JUKI MEB-3810N Series User manual

COVERI
MEB-3810N
INSTRUCTION MANUAL

CONTENTS
1. SPECIFICATIONS.............................................1
2. NAME OF EACH COMPONENT ......................2
3. INSTALLATION.................................................3
3-1. Table.............................................................................3
(1) Drawing of the stand....................................................... 3
(2) Drawing of the table(Table-xed type) .......................... 4
(3) Drawing of the table (Semi-sunken type)...................... 5
3-2. Installing the control box ...........................................6
3-3. Installing and connecting the power switch ............ 6
3-4. Taking out the sewing machine................................. 8
3-5. Installing the sewing machine................................... 9
(1) In the case of the table-xed type machine head......... 9
(2) In the case of the semi-sunken type machine head....11
3-6. Raising and returning the sewing machine............ 16
3-7. Installing the poly oiler............................................. 19
3-8. Installing the operation panel.................................. 19
3-9. Installing the regulator and the manifold ............... 20
3-10. Connecting the cords............................................. 22
3-11. Handling the cords..................................................23
3-12. Installing the foot pedal switch (optional)............ 24
3-13. Connecting the air supply...................................... 25
(1) Connecting the regulator and the manifold................ 25
(2) Connecting the air tubes .............................................. 26
3-14. Installing the air hose............................................. 27
3-15.
Cautions for the compressed air supply (source
of supply air) facility................................................. 28
3-16. Installing the thread stand .....................................29
3-17. Installing the thread guides ...................................30
3-18. Installing the eye protection cover and the
nger guard ............................................................. 31
3-19. Installing the cloth chip bag ..................................32
3-20. Installing/removing the presser unit..................... 33
4. PREPARATION BEFORE OPERATION.........34
4-1. Lubrication of the machine and how to lubricate.. 34
(1) Lubricating the arm oil tank ......................................... 34
(2) Lubricating the bed oil tank ......................................... 34
(3) Lubricating the looper and spreader components .... 35
(4) Lubricating the looper bracket oil tank....................... 35
(5) Lubricating the needle bar and the gear section ....... 36
4-2. Attaching the needle................................................. 37
4-3. Threading the machine head ...................................38
(1) Threading the upper thread (needle thread)............... 38
(2) Threading the lower thread (looper thread)................ 39
(3) Threading the machine with gimp ............................... 40
4-4. How to set the cloth on the sewing machine ......... 40
5. STRUCTURE OF THE OPERATION
SWITCH ..........................................................41
5-1. Structure of the operation panel ............................. 41
5-2. Temporary stop switch.............................................43
5-3. Hand switch............................................................... 43
5-4. Foot switch (optional)............................................... 43
6. HOW TO USE THE OPERATION PANEL ......44
6-1. Basic operation of the sewing machine ................. 44
6-2. Setting the thread tension........................................ 44
6-3. Temporarily stopping the sewing machine ............ 45
6-4. Performing re-sewing............................................... 46
6-5. Performing threading ...............................................47
6-6. How to use the counter ............................................47
6-7. When dropping of the knife is temporarily not
desired .....................................................................48
6-8. Changing the operation mode................................. 48
6-9. Changing procedure of the sewing pattern............ 50
6-10. Conrming the pattern shape................................ 50
7. SETTING PROCEDURE OF THE SEWING
DATA ...............................................................51
7-1. Setting the knife No. .................................................52
7-2. Setting the cut length ...............................................52
7-3. Setting the cut-before/cut-after knives ................... 53
7-4. Setting the number of stitches of the parallel
section...................................................................... 53
7-5. Setting the number of stitches of the eyelet .......... 53
7-6. Setting the cut space................................................ 54
7-7. Setting the eyelet space........................................... 54
7-8. Knife position compensation................................... 54
7-9. Number of stitches of sewing end compensation. 55
7-10. Turning angle compensation ................................. 55
7-11. Turning angle compensation at the parallel sec-
tion............................................................................ 55
7-12. Compensation of eyelet in lateral direction ......... 56
7-13. Compensation of eyelet in longitudinal direction 56
7-14. Compensation of eyelet, left in longitudinal
direction ...................................................................56
7-15. Compensation of left parallel section of a but-
tonhole .....................................................................57
7-16. Compensation of cutting space, left..................... 57
7-17.
Setting the needle throwing width of the
right bottom of eyelet .........................................57
7-18. Setting the needle throwing width of the left
bottom of eyelet .................................................58
7-19. Setting the needle throwing width ........................ 58
7-20. Setting the type of bartack..................................... 58
7-21. Setting the length of taper bar............................... 59
7-22. Setting the number of stitches of taper bar ......... 59
7-23. Setting the offset of taper bar................................ 59
7-24. Setting the number of stitches of slant section
of taper bar .............................................................. 60
7-25. Compensation of the number of stitches of the
right side taper bar.................................................. 60
7-26. Setting the straight bar length............................... 60
7-27. Setting the number of stitches of straight bar..... 61
7-28. Setting the overlapping amount of straight bar... 61
7-29. Setting the needle throwing width of straight bar61
7-30. Setting the number of stitches of round bar........ 62
7-31. Setting the number of overlapping stitches of
round bar 2 .............................................................. 62
7-32. Setting the needle throwing width of the round
bar............................................................................. 62
7-33. Setting the needle throwing width at the upper
section of eyelet bar ............................................... 63
7-34. Setting the reduced sewing speed for straight/
round bar ................................................................. 63
7-35. Setting the sewing speed....................................... 63
7-36. Setting the reduction speed of eyelet................... 63
i

7-37. Setting the soft start............................................... 64
7-38.
Setting the number of stitches at the beginning of
sewing of thread tension .................................................. 64
7-39. Setting the number of stitches at the end of sew-
ing of thread tension ................................................. 64
8. ADJUSTMENT OF EACH PART ....................65
8-1. Adjusting the pressure of the cloth trimming
knife..........................................................................65
8-2. Adjusting the stitch bite width................................. 66
8-3. Adjusting the presser ...............................................67
8-4. Adjusting the presser opening amount .................. 68
8-5. Adjusting the needle thread drawing amount........ 69
8-6. Adjusting the thread take-up thread guide............. 69
8-7. Adjusting the remaining amount of the gimp......... 70
8-8. Adjusting the gimp thread tension.......................... 70
8-9. Needle thread clamp unit (optional)........................ 71
8-10. Adjusting the brightness of the hand lamp.......... 72
9. HOW TO USE THE VARIOUS FUNCTIONS ..73
9-1. Operating procedure of thread tension compensa-
tion of each section ................................................... 73
9-2. Changing the setting position of cloth ................... 76
9-3. Changing over the mode of the start switch.......... 76
9-4. Changing over the presser movement ................... 76
9-5. Changing over the counter (DOWN counting) ....... 76
9-6. Changing over to the mode of the stop before
cloth cut ................................................................... 76
9-7. Copying the pattern data.......................................... 77
9-8. Deleting the pattern data.......................................... 78
10. MAINTENANCE............................................79
10-1. Looper thread trimming (overall thread trimmer
type).......................................................................... 79
10-2. Timing between the needle and the looper .......... 79
10-3. Height of the needle bar......................................... 82
(1) Adjusting the needle bar height................................... 82
(2) Reference height of the needle bar ............................. 82
10-4. Adjustment to prevent triangular stitch skip-
ping in the case of a narrow needle throwing
width.........................................................................83
10-5. Clearance between the needle and the looper..... 84
10-6. Adjusting the needle guard.................................... 84
10-7. Clearance between the spreader and looper
and the opening timing of the spreader................ 85
10-8. Height of the throat plate ....................................... 87
(1) Height of the throat plate.............................................. 87
(2) Adjusting the height of the throat plate ...................... 87
10-9. Position of the presser foot ...................................88
10-10. Adjusting the knife dropping position ................ 88
10-11. Installing position of the needle thread trim-
ming knife ................................................................ 89
10-12. Cleaning................................................................. 90
10-13. Draining ................................................................. 90
10-14. Replacing consuamables..................................... 91
(1) Worn-out of the hammer face ...................................... 91
(2) Replacing the cloth cutting knife and the hammer.... 92
(3) Replacing the looper thread trimming knife (overall
thread trimmer type) ..................................................... 93
(4) Replacing the needle thread trimming knife .............. 94
(5) Changing the thread trimmer retaining plate (needle
thread trimmer type) ..................................................... 94
(6) Standard of replacing time of the gas spring............. 94
(7) Replacing the gas spring ............................................. 95
11. EXCHANGING GAUGE PARTS AND OP-
TIONAL ...........................................................96
11-1. Throat plate..............................................................96
11-2. Presser set............................................................... 96
11-3. Presser holding plate..............................................97
11-4. Cloth cutting knife................................................... 97
11-5. Hammer.................................................................... 98
11-6. Others.......................................................................98
12. TROUBLES AND CORRECTIVE MEA-
SURES IN SEWING........................................99
13. MEMORY SWITCH .....................................101
13-1. Operating procedure ............................................101
13-2. Memory switch list................................................ 102
14. ERROR LIST...............................................104
15. STANDARD PATTERN LIST ......................107
16. SEWING DATA ENTRY SHEET..................108
ii

– 1 –
1. SPECIFICATIONS
Specications J type C type
1 Application Jeans Cotton pants, working pants
2Operating temperature
range 5°C to 35°C
3 Operating humidity range 35 % to 85 % (with no condensation)
4Number of patterns that
can be stored in memory 99 (1 to 99) (standard patterns have been factory-numbered 90 to 99)
5 Input power Single-/3-phase 200 to 240 V 50/60 Hz
Supply voltage uctuation: Rating ± 10 %
6Sewing speed 400 to 2,500 sti/min (in 100 sti/min steps)
7 Thread trimmer type Needle thread
trimmer type (00)
Overall thread
trimmer type (01)
Needle thread
trimmer type (00)
Overall thread
trimmer type (01)
8 Sewing length 10 to 38 mm 10 to 34 mm 10 to 38 mm 10 to 34 mm
9 Buttonhole length 10 to 38 mm *1 10 to 28 mm 10 to 38 mm *1 10 to 28 mm
10 Needle throwing width 2.0 to 4.0 mm (factory-setting at the time of delivery: 2.5 mm)
[1.5 to 5.0 mm by compensation on the feed panel]
11 Length of buttonhole with
taper bar 3 to 15 mm *2
12 Lift of presser foot Standard 13 mm
13 Change of stitch shape Selection by program
14 Buttonhole cutting Cut-before knife + Cut-after knife, without knife
15 Cloth cutting knife drive
method Driven by air cylinder
16 Feed method Intermittent feed by stepping motor
17 Needle used DO x 558 Nm90 to 120 (Needle count attached at the time of delivery: Nm110)
18 Safety device Pause switch & automatic stop function at the time of detection of a trouble
19 Lubricating oil JUKI MACHINE Oil No. 18
20 Air pressure Main regulator: 0.5 MPa
Hammer pressure regulator: Standard 0.35 MPa (max. 0.4 MPa)
21 Air consumption 49.5 ℓ/min (11.6 cycles/min)
22 Machine dimensions
Machine head: 382 mm (width) x 656 mm (length) x 584 mm (height)
Complete unit (Table-xed type)
: 1050 mm (width) x 700 mm (length) x 1248 mm (height) *3 (excluding the thread stand)
Complete unit (Semi-sunken type)
: 1060 mm (width) x 790 mm (length) x 1096 mm (height) *3 (excluding the thread stand)
23 Power consumption 200 VA
24 Mass Machine head: Approx. 110 kg; Operation panel: Approx. 0.3 kg
Control box: Approx. 4.5 kg
25 Noise
-
Equivalent continuous emission sound pressure level (LpA) at the workstation :
A-weighted value of 82.0 dB; (Includes KpA = 2.5 dB); according to ISO 10821-
C.6.3 -ISO 11204 GR2 at 2,500 sti/min for the sewing cycle, 3.8 sec. (Pattern :
No.90).
- Sound power level (LWA) ;
A-weighted value of 92.5 dB; (Includes KWA = 2.5 dB); according to ISO 10821-
C.6.3 -ISO 3744 GR2 at 2,500 sti/min for the sewing cycle, 3.8 sec. (Pattern :
No.90).
*1 : For the machine provided with the optional needle thread clamp unit, the buttonhole length is 10 to 28 mm.
*2 : Parallel section: Taper length can be set to such a value that does not exceed the total of the eyelet section and the
bartacking section.
*3 : The height of the completed unit differs with the height of the table stand.

– 2 –
2. NAME OF EACH COMPONENT
❶Temporary stop switch
❷Presser switch
❸Start switch
❹Operation panel
❺Control box
❻Power switch
❼Hand pulley
❽Machine head
❾Thread stand
󱢳Feed base
• Hand pulley ❼
The needle bar can be lifted or lowered by hand
with the hand pulley.
❶
󱢳
❹
❺
❻
❼
❽
❾
❷
❸
❼

– 3 –
3. INSTALLATION
DANGER :
1. The sewing machine should be installed by a trained technician.
2. Contact the distributor or a professional electrician to ask him/her to carry out electric wiring.
3. The sewing machine has a mass of approximately 110 kg. Four or more workers are required
to carry out the installation of the sewing machine and adjustment of the table height.
4. Never connect the power plug until the installation of the sewing machine is completed in order
to protect against an accident due to an abrupt startup of the sewing machine.
5. Be sure to ground the earthing wire in order to protect against an accident due to electrical
leakage.
6. Be sure to raise/return the sewing machine from/to its home position by holding it with both
hands.
7. Do not apply an unreasonable force to the sewing machine when it is in the raised position. If
such a force is applied, the sewing machine can lose its balance to fall alone or fall together
with the table, resulting in personal injury or sewing-machine breakage.
3-1. Table
• Use the table and stand which are able to withstand the sewing machine mass (110 kg) and vibration. The
table thickness of which is 40 - 60 mm should be used.
• Use the table stand which has an appropriate height for the sake of the operator's ease of use.
• The xing bolt for xing the table and the stand should be of the length which matches the thickness of the
table.
• The table differs between the table-xed type and the semi-sunken type machine heads. Appropriately
machine the table referring to the table drawing corresponding to the type of the machine head.
(1) Drawing of the stand
500
（630～965）
（715）
1. In the case the table thickness exceeds 60 mm, the length of the bolts supplied with the unit as
accessories is adequate.
2. In the case the xing bolt for xing the table and the stand is too long for the table thickness,
unexpected injury to hands or head can occur.

– 4 –
(2) Drawing of the table(Table-xed type)
A 2×ø4.5±0.5 depth 30 B 2×ø4.5±0.5 depth 30 C 2×ø3.5±0.5 depth 30 (on the bottom surface)
D 4×ø2.5±0.5 depth 30 E 2×ø4.5±0.5 depth 30 F 2×ø4.5±0.5 depth 30
G 2×ø3.5±0.5 depth 30 (on the bottom surface) HR2 (all corners) IRight side
Z Z ZZ
ZZ
Z-Z
ZZ
(4箇所)
4
X
Ø9
680
56 75
118 149 175
260 330 530 555 595 598
615
730
320±1
250±1
70±1
500±1.5
30±2
116±4
56±1
55±1
80±1
277±3.5
80±1
(30°)
60°±5°
109±1
48.5±1
670
80
50
365
370
410
490
570
670
895
907.5
915
928
1000
1050
40
530
(4X
Ø9)
4X
Ø
26
+0.1
0
30°
4X
486±3.5207±3.5
2X( Ø17)
2X Ø32
50±4
368 ±1
385 ±1
254±3.5
254±3.5
1 4X
+0.1
0
2
Ｘ（R)
50±4
Ø
100
±5
Ø
4
Ｘ
Ø13
17
+2
-1
Ø
17
+2
-1
Ø
2Ｘ
Ø6
2Ｘ
Ø6
2Ｘ
Ø6
23
+2
-1
Ø
4X
Ø9
90±4
715±3
68±1
252±1
50
±1
3±1
8±1
10±1
4X( Ø9)
4X Ø26
4X Ø50
4X( Ø13)
2X( Ø6)
2X( Ø6)
2X Ø12
2X Ø12
2X( Ø6)
2X Ø12
A
E
I
C
G
B
F
D
H
H
Z-Z
(4 locations)

– 5 –
(3) Drawing of the table (Semi-sunken type)
Note) When no instruction is given, the corner radius shall be R5.
99 ±1
170
±1
80 ±1
610 ±2
165 ±2 80 ±1
480
905
885
225
122.5
1060
898
1010
50
760
872
225
170
±1
170
±1
45
40±1
13
80 ±1
8
R
8
R
30
R
30
R
20
R
20
R
20
R
20
R
30
R
30
R
20
R
20
R
20
R
20
R
20
R
20
R
8
R
8
R
8
R
8
R
8
R
8
R
8
R
8
R
8
R
238 323
461
740
145±3
740
138
790
231
7 ±0.5
Y-Y
(2カ所)
7 ±0.5
Z-Z
(2カ所)
ZZ
ZZ Y Y
YY
61 ±2
170
±1
168
±1
83 ±2
214
±1
125 ±2
70
167
±2
199
±2
176
±2
241
±2
173
±2
61 ±2
21 ±1
37±2
320 ±1
41 ±1
385 ±1.5
500 ±1.5
44±144±1
297±3
167
±2
199
±2
214
±1
241
±2
253
±2
176
±2
173
±2
170
±1
56
±1
116
±4
55±1
715
±3
20 ±1
170
±1
109±1
48.5±1
18 ±1
18 ±1
37 ±1
60°±5°
A
E
JI
C
G
B
F
D
H
H
K
L
M
In the case the semi-sunken type machine head is used, the kit for semi-sunken type (part number : 40157881)
is required. Prepare the kit simultaneously with the table.
A4×9 drilled hole
26 Depth of coun- terbore 1+ 1
0
B4×8 drilled hole 22
Depth of counter- bore 1+ 1
0
C4×9 drilled hole
26 Depth of coun- terbore 1+ 1
0
D4×2.5±0.5 drilled
hole,depth 20±3
E4×8 drilled hole
22 Depth of coun- terbore 1+ 1
0
F2×6 drilled hole
12 Depth of coun- terbore 1+ 1
0
G2×3.5±0.5 drilled
hole,depth 20±3 (on the bottom surface)
HR2 (all corners)
IRight side
J17 drilled hole
K17 drilled hole L8×10 drilled hole M30 drilled hole N2×6 drilled hole
12 Depth of coun- terbore 1+ 1
0
In the case the semi-sunken type machine head is used, the table reinforcing plate (part number:
32080707）(supplied with the kit (part number: 40157881)) has to be installed without exceptions.
(Refer to "3-5.(2) ① Installing the table reinforcing plate" p. 11.)
N
Z-Z
(2 locations)
Y-Y
(2 locations)

– 6 –
3-2. Installing the control box
Install control box ❶to the location illustrated in the
gure using four bolts ❷, four plain washers ❸and
four spring washers ❹and four hexagonal nuts ❺
supplied with the unit.
1. Install control box ❶30 mm or more
away from the stand. If control box ❶is
located too close to the stand, the for-
mer can get hot or the sewing machine
can malfunction.
2. In the case the semi-sunken type ma-
chine head used, install the control box
after carrying out the procedure written
in "3-9. Installing the regulator and the
manifold" p. 20.
3-3. Installing and connecting the power switch
1) Installing the power switch
Fix power switch ❶on the underside of the table with
two wood screws ❷.
30 mm or more
Bolt ❷ is a cup head square neck bolt (M8;
Length: 70 mm) and nut ❺ is a hexagonal
nut (M8).
In the case the semi-sunken type machine
head used, install the control box after
carrying out the procedure written in "3-9.
Installing the regulator and the manifold"
p. 20.
Wood screw ❷has the nominal diameter of
5.1 mm and a length of 20 mm.
❶
❷
❶
❸
❷
❹
❺

– 7 –
Brown
Brown
Light blue
Light blue
Light blue
Green/Yellow
– GND
Green/
Yellow
Plug
Power source cord
Power switch
• Connecting single phase 200V to 240V
White
AC200 to AC240 V
• Connecting three phase 200V to 240V
Red White
Black
Table
Control box
Black
Red
Green/
Yellow
Brown
Green/Yellow
– GND
Red
Green
PlugControl box
Green/
Yellow
Black
White
Power switch
Table
Never use the machine unless the voltage specications described on the power indicator label
are satised.
2) Connecting the power cable
Power source cord
Power switch side
Plug side
Power switch side
Plug side
Rating plate
Voltage specications are shown on the power indication tag attached on the power cable and on the rating
plate adhered on the power box. Connect the cable which matches the specications.
Power indication tag
(For example: In the case of 200V)
AC200 to AC240 V

– 8 –
DANGER :
1. The sewing machine should be taken out by a trained technician(s).
2. The sewing machine has a mass of approximately 110 kg. Four or more workers are required
to take out the sewing machine.
3. Do not apply an unreasonable force to the sewing machine until the installation of the sewing ma-
chine is completed. If such a force is applied, the sewing machine can lose its balance and can fall
alone or together with the table, resulting in personal injury or sewing-machine breakage.
4. Never connect the power plug until the installation of the sewing machine is completed in order
to protect against an accident due to an abrupt startup of the sewing machine.
3-4. Taking out the sewing machine
1) Remove accessory boxes ❶and ❷in the direction
of the arrow.
2) Remove upper foam polystyrene ❸in the direction
of the arrow.
3) Remove the right and left intermediate foam poly-
styrene ❹and ❺in the direction of the arrow.
Place a cardboard sheet or packing material between
the oor and the sewing machine in order to avoid
damaging the oor and to prevent the cords from
being pinched between the INT cover and the oor.
4) Take out the sewing machine from the package, by four workers, holding the portions illustrated in the gure.
Place it on the oor.
Cord
INT cover
❸
❹❺
❶
❷

– 9 –
3-5. Installing the sewing machine
WARNING :
The sewing machine has to be carried by four or more workers.
Carry out the installation work on a level place.
1) Remove the paper liners from four bolt rubbers B
❶. Place and adhere the liners over the holes in
the table. (Place the bolt rubber B with its convex
side faced downward.)
❶
❶
Under-
side Paper
liner
Air tube
2) Place the sewing machine on
the top surface of the table in
such a way that the concave
sections Aof the bottom cover
t on bolt rubbers B ❶.
3) Remove four setscrews ❾.
Remove INT cover 󱢳.
4) Put air tubes and cords coming
from the sewing machine head
into the hole in the table.
5) Install INT cover 󱢳with four
setscrews ❾.
1. Lift the sewing machine head with four or more people by holding the sections marked with
dotted circle as shown in the gure.
2. Do not hold the underside of hinge stopper, bottom cover, and feed base.
Hinge stopper
Bottom cover
Feed base
1)
2)
3) 4) 5)
Cord
(1) In the case of the table-xed type machine head
A
❾
󱢳
❾
󱢳
❾
❾

– 10 –
6) Remove machine head xing bolts ❽. Raise the
sewing machine to the 1st step of the hinge stop-
per.
When raising the sewing machine, refer to "3-6.
Raising and returning the sewing machine" p.
16.
WARNING :
Do not raise the sewing machine above
the 1st step of the hinge stopper.
If it is raised above the 1st step, the sew-
ing machine can fall, resulting in personal
injury or sewing machine breakage.
7) Open front cover ❷. Insert a bolt ❸, a washer ❹
and a bolt rubber ❺from the right front side of the
sewing machine, and temporarily x them with a
bolt rubber ❺a washer ❹, a packing ❼and two
nuts ❻.
8) Be sure to raise the sewing machine to the fourth
step of the hinge stopper.
Fix the sewing machine with remaining three bolts
❸, six washers ❹, six bolt rubbers ❺, three pack-
ings ❼and six nuts ❻.
9) Remove bolt ❸and two nuts ❻which have been
used for temporarily xing.
WARNING :
If your body comes in contact with the
corner section of connector cover ❾of
the lateral-direction motor during work,
unexpected injury can be caused. Be sure
to keep away from the corner section of
the connector cover.
10) Attach bolt ❸and two nuts ❻removed in the
above step of procedure in the reverse direction
and x them.
Fix bolt ❸and nuts ❻in such a state that
bolt rubber ❺ is slightly squeezed.
1. Keep machine head xing bolt ❽since
it is necessary when moving the sewing
machine. Whenever you move the sew-
ing machine, be sure to install the head
xing bolt in place.
2. Bolt ❸ is an M8 hexagon socket head
bolt (length: 85 mm). Nut ❻is an M8 one.
6), 7)
8) to 10)
❽
❺
❹
❼
❹
❺
❻
❸
❷
❸
❼
❹
❺
❻
❺
❹
❼
❻
❹
❻
❹
❺
❸
❹
❺
❺
❹
❸
❻
❻
❼
❺
❸

– 11 –
① Installing the table reinforcing plate
1) Fix two table reinforcing plates ❷on the table ❶with eight bolts ❸, eight plain washers ❹, eight spring
washers ❺and 16 nuts ❻.
The bolt ❸ is M6 carriage bolt length of which is 60 mm. The dimensions of the plain washer ❹are
"φ12.5 xφ6.4 x t1.6". Spring washer ❺is for M6 and nut ❻is M6 (class 1).
Bolts ❸, plain washers ❹, spring washers ❺and nuts ❻ are supplied with the kit for semi-sunken
type machine head (part number: 40157881).
(2) In the case of the semi-sunken type machine head
② Assembling the bottom cover stay (front)
1) Remove paper liners ❸from two bottom rubbers
B ❶ and afx them on bottom cover stay ❷.
* Afx two right-side bottom rubbers B ❶ with shifted
to the left side (in the direction of the arrow) with
respect to slot Ain bottom cover stay ❷.
Bolt rubber B ❶ is the head accessories. In addition, bottom cover stay ❷ are supplied with the kit
for semi-sunken type machine head (part number: 40157881).
1. Insert bottom rubbers B ❶ into the respective holes in bottom cover stay ❷while holding them
so that their projecting side is faced downward.
2. Carefully check the location of mounting holes in left-side bottom rubbers B ❶.
③ Assembling the bottom cover stay (rear)
1) Remove paper liners ❸from two bottom rubbers
B ❶ and afx them on bottom cover stay ❷.
* Afx two right-side bottom rubbers B ❶ with shifted
to the right side (in the direction of the arrow) with
respect to slot Ain bottom cover stay ❷.
❷
❶
❶
⇦
❷
❶❶
⇦
AA
❶
❸
❸
❷
❺
❹
❻
❸
❷
❶
Under-
side
Paper
liner Under-
side
Paper
liner

– 12 –
④INSTALLATION
1) Place table ❶, bottom cover stay (front)
❷and bottom cover stay (rear) ❸ on the
oor.
2) Align bottom cover stay mounting hole A
in table ❶with mounting holes Bfor the
respective bottom cover stays.
3) Put the machine head on the bottom cover
stays.
At this time, put the machine head in such
a way that bottom rubber B ❹ ts in de-
pressed portions Cin bottom cover ❺.
At this time, the distance between
the respective bottom cover stays
must be 309 mm, and the distance
between bottom cover stay (rear) ❸
and table ❶must is 81 mm.
❸
❷
❶
309mm
81mm
❸
❷
B
A
❶
❺C
❹
❺

– 13 –
❾
4) Lifting table ❶, join table ❶, bottom cover
stay (front) ❷ and bottom cover stay (rear)
❸ with eight bolts ❾, eight plain washers
󱢳, eight spring washers 󱢴 and 16 nuts
󱢵.
The bolt ❾is M8 carriage bolt length
of which is 70 mm. The dimensions
of the plain washer 󱢳 are "φ30
xφ8.5 x t2". Spring washer 󱢴is for
M8 and nut 󱢵is M8 (class 1).
Bolts ❾, plain washers 󱢳, spring
washers 󱢴and nuts 󱢵 are sup-
plied with the kit for semi-sunken
type machine head (part number:
40157881).
1. Lift the sewing machine head with four or more people by holding the sections marked with
dotted circle as shown in the gure.
2. Do not hold hinge stopper ❻, bottom ❺ of bottom cover D and depressed portion Eon the
side face.
3. When putting the machine head on the bottom cover stays, carefully prevent handle ❼ and INT
cover ❽ from coming in contact with table ❶. In addition, do not place the wiring and piping
between INT cover ❽ and table ❶.
❶
❼
󱢴
󱢳󱢵
❾❶
❶❽
❻
D
E
❺
E
❺
Wiring, piping

– 14 –
5) Holding table ❶ at its four corners with
four or more workers, place it on assem-
bled table stand 󱢶 and x with four bolts
󱢷, four plain washers 󱢸, four spring
washers 󱢹and four nuts 󱢺.
6) Remove machine head xing bolts 󱢻.
Raise the sewing machine to the 3rd step
of the hinge stopper.
When raising the sewing machine, refer to
"3-6. Raising and returning the sewing
machine" p. 16.
7) Secure the machine head by xing two
bolts 󱢼, two packings 󱢽, four plain wash-
ers 󱢾, four bolt rubbers 󱢿 and four nuts 󱣀
at two locations on this side of the sewing
machine.
Bolt 󱢷is carriage bolt with 18 5/16
threads and is 70 mm long. Plain
washer 󱢸 is of "φ18 xφ8.5 x t1.6".
Spring washer 󱢹 is of "φ15 x φ9 x
t2". Nut 󱢺 has 18 5/16 threads.
Bolt 󱢷, plain washer 󱢸, spring
washer 󱢹, nut 󱢺 is the head acces-
sories.
1. Lift the table ❶has to be carried
by four or more workers.
2. Lift the table ❶ while keeping it
in a horizontal position without
tilting.
Fix bolt 󱢼and nuts 󱣀in such a
state that bolt rubber 󱢿 is slightly
squeezed.
󱢿
󱢾
󱢿
󱢾
󱣀
󱢽
󱢼
󱢻
󱢶
󱢷
❶
󱢷❶
󱢹󱢸
󱢺

– 15 –
8) Raise the sewing machine to the 4th step
of the hinge stopper.
When raising the sewing machine, refer to
"3-6. Raising and returning the sewing
machine" p. 16.
9) Secure the machine head by xing two
bolts 󱢼, two packings 󱢽, four plain wash-
ers 󱢾, four bolt rubbers 󱢿and four nuts 󱣀
at two locations on far side of the sewing
machine.
Fix bolt 󱢼and nuts 󱣀in such a
state that bolt rubber 󱢿 is slightly
squeezed.
1. Keep machine head xing bolt 󱢻 since it is necessary when moving the sewing machine. When-
ever you move the sewing machine, be sure to install the head xing bolt in place.
2. The bolt 󱢼 is M8 hexagon socket head screws of which is 50 mm. The dimensions of the plain
washer 󱢾 are "φ30 xφ8.5 x t2" and nut 󱣀is M8 (class 3).
Bolt 󱢼, packing 󱢽 plain washer 󱢾, bolt rubber 󱢿, nut 󱣀 is the head accessories.
10) Secure tray 󱣁on bottom cover stay (front)
❷with three setscrews 󱣂.
Setscrew 󱣂is an M4 round head
screw with washer and has a length
of 12 mm.
Tray 󱣁and setscrews 󱣂 are sup-
plied with the kit for semi-sunken
type machine head (part number:
40157881).
󱣁
󱣂
❷
󱣀
󱢿
󱢾
󱢽
󱢼
󱢾
󱢿

– 16 –
DANGER :
1. Do not lift the sewing machine for any purpose other than for installation, repair or adjustment
in order to prevent accidents resulting in personal injuries due to pinching. In addition, the
sewing machine has to be lifted for repair or adjustment only by a maintenance technician
who is familiar with the machine.
2. If you nd the sewing machine is too heavy to lift, the gas spring may have malfunctioned
due to outgassing.
Never lift the sewing machine in such a state since the machine can drop to pinch hands,
ngers and arms resulting in serious injury.
* Carefully read the description given in "10-14. (6) Standard of replacing time of the gas spring"
p.94 and "10-14. (7) Replacing the gas spring" p.95.
3. Be sure to carry out the work while strictly observing the following in order to protect against
serious injury to hands, ngers and/or arms due to pinching in the relevant parts of the sewing
machine.
• Be sure to hold the sewing machine by the ribs located on the front side of the bed.
• Be sure to securely x the sewing machine in the raised position by locking the hinge stopper.
4. Do hole hold any part other than the ribs located on the front side of the bed.
5. If you raise the sewing machine with the feed base remained this side, the feed base can move
to pinch hands and ngers resulting in an unexpected injury.
3-6. Raising and returning the sewing machine
The sewing machine can be raised/returned to/from four different heights.
1st step 2nd step
3rd step 4th step
WARNING :
When raising/returning the sewing machine from/to its home position, check to be sure that the
sewing machine is locked by the support shaft in the stop position of each step of the hinge stopper.

– 17 –
1) To raise the sewing machine, rstly push feed
base ❷away from you (in the direction of the
arrow), then insert at-blade screwdriver ❹into
bottom-cover opening tool slot ❸, turn it counter-
clockwise to release the sewing machine up/down
lock ❺.
2) Turn at-blade screwdriver ❹to keep the lock
in the released state, and slightly lift the sewing
machine by holding it by rib ❶located on the front
side of the bed.
3) Carefully remove at-blade screwdriver ❹. Hold
ribs ❶located on the front side of the bed with
your both hands to slowly lift the sewing machine
to the 1st step of hinge stopper ❻.
At this time, do not hold feed base ❷and feed
guide shaft ❽.
4) Check to be sure that hinge stopper ❻is locked
by support shaft ❼. Then, take hands off the ribs.
5) To raise the sewing machine to the 1st to 3rd steps
of the hinge stopper, hold ribs ❶located on the
front side of the bed with your both hands to slowly
lift it to the required step of the hinge stopper.
❷
❶
❹
❻
❼
❽
❷
❸
❺