width
2mm
2mm
2mm
Specifica-
tion
Program No.
10
11
12
23
24
25
Sewing pattern No. of
stitches
21
28
28
35
42
45
Standard bar
tacking length
10mm
10mm
20mm
25mm
25mm
25mm
Standard bar
tacking width
0.3mm
0.3mm
0.3mm
0.3mm
0.3mm
0.3mm
* To prevent thread breakage due to heat, set the sewing speed to a maximum of 2,500 rpm for sewing
knitted materials.
* The sewing start and sewing end of the sewing patterns for program numbers 31 to 33 are in the middle of
the pattern.
<Straight bar tacking>
2 . SPECIFICATIONS
* Use the presser foot and feed plate for straight bar tacking when using the
above programs.

5LK3-B430E-, B431E-, B432E-, B433E- Mark II
Vertical bar
tacking
vertical
straight bar
tacking
Sewing patternProgram No.
26
27
28
29
30
No. of
stitches
28
35
19
21
28
Standard bar
tacking length
3mm
3mm
0.3mm
0.3mm
0.3mm
Standard bar
tacking width
10mm
10mm
10mm
10mm
10mm
<Vertical bar tacking &
vertical straight bar
tacking>
2 . SPECIFICATIONS
* Use the presser foot and feed plate for straight bar tacking when using the above
programs.
If you want to sew a pattern other than standerd patterns, you can create your original pattern using the BAS-
PC/300. Consult with your local Brother sales Office for details.

6
LK3-B430E-, B431E-, B432E-, B433E- Mark II
Program No.
1
2
3
4
5
6
Sewing pattern No. of
stitches
21
28
28
35
42
45
Standard bar
tacking length
10mm
10mm
20mm
25mm
25mm
25mm
Standard bar
tacking width
0.3mm
0.3mm
0.3mm
0.3mm
0.3mm
0.3mm
2 . SPECIFICATIONS
[B431E Mark II]
Program No.
1
2
3
Sewing pattern No. of
stitches
21
28
35
Standard bar
tacking length
6mm
6mm
6mm
Standard bar
tacking width
2mm
2mm
2mm
[B432E Mark II]
[B433E Mark II]
This model has no standard patterns. You can use the BAS-PC/300 pattern software (sold separately) to create
the pattern, or consult your nearest BROTHER dealer.

7LK3-B430E-, B431E-, B432E-, B433E- Mark II
Machine installation should only be carried
out by a qualified technician.
Contact your Brother dealer or a qualified
electrician for any electrical work that may
need to be done.
The sewing machine head weighs more than
47 kg. The installation should be carried out
by two or more people.
Do not connect the power cord until installa-
tion is complete, otherwise the machine may
operate if the foot switch is depressed by mis-
take, which could result in injury.
Hold the machine head with both hands when
tilting it back or returning it to its original posi-
tion. Furthermore, after tilting back the ma-
chine head, do not push the face plate side
or the pulley side from above, as this could
cause the machine head to topple over, which
may result in personal injury or damage to
the machine.
All cords should be secured at least 25 mm
away from any moving parts. Furthermore,
do not excessively bend the cable or se-
cure it too firmly staples, otherwise there is
the danger that fire or electric shocks could
occur.
Be sure to connect the ground. If the ground
connection is not secure, you run the risk
of receiving a serious electric shock, and
problems with correct operation may also
occur.
Install the belt covers to the machine head
and motor.
CAUTION
3. INSTALLATION
3-1 . Power table
• Use the power table which has been specially
designed for each sewing machines.
* If using a commercially-available table, process
it as shown in the illustration below.
NOTE:
The thickness of the table should be at least 40 mm, and it should be strong enough to bear the weight and vibration of
the sewing machine.
If the distance A between the insides of the legs is less than 740 mm, move the control box installation position closer
to the motor (B = 247 mm).
Check that the control box is at least 10 mm away from the leg. If the control box and leg are touching, it could cause the
sewing machine to operate incorrectly.
B431E Mark II
Model code
127-V30-00001
127-V31-00001
Table/ legs
assembly
Model
B430E-, B432E-, B433E
Mark II
3. INSTALLATION
Motor
Control Box
2-ø3
depth 5
Counterbore
depth 23
Section A-A
Operation
panel cord
hole
LK3-B430E Mark II
LK3-B432E Mark II
LK3-B433E Mark II
b

8
LK3-B430E-, B431E-, B432E-, B433E- Mark II
Motor
Control Box
Counterbore depth 23
Section A-A
[B431E MarkII]
3. INSTALLATION
Operation
panel
cord hole

9LK3-B430E-, B431E-, B432E-, B433E- Mark II
q
w
e
r
y
u
q
e
Table
1mm
t
q
w
e
3-2 . Installing the motor Install the motor uto the work table with the four ac-
cessory bolts q, cushions w, cushion collars e, flat
washers r, spring washers t and nuts y.
At that time, fix by setting bolts q a little to the right
of oval hole on motor.
NOTE:
Tighten the nuts yso that the clearance between the table
and the cushion collars eis approximately 1 mm.
3-3 . Installing the motor pulley Place the motor pulley q onto the shaft of the motor
w so that the key groove is aligned, and then tighten
the set screw e so that the center of the V groove in
the motor pulley q is aligned as closely as possible
with the center of the belt hole in the power table.
3. INSTALLATION

10
LK3-B430E-, B431E-, B432E-, B433E- Mark II
!0
!1
!2
w
eq
o
i
u
y
t
r
t
u
i
o
y
Table
Cushion collars
Nuts
Flat washers
Rubber collers
3mm
!3
3-4 . Installing the control box
1. Remove the 12 screws q, and then open the covers (panel mounting assembly w and main P.C. board
mounting plate e).
NOTE:
When opening the cover, hold it securely so that it does not fall down.
2. Install the control box with the four accessory bolts r, cushions t, cushion collars y, rubber collars u,
flat washers i and nuts o as shown in the illustration above. At this time, leave a gap of approximately
3 mm between the work table and the top of the box.
* Use two nuts oat each installation location, and make sure that both nuts are tightened.
3. Close the covers (panel mounting assembly w and main P.C. board mounting plate e), and tighten them
with the screws q.
* The main P.C. board mounting plate e will be opened again during “3-13. Connecting the cords”, so
provisionally tighten it with the screw q.
4. Install the power switch !0 with the two screws !1.
5. Secure the power switch cord with the three staples !2.
6. Pass the motor cord through the cord hole !3.
3. INSTALLATION
LK3-B430E Mark II
LK3-B432E Mark II
LK3-B433E Mark II
Cushions
r
!0
t
y
u
i
o
q
e
w
!1
!2
[LK3-B431E Mark II]

11 LK3-B430E-, B431E-, B432E-, B433E- Mark II
3-5. Installing the rubber cushions
3-6 . Installing the oil pan
3-7 . Installing the cushions
Install the rubber cushions q with the nails w.
1. Insert the tabs of the oil pan w into the holes for
the cushions q, and then secure it in place with
the five nails e so that the oil pan w is not at an
angle.
2. While pushing the oil pan w down from above,
screw in the oil container r.
Place the two cushions qinto the holes in the work
table so that the notches are aligned with the tabs in
the oil pan, and secure them in place with the nails w.
3. INSTALLATION
w
w
e
q
r
w
q
q

12
LK3-B430E-, B431E-, B432E-, B433E- Mark II
y
u
q
wq
3-8 . Installing the machine head
1. Insert the head hinges q into the machine head so that they are parallel, and then secure them with the
two set screws w.
2. Place the machine head gently on top of the rubber cushions e and cushions r.
NOTE:
Pull the cords t out as shown in the illustration above in order to prevent them from being clamped by the machine
head.
3. Install the hinge presser y with the two screws u.
3-9 . Installing the head rest Tap the head rest q into the table hole.
NOTE:
Tap the head rest securely into the table hole.
3-10 .Installing the liquid cooling tank, optional
1. Remove the rubber plug, and then push the liquid
cooling tank q.
2. Tighten it with the set screw w.
3. INSTALLATION
w
e
q
r
t
66
13
17

13 LK3-B430E-, B431E-, B432E-, B433E- Mark II
Be sure to connect the ground. If the ground connection is not secure, you run the risk of receiv-
ing a serious electric shock, and problems with correct operation may also occur.
t
e
w
r
w
r
q
e
t
q
CAUTION
Table
Table
Red
White
Black
Yellow/Green
3-11 . Installing the operation panel
1. Install the rear frame qto the work table (top or bottom) with the four wood screws w.
2. Install the front frame eto the rear frame qwith the four screws r.
* The vertical orientation of the front frame eis the same whether it is installed to the top or the bottom of
the work table.
3. Insert the connector cord tinto the control box through the hole at the side of the box. Refer to “3-13.
Connecting the cords” for details on connecting the cord.
4. Secure the connector cord twith the staples (in three places).
3-12 . Connecting the ground wire
Connect to the power switch. However, the
black wire is insulated to the inside of the box
and is not used.
3. INSTALLATION
The operation panel can be installed to either the top or bottom of the work table.
Top of work table Bottom of work table
Connect to ground

14
LK3-B430E-, B431E-, B432E-, B433E- Mark II
Connection location
X, Y, Sewing sensor
Synchronizer
Machine specification
select connector
Thread take-up
solenoid*
Presser solenoid
Thread trimmer solenoid
Pulse motor, Y
Pulse motor, X
Operation panel
Upper shaft motor
No. of pins
12-pin
5-pin
8-pin
5-pin
4-pin
4-pin (blue)
4-pin
26-pin
3-pin
Cord mark
z
x
c
v
b
n
m
None
None
Connection location on circuit board
P1 (ORG2)
P2 (SYNCHRO)
P3 (SELECT)
P4 (SOL2)
P5 (SOL)
P6 (YPM)
P7 (XPM)
P8 (PANEL)
P11 (UVW)
Machine head connectors
w
q
!1
!0 r
P11 P7
P6
P5
P4 e
P3
P2
P1
P8
!3
!2
q
o
u
i
y
t
* Provided as an option for B430E Mark II-2 and B433E Mark II-2 specifications. In addition, the
B432E Mark II also has a movable solenoid connected.
3-13 . Connecting the cords
1. Gently tilt back the machine head.
NOTE:
After tilting back the machine head, do not push the face side or the pulley side from above.
2. Pass the cords q through the hole w in the work table.
3. Gently return the machine head to its original position.
4. Remove the six screws e, and then open the control box cover (main P.C. board mounting plate r).
NOTE:
When opening the cover, hold it securely so that it does not fall down.
5. Loosen the two screws t,and then open the cord presser plate y in the direction of the white arrow and
pass the cords q through the opening.
6. Loosen the screw o, and then attach the ground cord ufor the machine head and the ground cord ifor
the operation panel as shown in the illustration.
7. Loosen the screw !1, and then attach the ground cord !0 for the upper shaft motor as shown in the illustra-
tion.
8. Securely connect connectors P1 to P8 and P11 as indicated in the table.
9. Secure the cords q with the cord clamps !2 and !3.
10. Close the cord presser plate yin the direction of the black arrow, and secure it by tightening the screws t.
NOTE:
Check that the cords do not get pulled when the machine head is tilted back gently.
11. Tighten the cover (main P.C. board mounting plate r) with the six screws e.
3. INSTALLATION