JUKI LZ-2290C-F User manual

LZ-2290C-F/SC-955A
INSTRUCTION MANUAL

CONTENTS
1. SPECIFICATIONS............................................................................................................ 1
1-1. Specications of the sewing machine head ..................................................................... 1
1-2. Specications of the control box....................................................................................... 1
2. SET UP............................................................................................................................. 2
2-1. Drawing of table................................................................................................................... 2
2-2. Cautions when setting up the sewing machine................................................................ 3
2-2-1. How to carry the sewing machine ............................................................................................3
2-2-2. Caution when placing the sewing machine............................................................................. 3
2-3. Installation............................................................................................................................ 3
2-4. Removing the needle bar stopper...................................................................................... 5
2-5. Attaching the knee-lifter...................................................................................................... 5
2-6. Adjusting the height of the knee lifter ............................................................................... 5
2-7. Installing the thread stand.................................................................................................. 6
2-8. Installing the thread guide pin ........................................................................................... 6
2-9. Installing the electrical box ................................................................................................ 7
2-9-1. Preparing for installation of the control box (Only for the EU type models) ....................... 7
2-9-2. Installing the electrical box.......................................................................................................7
2-10. Installing the reactor box (Only for the EU type models) .............................................. 8
2-11. Connecting the power switch cable................................................................................. 8
2-11-1. Installing the power switch .....................................................................................................8
2-11-2. Connecting the power source cord........................................................................................9
2-12. Installing the accessory ring core (Only for the EU type models)................................ 9
2-12-1. Installing the accessory ring core supplied with the electrical box ................................... 9
2-13. Connecting the cords...................................................................................................... 10
2-13-1. Connecting the cords coming from the sewing machine ..................................................10
2-13-2. Screwing the underside cover ground wire to the underside cover (Only for the EU
type models) ................................................................................................................................11
2-14. Handling the cords .......................................................................................................... 11
2-15. Attaching the connecting rod......................................................................................... 12
2-16. Adjustment of the pedal.................................................................................................. 13
2-16-1. Installing the connecting rod................................................................................................ 13
2-16-2. Adjusting the pedal angle ..................................................................................................... 13
2-17. Pedal operation................................................................................................................ 13
2-18. Lubrication ....................................................................................................................... 14
2-19. How to use the operation panel (Basic explanation) ................................................... 15
2-19-1. Selection of the language (operation to be done at rst) ..................................................15
2-19-2. Names and functions of the panel keys ..............................................................................17
2-19-3. Basic operation ......................................................................................................................19
3. PREPARATION BEFORE SEWING .............................................................................. 20
3-1. Attaching the needle ......................................................................................................... 20
3-2. Removing the bobbin case............................................................................................... 20
3-3. How to place a bobbin in the bobbin case...................................................................... 21
3-4. Winding a bobbin .............................................................................................................. 22
3-5. Threading the machine head............................................................................................ 23
i

4. ADJUSTING THE SEWING MACHINE ......................................................................... 24
4-1. Thread tension................................................................................................................... 24
4-1-1. Adjusting the thread tension No. 1 tension...........................................................................24
4-1-2. Adjusting the needle thread tension (Active tension)..........................................................24
4-1-3. Tension correction (with respect to sewing speed) .............................................................25
4-1-4. Tension correction (with respect to the bobbin thread remaining amount) ...................... 27
4-1-5. Right / left tension correction .................................................................................................28
4-1-6. Adjusting the bobbin thread tension ..................................................................................... 29
4-2. Thread take-up spring....................................................................................................... 29
4-2-1. Adjusting the stroke of thread take-up spring ..................................................................29
4-2-2. Adjusting the pressure of thread take-up spring .............................................................29
4-3. Presser foot(Active presser device) ................................................................................ 30
4-3-1. Presser foot pressure.............................................................................................................. 30
4-3-2. Correction of the presser foot pressure ................................................................................31
4-3-3. Manual lifter..............................................................................................................................32
4-4. Adjusting the stitch length ............................................................................................... 33
4-5. Changing the sewing speed ............................................................................................. 33
4-6. LED hand light ................................................................................................................... 34
4-7. Reverse feed stitching ...................................................................................................... 34
4-8. Custom switch ................................................................................................................... 35
4-9. Mirror stitching .................................................................................................................. 37
4-10. Fagot stitch ...................................................................................................................... 39
4-11. Adjusting the amount of oil in the hook ....................................................................... 40
5. HOW TO USE THE OPERATION PANEL ..................................................................... 41
5-1. Explanation of the sewing screen (when selecting a sewing pattern) ......................... 41
5-2. Sewing patterns................................................................................................................. 45
5-2-1. Sewing pattern conguration ................................................................................................. 45
5-2-2. List of sewing patterns............................................................................................................ 46
5-2-3. Reverse feed stitching (at start) pattern ................................................................................48
5-2-4. Reverse feed stitching (at end) pattern .................................................................................54
5-2-5. Editing the sewing patterns ....................................................................................................55
5-2-6. List of pattern functions.......................................................................................................... 58
5-2-7. Teaching function ....................................................................................................................71
5-2-8. One-touch utility changeover function ..................................................................................73
5-2-9. Registration of a new sewing pattern .................................................................................... 74
5-2-10. Copying a pattern ..................................................................................................................76
5-2-11. Narrow-down function...........................................................................................................77
5-3. Setting of the sewing shape ............................................................................................. 78
5-3-1. 2-step zigzag, 3-step zigzag and 4-step zigzag stitch .......................................................... 78
5-3-2. Scallop stitching ...................................................................................................................... 81
5-3-3. Blind stitch sewing .................................................................................................................. 84
5-3-4. Custom pattern stitching ........................................................................................................85
5-3-5. T stitch, left...............................................................................................................................85
5-3-6. T stitch, right ............................................................................................................................ 87
5-3-7. Pattern 1....................................................................................................................................90
5-3-8. Pattern 2 (fagoting) ..................................................................................................................92
5-3-9. Pattern 3....................................................................................................................................94
5-3-10. Pattern 4..................................................................................................................................96
5-3-11. Pattern 5..................................................................................................................................98
ii

5-4. Setting the feed locus ..................................................................................................... 100
5-4-1. Adjusting the feed dog height .............................................................................................. 100
5-4-2. Operating timing of the feed .................................................................................................101
5-4-3. Changing the feed locus ....................................................................................................... 102
5-5. Counter function.............................................................................................................. 103
5-5-1. Displaying the sewing screen under the counter display mode .......................................103
5-5-2. Types of the counter.............................................................................................................. 103
5-5-3. How to set the counter .......................................................................................................... 104
5-5-4. How to reset the count-completion state ............................................................................107
5-6. Simplied chart of panel displays ................................................................................. 108
5-7. List of memory switch data ............................................................................................ 109
5-8. List of errors .................................................................................................................... 114
5-9. Memory switch data ........................................................................................................ 119
6. CARE ........................................................................................................................... 121
6-1. Cleaning ........................................................................................................................... 121
6-1-1. Cleaning the cooling fan installed on the under cover ...................................................... 121
6-1-2. Cleaning the hook section .................................................................................................... 121
6-1-3. Replacing procedure of the hook shaft oil wick ................................................................. 122
6-2. Applying grease............................................................................................................... 122
6-3. Replacing the fuse........................................................................................................... 123
6-4. Disposal of batteries ....................................................................................................... 123
7. ADJUSTMENT OF THE MACHINE HEAD (APPLICATION) ...................................... 124
7-1. Needle-to-hook relation (Hook timing adjustment mode) ........................................... 124
7-2. Adjusting height of the needle bar................................................................................. 125
7-3. Adjusting the needle-to-hook timing and the needle guard........................................ 126
7-4. Attaching / removing the hook....................................................................................... 127
7-5. Adjusting the thread trimmer ......................................................................................... 127
7-6. Adjusting the needle thread feeding device ................................................................. 128
7-7. Height and inclination of the feed dog .......................................................................... 129
7-8. Multi-layered section detection function....................................................................... 130
7-8-1. Multi-layered section detection function .............................................................................130
7-8-2. Turning OFF the multi-layered section changeover function by the number of stitching .... 133
7-9. Grease shortage alarm.................................................................................................... 135
7-9-1. Regarding the grease shortage alarm .................................................................................135
7-9-2. E221 Grease-shortage error..................................................................................................135
7-9-3. Regarding K118 error resetting procedure..........................................................................136
8. HOW TO USE THE OPERATION PANEL (APPLICATION)........................................ 137
8-1. Management of sewing patterns.................................................................................... 137
8-1-1. Creation of a new pattern...................................................................................................... 137
8-1-2. Copying a pattern ..................................................................................................................139
8-1-3. Deleting a pattern...................................................................................................................140
8-2. Setting up the polygonal-shape stitching ..................................................................... 141
8-2-1. Editing a polygonal-shape stitching pattern .......................................................................141
8-2-2. Creating a new polygonal-shape stitching pattern............................................................. 147
8-2-3. Setting the step from which polygonal-shape stitching is started ................................... 147
iii

8-3. Continuous sewing pattern ............................................................................................ 148
8-3-1. Selecting the continuous sewing pattern............................................................................ 148
8-3-2. Editing the continuous sewing pattern................................................................................ 149
8-3-3. Creating a new continuous sewing pattern......................................................................... 152
8-3-4. Setting the starting step of the continuous sewing pattern .............................................. 152
8-4. Cycle pattern.................................................................................................................... 153
8-4-1. Selecting the cycle pattern ...................................................................................................153
8-4-2. Editing cycle sewing data .................................................................................................... 154
8-4-3. Creating a new cycle pattern ................................................................................................ 155
8-4-4. Setting the step from which cycle sewing pattern is started ............................................157
8-5. Custom pattern ................................................................................................................ 158
8-5-1. Selecting the custom pattern................................................................................................ 158
8-5-2. Creating a new custom pattern ............................................................................................160
8-5-3. Editing the custom pattern ...................................................................................................163
8-5-4. Copying and deleting the custom pattern ...........................................................................164
8-6. Condensation custom pattern........................................................................................ 165
8-6-1. Selecting the condensation custom ....................................................................................165
8-6-2. Creating a new condensation custom ................................................................................. 165
8-6-3. Condensation custom edit function..................................................................................... 167
8-6-4. Copying/deleting a condensation custom........................................................................... 168
8-7. Simple lock of the screen ............................................................................................... 169
8-8. Version information......................................................................................................... 169
8-9. Adjustment of brightness of the LED panel.................................................................. 170
8-10. Information..................................................................................................................... 171
8-10-1. Data communication............................................................................................................171
8-10-2. USB .......................................................................................................................................174
8-10-3. NFC........................................................................................................................................175
8-11. Key customization......................................................................................................... 176
8-11-1. Assignable data....................................................................................................................176
8-11-2. How to assign a function to a key ......................................................................................177
8-12. Maintenance management function ............................................................................ 179
9. SEWING SPEED TABLE ............................................................................................. 183
10. TROUBLES IN SEWING AND CORRECTIVE MEASURES..................................... 184
iv

– 1 –
Model LZ-2290CF-7
Application Light-weight materials to medium-weight materials
Max. sewing speed 5,000 sti/min (*1)
Max. zigzag width 10 mm (*2)
Max. feed pitch 5 mm (normal/reverse feed) (*3)
Stitch pattern 15 kinds 21 patterns
Needle SCHMETZ 438 #75 (Needle at the time of delivery)
Lubricating oil JUKI New Defrix Oil No. 1
Multi-layered portion detection function With
Horizontal feed control Electronic control
Alternate vertical feed control Electronic control
Active tension function With
Thread trimmer With
Wiper method Front sweeping method
Noise -Equivalent continuous emission sound pressure level (LpA) at the
workstation :
A-weighted value of 81.5 dB; (Includes KpA = 2.5 dB); according to ISO
10821- C.6.2 -ISO 11204 GR2 at 4,000 sti/min.
1. SPECIFICATIONS
1-1. Specications of the sewing machine head
1-2. Specications of the control box
Model SC-955A
Supply
voltage
Single phase
100 to 120V
3-phase
200 to 240V
Single phase
220 to 240V
Single phase
220 to 240V CE
Frequency 50Hz/60Hz 50Hz/60Hz 50Hz/60Hz 50Hz/60Hz
Operating
environment
Temperature : 0 to 35˚C
Humidity : 90% or less
Temperature : 0 to 35˚C
Humidity : 90% or less
Temperature : 0 to 35˚C
Humidity : 90% or less
Temperature : 0 to 35˚C
Humidity : 90% or less
Input 600VA 600VA 600VA 600VA
* 1. The max. sewing speed is set to 4,000 sti/min at the time of delivery (depending on the delivery area).
• The speed is limited by setting of the zigzag width of the sewing pattern and feed amount since the speed is
controlled by the amount of zigzag width per stitch and feed amount.
• Properly set the number of revolution in accordance with the product to be sewn and process.
* 2. Max. zigzag width is limited to 8 mm at the time of standard delivery.
* 3. Standard feed amount has been factory-set to 2.5 mm at the time of shipment.

– 2 –
󱤨
󱤩
󱤪󱤫
󱤬
󱤭
󱤮
󱤯
󱤰
2. SET UP
2-1. Drawing of table
(4 locations)
󱤨8×ø3.4 on the bottom surface, depth 20 (Drill a hole at the time of set-up.) 󱤩Installing position of drawer stopper (on the reverse side) 󱤪ø16, depth 30 󱤫ø17 drilled hole 󱤬3×ø13 drilled hole 󱤭2×ø3, depth 10 󱤮2×ø3, depth 10 󱤯2×ø3.4 on the bottom surface, depth 10 (Drill a hole at the time of set-up.) 󱤰 C1.5 to C2.5 (hinge side only)
(2 locations) (2 locations) (2 locations)

– 3 –
2-2. Cautions when setting up the sewing machine
2-2-1. How to carry the sewing machine
Carry the sewing machine while holding the machine
arm with two persons as shown in the gure.
1. Never hold the handwheel since it
rotates.
2. Be sure to handle the sewing machine
with two persons or more since the sew-
ing machine weighs 49.5 kg or more.
3. Do not hold the operation panel por-
tion when you setting up the sewing
machine head.
2-2-2. Caution when placing the sewing machine
Place the sewing machine on a horizontal and plane
place when placing it and do not place any protrud-
ing thing such as a screwdriver or the like.
2-3. Installation
Thank you very much for the purchase of JUKI Industrial Sewing Machine this time. Make sure of items 2-1
through 2-19 before operating to use this sewing machine with ease.
1) The under cover 󱀂should rest on the four cor-
ners of the machine table groove. Mount rubber
hinge seat 󱀃 on the table and x it on the table
with a nail.
2) Fix two rubber seats 󰿿on side 󱤨(operator’s
side) using nails 󱀀as illustrated above. Fix two
cushion seats 󱀁on side 󱤩(hinged side) using a
rubber-based adhesive. Then place under cover
󱀂 on the xed seats.
󰿿
󱀁
󱀃
󰿿
󱀁
23.5 mm 19.5 mm
󰿿
󱀂
󱀁
󱤨󱤩
󱀀
1.2±0.5 mm
1.2±0.5 mm
1±0.5 mm

– 4 –
If the sewing machine is operated with-
out removing air vent cap 󱀄, oil leakage
from gear box portion 󱀅 may occur.
󱀇
󱀂󱀆
󱀄
󱀅
󱀃
󱢳
3) Remove air vent cap 󱀄attached to the machine
bed. (Be sure to attach cap 󱀄when transporting
the machine head in the state that the machine
head is removed from the machine table.)
Do not hold the handwheel.
4) Fit hinge 󱀆into the opening in the machine bed,
and t the machine head to table rubber hinge 󱀃
before placing the machine head on cushions 󱀇
on the four corners.
5) Attach head support rod 󱢳to the machine table.

– 5 –
2-4. Removing the needle bar stopper
220mm
󱀀󱀁
󰿿
󱀀
󱀁
󱀂
󰿿
󰿿
Keep the needle bar stopper which has
been removed, and install this nee-
dle bar stopper when transporting the
sewing machine. The needle bar stopper
may be cut when it is strongly drawn
out. Slightly move the needle bar to the
right or left and slowly draw out the nee-
dle bar stopper.
Remove needle bar stopper 󰿿for transportation.
Insert knee-lifter into attaching hole 󱀀and tighten it
with bolt 󱀁.
* Adjust the position of knee lifter pad 󰿿to a con-
venient place. For the reference dimension, the
position is 220 mm from the bottom face of table.
* For the LZ-2290CF/AK156, this work is not nec-
essary.
2-5. Attaching the knee-lifter
2-6. Adjusting the height of the knee lifter
1) The standard height of the presser foot lifted
using the knee lifter is 10 mm.
2) The lift of the presser foot can be adjusted with
knee lifter adjustment screw 󰿿.
Do not operate the sewing machine in
the state that presser foot 󱀁 is lifted by
10 mm or more since needle bar 󱀀 and
presser foot 󱀁, or wiper 󱀂 and presser
foot 󱀁 come in contact with each other.

– 6 –
Insert needle thread guide pin 󰿿into the slot on the
machine head.
2-7. Installing the thread stand
2-8. Installing the thread guide pin
1) Assemble the thread stand unit, and insert it in the hole in the machine table.
2) Tighten nut 󰿿.
3) For ceiling wiring, pass the power cord through spool rest rod 󱀀.
󱀀
󰿿
󰿿

– 7 –
2-9. Installing the electrical box
2-9-1. Preparing for installation of the control box (Only for the EU type models)
1) Underside cover ground wires 󱀀are attached
to the underside cover. Secure underside cover
ground wired 󱀀on electrical box 󰿿with screws.
At this time, remove once the mounting screws
from the underside cover.
Install the electrical box to the frame located be-
hind the electrical box in the upward direction as
shown in the gure. Use mounting screws 󱀁that
has been preliminarily attached to the frame.
Install control box 󰿿on the table using four holes 󱤎
in the table. Secure the control box with four bolts 󱀀,
four plain washers 󱀁, four spring washers 󱀂and
four hexagonal nuts 󱀃supplied with the control box.
At this time, insert the nut and washer supplied with
the unit as accessories as shown in the gure so
that the control box is securely xed.
2-9-2. Installing the electrical box
󱀃
󱀂
󱀁
Frame
Pedal sensor
󱀀
󰿿
󱀀󱀀
󱀃
󱤎
󱤎
󱀂
󱀁
󰿿
󱀀
󱀁

– 8 –
2-10. Installing the reactor box (Only for the EU type models)
1） Attach the terminals of power cord 󰿿coming
from the electrical box to reactor box PCB asm.
󱀀and reactor box mounting plate 󱀁.
Connect brown wire A to the rst connector and
blue wire Bto the third connector respectively
from the top of terminal block on the reactor box
PCB asm. using screws. Connect green/yellow
wire Cto reactor box mounting plate 󱀁with
earth setscrew 󱀂.
2) Attach cable clip 󱀃to the power cord coming
from the electrical box. Then, attach the power
cord together with the cable clip to reactor box
mounting plate 󱀁with cable clip setscrew 󱀄.
3) Attach cord bushes 󱀆to input/output cables 󰿿
and 󱀅of the reactor box. Attach both bushes in
the same manner.
4) Attach reactor box cover 󱢳to reactor box
mounting plate 󱀁with four reactor-box cover
setscrews 󱀇.
At this time, x cord bushes 󱀆attached to input/
output cables 󰿿and 󱀅in the concave section
on reactor box cover 󱢳to eliminate a gap be-
tween reactor box 󱢴and cover 󱢳.
5) Secure reactor box 󱢴to the undersurface of
table with four accessory wood screws 󱢵.
6) Secure two cables 󱢸coming from reactor box
󱢴to the table with accessory cable clip 󱢶and
wood screw 󱢷.
󱀅
󱀆
󱀆
󰿿
󱀇
󱢳
󱀆
󱢳
󱢴
󱀁
󱀁
󰿿
󱀀󱀂
A
B
󱀄
󱀃
C
󱀇
󱢵󱢷
󱢶
󱢸
󱢴
󰿿
󱀀
󱀁
Electrical box
(EU type models:
Reactor box)
2-11. Connecting the power switch cable
Fix power switch 󰿿under the machine table with
wood screws 󱀀.
Fix the cable with staples 󱀁supplied with the ma-
chine as accessories in accordance with the forms of
use.
2-11-1. Installing the power switch

– 9 –
Power indication tag
(For example : In the case of 200V)
2-11-2. Connecting the power source cord
Voltage specications at the time of delivery from the factory are indicated on the voltage indication seal.
Connect the cord in accordance with the specications.
• Connecting 3-phase 200 to 240V
• Connecting single phase 220 to 240V
• Connecting single phase 100 to 120V
AC200 to 240V
Light blue
Red
Green/Yellow
Green/Yellow
Green/Yellow
Green/Yellow
Table
Table
Control box
Control box
Power switch
Power switch
Brown
White
White
Green/Yellow — GND
White
Black
Red
Black
Green/Yellow
Green/Yellow
Power switch
Control box
Table
White
White
White
Black
Black
Green/Yellow — GND
AC220 to 240V
White
Black
Never use under the wrong voltage and phase.
Rating plate
Black Red
Red
Black
2-12. Installing the accessory ring core (Only for the EU type models)
2-12-1. Installing the accessory ring core supplied with the electrical box
Refer to accessory manual for "Installing the accessory ring core" supplied with the electrical box for how to
install the ring core.
After screwing the cable to the
power switch, bind the cable
sheath portion with an acces-
sory clip band inside the power
switch.

– 10 –
CN70 CN37 CN36
CN30
CN38 CN32 CN20 CN21 CN22 CN23
2-13. Connecting the cords
DANGER :
1. To prevent personal injuries caused by electric shock hazards or abrupt start of the sewing machine,
carry out the work after turning OFF the power switch and a lapse of 5 minutes or more.
2. To prevent accidents caused by unaccustomed work or electric shock, request the electric expert or
engineer of our dealers when adjusting the electrical components.
2-13-1. Connecting the cords coming from the sewing machine
󱀀
󰿿
1) Loosen four setscrews 󱀀of control box cover 󰿿. Re-
move control box cover 󰿿.
2) Connect the respective cords to the corresponding con-
nectors of CTL PCB, PWR PCB and SUB-D PCB. (Fig. 1)
3) Fix the ground wire 󱀂on position 󱤨of the control box
with a screw. (Fig. 2)
Take care not to incorrectly connect the connec-
tors CN21, CN22 and CN23.
The connector CN22 is provided with a red
marking and the connector CN23 is provided
with a black marking.
Fig. 1
Fig. 2
󱀂
󱤨
󱀁
CN32
CN30
CN36
CN38
CN70
CN21
CN37
CN20
CN22
40P
9P
6P
6P
18P
4P
4P
15P
28P
White
White
White
White
White
White
White
White (Red mark)
Gray
PWR PWB
CTL PWB
White (Black mark)
6P
CN23
SUB-D PWB

– 11 –
2-14. Handling the cords
1) Bring the cords under the table into the control
box.
2) Put the cord brought into the control box through
cord exit plate 󰿿 and x cable clip band 󱀀.
3) Install control box cover 󱀁with four setscrews
󱀂.
Arrange the cord so that it is not tensed
or hitched even when the machine head
is tilted. (See 󱤨 section.)
For the purpose of preventing the cord
breakage, take care not to allow the
cords to be caught between the control
box and control box cover 󱀁 when at-
taching the latter.
DANGER :
1. To prevent personal injuries caused by electric shock hazards or abrupt start of the sewing machine,
carry out the work after turning OFF the power switch and a lapse of 5 minutes or more.
2. To prevent accidents caused by unaccustomed work or electric shock, request the electric expert or
engineer of our dealers when adjusting the electrical components.
2-13-2. Screwing the underside cover ground wire to the underside cover (Only for the EU type models)
Re-tighten the underside cover ground wire that you have removed in "2-9-1. Preparing for installation
of the control box (Only for the EU type models)" p.7.
󰾰
󱤨
󱀀󰿿
󱀂
󱀁
4) Remove cord clamp setscrew 󱀃of the under-
side cover. Pass fan cord 󱀄on the machine
head side through cord clamp 󱀅. Then, secure
the cord clamp with setscrew 󱀃again.
5) Connect fan cord 󱀄on the machine head side to
fan cord 󱀆on the underside cover side.
6) Detach vinyl wrap lm 󱀇from the knee lifter
actuation arm.
󱀆
󱀃󱀅󱀄
󱀇󱀇

– 12 –
2-15. Attaching the connecting rod
1. If the screw is excessively loosened,
the spring will come o󰀨. Loosen the
screw to such an extent that the top of
the screw can be observed from the
case.
2. Whenever you have adjusted the
screw, be sure to secure the screw by
tightening metal nut 󱀃 to prevent the
screw from loosening.
1) Fix connecting rod 󰿿to installing hole 󱤩of ped-
al lever 󱀀with nut 󱀁.
2) Installing connecting rod 󰿿to installing hole 󱤨
will lengthen the pedal depressing stroke, and
the pedal operation at a medium speed will be
easier.
3) The pressure increases as you turn reverse de-
pressing regulator screw 󱀂in, and decreases as
you turn the screw out.
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power o󰀨 and a lapse of 5 minutes or more.
󱀂
󱀃
󱀀
󱤩
󱀁
󱤨
󰿿

– 13 –
2-16-1. Installing the connecting rod
1) Move pedal 󱀁to the right or left as illustrated
by the arrows so that motor control lever 󰿿and
connecting rod 󱀀are straightened.
2-16-2. Adjusting the pedal angle
1) The pedal tilt can be freely adjusted by changing
the length of the connecting rod 󱀀.
2) Loosen adjust screw 󱀂, and adjust the length of
connecting rod 󱀀.
2-16. Adjustment of the pedal
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
2-17. Pedal operation
The pedal is operated in the following four steps:
1) The machine runs at low sewing speed when
you lightly depress the front part of the pedal. 󱤩
2) The machine runs at high sewing speed when
you further depress the front part of the pedal. 󱤨
(If the automatic reverse feed stitching has been
preset, the machine runs at high speed after it
completes reverse feed stitching.)
3) The machine stops (with its needle up or down)
when you reset the pedal to its original position.
󱤪
4) The machine trims threads when you fully de-
press the back part of the pedal. 󱤬
󱀀󱀂
󱀀
󰿿
󱀁
󱤨
󱤪
󱤬
󱤫
󱤩
* When the auto-lifer (AK device) is used, one more operating switch is provided between the sewing ma-
chine stop switch and thread trimming switch.
The presser foot goes up when you lightly depress the back part of the pedal 󱤫, and if you further de-
press the back part, the thread trimmer is actuated.
When starting sewing from the state that the presser foot has been lifted with the Auto-lifter and you de-
press the back part of the pedal, the presser foot only comes down.
• If you reset the pedal to its neutral position during the automatic reverse feed stitching at seam start, the
machine stops after it completes the reverse feed stitching.
• The machine will perform normal thread trimming even if you depress the back part of the pedal immedi-
ately following high or low speed sewing.
• The machine will completely perform thread trimming even if you reset the pedal to its neutral position
immediately after the machine started thread trimming action.

– 14 –
1. When using a new sewing machine for the rst time or using the sewing machine which has
not been used for a long time, run in the sewing machine at a sewing speed of 1,000 sti/min
or less and check the oil quantity in the hook before use.
In the case the oil does not come from the hook, turn the oil amount adjusting screw coun-
terclockwise to make sure that the oil is fed from the hook. After that, adjust the amount of
the oil fed from the hook appropriately. (Refer to "4-11. Adjusting the amount of oil in the
hook" p.40)
2. For the oil for hook lubrication, purchase JUKI NEW DEFRIX OIL No. 1 (Part No. : MD-
FRX1600C0) or JUKI MACHINE OIL #7 (Part No. : MML007600CA).
3. Be sure to lubricate clean oil.
4. Do not operate the machine with the oil hole cap 󰿿 removed. Never remove cap 󰿿 from the
oil inlet in any case other than oiling. In addition, take care not to lose it.
Fill the oil tank with oil before operating the sewing ma-
chine.
1) Remove oil hole cap 󰿿 and ll the oil tank with
JUKI NEW DEFRIX OIL No.1 (part number : MD-
FRX1600C0) or JUKI MACHINE OIL #7 (part number
: MML007600CA) using the oiler supplied with the
machine.
When you feed oil to the sewing machine for the rst
time after purchase, ll up the oil tank (approximately
100 ml). (It is the adequate quantity of oil.)
2-18. Lubrication
WARNING :
1. To prevent the occurrence of an inflammation or rash, immediately wash the related portions if oil
adheres to your eyes or other parts of your body.
2. If oil is mistakenly swallowed, diarrhea or vomitting may occur. Put oil in a place where children cannot
reach.
󱀀
󰿿
2) Pour oil into the oil tank unit until empty mark
󱀀displayed on the upper right portion
of the operation panel changes from Normal
to Full .
Stop pouring oil immediately after the empty
mark changes to Full .
Be aware that, if you pour an excessive quan-
tity of oil into the oil tank, oil can leak through
air vents in the oil tank or may fail to supply
oil properly to the sewing machine.
Be aware, in addition, oil may spill out from
the oil hole if you pour oil into the oil tank vig-
orously.
3) Replenish oil when Empty mark 󱀀is
displayed on the operation panel while the
sewing machine is in use.

– 15 –
2-19. How to use the operation panel (Basic explanation)
2-19-1. Selection of the language (operation to be done at rst)
Select the language to be displayed on the operation panel when you turn ON the power to your sewing
machine for the rst time after the purchase. Note that, if you turn the power OFF without selecting the lan-
guage, the language selection screen will be displayed every time you turn ON the power to the sewing ma-
chine.
󰴤 Turning ON the power switch
󰴥 Selecting the language
The language to be displayed on the operation panel can be changed using the memory switch U406.
Refer to "5-7. List of memory switch data" p. 109 for details.
Firstly, the welcome screen is displayed on the
panel. Then, the language selection screen is
displayed.
* If you turn ON the power to the sewing ma-
chine again immediately after having turned
it OFF, the sewing machine may sometimes
fail to start. It is therefore recommended to
wait for a while after you have turned OFF the
power to the sewing machine before re-turn-
ing it ON.
Select the language you want to use and press
corresponding language button 󰿿. Then, press
󱀀.
This determines the language to be displayed on
the panel.
<Welcome screen>
Be aware that the needle bar may move automatically, according to the settings of the sewing
machine, when the power is turned ON. The needle bar can also be set so that it does not move
automatically. Refer to "5-7. List of memory switch data" p. 109 for details.
<Language selection screen>
󱀀󰿿