JUKI DDL-7000A-7 Series User manual

DDL-7000A-7 Series
INSTRUCTION MANUAL

i
CONTENTS
I. SPECIFICATIONS........................................................................................ 1
II. SET-UP........................................................................................................ 2
1. Installation ..........................................................................................................................................2
2. Installing the pedal sensor................................................................................................................ 3
3. Connecting the connector................................................................................................................. 3
4. Attaching the connecting rod ........................................................................................................... 4
5. Winding the bobbin thread................................................................................................................ 5
6. Adjusting the height of the knee lifter.............................................................................................. 6
7. Installing the thread stand ................................................................................................................ 6
8. Lubrication..........................................................................................................................................7
9. Adjusting the amount of oil (oil splashes)....................................................................................... 7
10. Attaching the needle..........................................................................................................................9
11. Setting the bobbin into the bobbin case........................................................................................10
12. Adjusting the stitch length.............................................................................................................. 10
13. Presser foot pressure ......................................................................................................................10
14. Hand lifter ......................................................................................................................................... 10
15. Adjusting the height of the presser bar ......................................................................................... 11
16. Threading the machine head .......................................................................................................... 11
17. Thread tension ................................................................................................................................. 12
18. Thread take-up spring ..................................................................................................................... 12
19. Adjusting the thread take-up stroke............................................................................................... 12
20. Needle-to-hook relationship............................................................................................................ 13
21. Height of the feed dog ..................................................................................................................... 13
22. Tilt of the feed dog ...........................................................................................................................14
23. Adjusting the feed timing ................................................................................................................ 14
24. Counter knife ....................................................................................................................................15
25. Pedal pressure and pedal stroke.................................................................................................... 15
26. Adjustment of the pedal .................................................................................................................. 16
27. Marker dots on the handwheel ....................................................................................................... 16
III. FOR THE OPERATOR............................................................................. 17
1. Operating procedure of the sewing machine ................................................................................17
2. Operation panel built in the machine head.................................................................................... 19
3. Operating procedure of the sewing pattern ..................................................................................21
4. Setting of functions .........................................................................................................................26
5. Digital types operation .................................................................................................................... 28
6. Function setting list .........................................................................................................................29
7. Details of setting of the main functions.........................................................................................32
8. Stitch balance of back-tacking for lockstitch machine ................................................................38
9. How to set the machine head and to initialize data .....................................................................41
(the factory-set state at the time of shipment) ..............................................................................41
10. How to use the bobbin counter ...................................................................................................... 42
11. Initialization of function setting data.............................................................................................. 43
12. Password lock ..................................................................................................................................45
13. About the USB..................................................................................................................................46
14. List of error codes............................................................................................................................ 47

– 1 –
I. SPECIFICATIONS
No. Model name
Item
DDL-7000AS-7 DDL-7000AH-7
Light- to medium-weight materials Heavy-weight materials
1 Max. sewing speed
Stitch length less than 4mm
5,000sti/min
Stitch length 4mm or more
4,000sti/min
Stitch length less than 5mm
4,000sti/min
Stitch length 5mm or more
3,500sti/min
2Factory-set sewing speed at the
time of shipment 4,000sti/min 3,500sti/min
3 Stitch length 5mm 5mm( ※)
4 Needle bar stroke 30.7±0.5mm 35±0.5mm
5 Thread take-up lever stroke Link thread take-up lever 107mm
(106 to 112mm)
Link thread take-up lever 112mm
(108 to 115mm)
6 Needle *1 DB×1（#14）#14 to 18
134(Nm90) Nm90 to Nm110
DP×5（#21）#20 to 23
134(Nm130) Nm125 to Nm160
7 Thread counts that are supported #60 to #8 (200 to 600dtex) #30 to #8 (600 to 1200dtex)
8 Amount of lift of the presser foot Manual: 5.5 mm, By knee-lifter: 13 mm
9 Lubrication Replenishment of oil reservoir (capacity: 450 ml)
10 Lubrication method Forced lubrication method
11 Lubricating oil
JUKI CORPORATION OIL 7 (equivalent to ISO VG7)
or
NEW DEFRIX OIL No. 1 (equivalent to ISO VG7)
12 Drive system Main-shaft direct-drive system
13 Electrical box Integral with the machine head
14 Power switch 3-phase / CE
15 Motor used AC servomotor, 550 W
16 External dimensions
Distance from machine arm to needle: 260 mm;
height of the machine arm: 130 mm
Arm size: 432 mm x 105 mm; bed size: 476 mm x 178 mm
Entire length: 603 mm
17 Operating temperature /
humidity range Temperature：5˚C to 35˚C/ Humidity：35% to 85%
18 Supply voltage/ Single phase 220V, Rating ± 10 %
19 Frequency 50/60Hz
20 Power consumption 210VA
21 Mass of machine head Completed machine head 34 kg
22 LED light
(Provided as standard) Illumination is adjustable in ve steps.
23 Noise
Equivalent continuous emission
sound pressure level (LpA) at the
workstation:
A-weighted value of 81.0 dBA ; (In-
cludes KpA = 2.5 dBA) ; according
to ISO 10821- C.6.2 -ISO 11204
GR2 at 4,000 sti/min.
Equivalent continuous emission
sound pressure level (LpA) at the
workstation:
A-weighted value of 83.0 dBA ; (In-
cludes KpA = 2.5 dBA) ; according
to ISO 10821- C.6.2 -ISO 11204
GR2 at 4,000 sti/min.
(Caution) Sewing speed di󰀨ers according to the sewing conditions.
* Stitch length can be maximized to 7 mm by changing over the feed dial and the throat plate with the optional
feed dial (22971402) and the optional throat plate (23645807).

– 2 –
5) Fit knee lifter pressing rod 󱀄. Fit hinge 󱀅 into the opening in the machine bed, and t the machine head
to table rubber hinge seat 󱀆before placing the machine head on cushions 󱀇on the four corners.
6) Securely attach head support rod 󱢳to the table until it goes no further.
* Be sure to install the machine head support bar supplied with the unit.
7) Draw out cable 󱢴of the control box through cable draw-out hole 󱢵to route it to the underside of the sew-
ing machine table.
1) Carry the sewing machine while holding the
machine arm with two persons as shown in the
gure.
(Caution) Never hold the handwheel since it rotates.
2) Place the sewing machine on a horizontal and
plane place when placing it and do not place any
protruding thing such as a screwdriver or the like.
3) Adjust so that the oil pan is supported at the four
corners of the table. Mount rubber hinge seat 󱀆
on the table and x it on the table with a nail.
4) Fix two rubber seats 󰿿on side A(operator’s
side) using nails 󱀀as illustrated above. Fix two
cushion seats 󱀁on side B(hinged side) using a
rubber-based adhesive. Then place oli pan 󱀂on
the xed seats.
II. SET-UP
1. Installation
󰿿󰿿
󱀁
󱀁
󱀆
󰿿
󱀀
󱀂
󱀁
AB
19.5mm23.5mm
󱀅
󱀄
󱀇
󱀅
󱀆
󱢵
󱢳
󱢴

– 3 –
1) Install the pedal sensor to the table with mounting
screws 󰿿supplied with the unit.
It is necessary to install the pedal sensor at such
a position that the connecting rod is perpendicular
to the table.
2) After the completion of installation of the pedal
sensor on the table, place the sewing machine
head on the table.
2. Installing the pedal sensor
󰿿
WARNING :
• To protect against personal injury resulting from abrupt start of the sewing machine, be sure to turn
the power OFF, unplug the machine and wait for ve minutes or more before installing the pedal
sensor.
• To prevent damage of device caused by maloperation and wrong specications, be sure to connect
all the corresponding connectors to the specied places. (If any of the connectors is inserted into a
wrong connector, not only the device corresponding to the connector can break but also it can start
abruptly, inviting the risk of personal injury.)
• To prevent personal injury caused by maloperation, be sure to lock the connector with lock.
• Do not connect the power plug until the connection of cords is completed.
• Fix the cords while taking care not to forcibly bend them or excessively clamp them with staples.
• As for the details of handling respective devices, read carefully the Instruction Manuals supplied
with the devices before handling the devices.
ペペペ
󰿿
For upgrading
3. Connecting the connector
Connector
connection diagram
Auto-lifter
Solenoid &
LED/TB unit
Pedal
Do not insert the power plug into the
wall outlet.
Check to be sure that the power switch
is turned OFF.
1) Connect pedal sensor cable 󰿿supplied with the
unit to the control box.
Refer to the connector connection diagram for
connecting ports of the cables.
Be sure to fully insert the connectors
into the corresponding ports until they
are locked.
2) Fix the pedal cable and AC input cable
with a staple.
Underside of the table
AC cable
Pedal sensor cable Staples
Pedal sensor

– 4 –
󰿿
󱀂󱀁
󱀁
󱀀
Fix connecting rod 󰿿to installing hole 󱀂of pedal
lever 󱀀with nut 󱀁.
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.
4. Attaching the connecting rod

– 5 –
1) Insert the bobbin deep into the bobbin winder
spindle 󰿿until it will go no further.
2) Pass the bobbin thread pulled out from the spool
rested on the right side of the thread stand follow-
ing the order as shown in the gure on the left.
Then, wind clockwise the end of the bobbin thread
on the bobbin several times.
(In case of the aluminum bobbin, after winding
clockwise the end of the bobbin thread, wind
counterclockwise the thread coming from the
bobbin thread tension several times to wind the
bobbin thread with ease.)
3) Press the bobbin winding lever 󱀀in the direction
of Aand start the sewing machine. The bobbin
rotates in the direction of Band the bobbin thread
is wound up. The bobbin winder spindle 󰿿auto-
matically as soon as the winding is nished.
4) Remove the bobbin and cut the bobbin thread
with the thread cut retainer 󱀁.
5) When adjusting the winding amount of the bob-
bin thread, loosen setscrew 󱀂and move bobbin
winding lever 󱀀to the direction of Aor B. Then
tighten setscrew 󱀂.
To the direction of A: Decrease
To the direction of B: Increase
6) In case that the bobbin thread is not wound evenly on the bobbin, remove the handwheel, loosen screw 󱀃
and adjust the height of bobbin thread tension 󱀆.
• It is the standard that the center of the bobbin is as high as the center of thread tension disk 󱀄.
• Adjust the position of thread tension disk 󱀄to the direction of Dwhen the winding amount of the bobbin
thread on the lower part of the bobbin is excessive and to the direction Ewhen the winding amount of the
bobbin thread on the upper part of the bobbin is excessive.
After the adjustment, tighten screw 󱀃.
7) To adjust the tension of the bobbin winder, turn the thread tension nut 󱀅.
1. When winding the bobbin thread, start the winding in the state that the thread between the
bobbin and thread tension disk 󱀄is tense.
2. When winding the bobbin thread in the state that sewing is not performed, remove the nee-
dle thread from the thread path of thread take-up and remove the bobbin from the hook.
3. There is the possibility that the thread pulled out from the thread stand is loosened due to
the inuence (direction) of the wind and may be entangled in the handwheel. Be careful of
the direction of the wind.
5. Winding the bobbin thread
D
E
B
󱀁
󰿿
󱀄
󱀅
󱀄
󱀃
󱀄
A
C
󱀆
󱀂
󱀀

– 6 –
7. Installing the thread stand
1) Assemble the thread stand unit, and insert it in the
hole in the machine table.
2) Tighten nut 󰿿.
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) You can adjust the presser foot lift up to 13 mm using knee lifter adjust screw 󰿿.
3) When you have adjusted the presser foot lift to over 10 mm, be sure that the bottom end of needle bar 󱀀
in its lowest position does not hit presser foot 󱀁.
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
󰿿󱀀
󱀁
󰿿

– 7 –
WARNING :
1. Do not connect the power plug until the lubrication has been completed so as to prevent
accidents due to abrupt start of the sewing machine,
2. To prevent the occurrence of an inammation or rash, immediately wash the related portions if
oil adheres to your eyes or other parts of your body.
3. If oil is mistakenly swallowed, diarrhea or vomitting may occur. Put oil in a place where children
cannot reach.
8. Lubrication
1) Before starting the sewing machine, ll oil pan 󰿿
with JUKI MACHINE OIL #7 up to HIGH mark A.
2) Add oil before the oil surface comes down to
reach the LOW mark B.
3) When you operate the machine after lubrication,
you will see splashing oil through oil sight window
󱀀if the lubrication is adequate.
4) Note that the amount of the splashing oil is unre-
lated to the amount of the lubricating oil.
1. When you use a new sewing machine or a sewing machine after an extended period of dis-
use, use the sewing machine after performing break-in at 2,000 sti/min or less.
2. For the oil lubrication, purchase JUKI NEW DEFRIX OIL No. 1 (Part No. : MDFRX1600C0) or
JUKI MACHINE OIL #7 (Part No. : MML007600CA).
3. Be sure to lubricate clean oil.
4. When the oil surface is lower than the LOW mark, the oiling may be inconsistent. To prevent
inconsistent oiling, add oil before the oil surface comes down to reach the LOW mark.
󰴤 Amount of oil (oil splashes) conrmation paper 󰴥Position to conrm the amount of oil (oil splashes)
Oil splashes conrmation paper
3 - 10 mm
25 mm
70 mm
* When carrying out the procedure described below in 2, remove the slide plate and take extreme caution
not to allow your ngers to come in contact with the hook.
1) If the machine has not been su󰀩ciently warmed up for operation, make the machine run idle for approxi-
mately three minutes. (Moderate intermittent operation)
2) Place the amount of oil (oil spots) conrmation paper under the hook immediately after the machine stops
running.
3) Conrm the height of the oil surface in the oil reservoir is within the range between “HIGH” and “LOW”.
4) Conrmation of the amount of oil should be completed in ve seconds. (Check the period of time with a
watch.)
WARNING :
Be extremely careful about the operation of the machine since the amount of oil has to be checked
by turning the hook at a high speed.
9. Adjusting the amount of oil (oil splashes)
(1) Conrmation of the amount of oil in the hook
Closely t the
paper against the
wall surface of the
bed.
󰿿
A
B
󱀀

1) The amount of oil shown in the samples on the
left should be nely adjusted in accordance with
sewing processes.
Be careful not to excessively increase/decrease
the amount of oil in the hook. (If the amount of
oil is too small, the hook will be seized (the hook
will be hot). If the amount of oil is too much, the
sewing product may be stained with oil.)
2) Adjust the amount of oil in the hook so that the
oil amount (oil splashes) should not change while
checking the oil amount three times (on the three
sheets of paper).
Splashes of oil from the hook
1 mm
Appropriate amount of oil (large)
Appropriate amount of oil (small)
1) Turning the oil amount adjustment screw attached
on the hook driving shaft front bushing in the “+”
direction (in direction 󱤨) will increase the amount
of oil (oil spots) in the hook, or in the “–” direction (in
direction 󱤩) will decrease it.
2) After the amount of oil in the hook has been
properly adjusted with the oil amount adjustment
screw, make the sewing machine run idle for ap-
proximately 30 seconds to check the amount of oil
in the hook.
(2) Adjusting the amount of oil (oil spots) in the hook
(3) Sample showing the appropriate amount of oil in the hook
Splashes of oil from the hook
󰴤Amount of oil (oil splashes) conrmation paper
󰴥Position to conrm the amount of oil
(oil splashes)
Oil splashes
conrmation paper
25 mm
70 mm
(4) Conrmation of the amount of oil supplied to the face plate parts
* When carrying out the work described below in 2),
remove the face plate and take extreme caution
not to allow your ngers to come in contact with
the thread take-up lever.
1) If the machine has not been su󰀩ciently warmed
up for operation, make the machine run idle for
approximately three minutes. (Moderate intermit-
tent operation)
2) Place the amount of oil (oil spots) conrmation pa-
per under the hook immediately after the machine
stops running.
3) Conrm the height of the oil surface in the oil
reservoir is within the range between “HIGH” and
“LOW”.
4) The time required for the conrmation of the
amount of oil (oil splashes) should be completed
in ten seconds. (Measure the period of time with a
watch.)
A
B
DDL-7000AS-72mm
DDL-7000AH-73mm
– 8 –

1) Adjust the amount of oil supplied to the thread
take-up and needle bar crank 󱀀by turning adjust
pin 󰿿.
2) The minimum amount of oil is reached when
marker dot 󱤨is brought close to needle bar crank
󱀀by turning the adjust pin in direction 󱤩.
3) The maximum amount of oil is reached when
marker dot 󱤨is brought to the position just op-
posite from the needle bar crank by turning the
adjust pin in direction 󱤪.
minimum
maximum
󰿿
󱀀
󱤨
󱤩
󱤪
󰿿
(6) Sample showing the appropriate amount of oil supplied to the face plate parts
1) The state given in the gure shows the appropri-
ate amount of oil (oil splashes). It is necessary to
nely adjust the amount of oil in accordance with
the sewing processes. However, do not exces-
sively increase/decrease the amount of oil in the
hook. (If the amount of oil is too small, the hook
will be seized (the hook will be hot). If the amount
of oil is too much, the sewing product may be
stained with oil.)
2) Adjust the amount of oil in the hook so that the
oil amount (oil splashes) should not change while
checking the oil amount three times (on the three
sheets of paper).
S plashes of oil from the thread take-up lever
1 mm
Appropriate amount of oil (large)
Appropriate amount of oil (small)
2 mm
S plashes of oil from the thread take-up lever
(5) Adjusting the amount of oil supplied to the face plate parts
10. Attaching the needle
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
󰿿
󱀀
󱤪
󱤫󱤩
󱤨
Use the specied needle for the machine. Use the
proper needle in accordance with the thickness of
thread used and the kinds of the materials.
1) Turn the handwheel until the needle bar reaches
the highest point of its stroke.
2) Loosen screw 󱀀, and hold needle 󰿿with its in-
dented part A facing exactly to the right in direction
B.
3) Insert the needle fully into the hole in the needle
bar in the direction of the arrow until the end of
hole is reached.
4) Securely tighten screw 󱀀.
5) Check that long groove C of the needle is facing exactly to the left in direction D.
When polyester lament thread is used, if the indented part of the needle is tilted toward opera-
tor's side, the loop of thread becomes unstable. As a result, hangnail of thread or thread break-
age may occur. For the thread that such phenomenon is likely to occur, it is e󰀨ective to attach
the needle with its indented part slightly slanting on the rear side.
– 9 –

󱤩
󱤪
󱤨
29 to 32 mm
󱀀
󰿿
A
B
1) Pass the thread through thread slit 󱤨, and pull the
thread in direction 󱤪. By so doing, the thread will
pass under the tension spring and come out from
notch 󱤩.
2) Check that the bobbin rotates in the direction of
the arrow when thread is pulled.
11. Setting the bobbin into the bobbin case
12. Adjusting the stitch length
13. Presser foot pressure
14. Hand lifter
* The dial calibration is in millimeters.
1) Turn stitch length dial 󰿿in the direction of the
arrow, and align the desired number to marker dot
󱤨on the machine arm.
1) Loosen nut 󱀀. As you turn presser spring regula-
tor 󰿿clockwise (in direction 󱤨), the presser foot
pressure will be increased.
2) As you turn the presser spring regulator count-
er-clockwise (in direction 󱤩), the pressure will be
decreased.
3) After adjustment, tighten nut 󱀀.
The standard value of the pressure regulating thumb
screw is 29 to 32 mm.
1) The presser foot is lifted by moving the lever up-
ward.
2) The presser foot is lowered by moving the lever
downward.
󱤨
󰿿
– 10 –

󰿿
1) Loosen setscrew 󰿿, and adjust the presser bar
height or the angle of the presser foot.
2) After adjustment, securely tighten the setscrew 󰿿.
15. Adjusting the height of the presser bar
16. Threading the machine head
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
– 11 –

󰿿
󱀀
󱀁
󱀂
󱀃
󰿿
󱤩
󱤨
󰿿
󱤪
󱤩󱤨
󱤨
󱤩
󱤪
󱤫
󱤬󱤭
󰿿
󱀀
󱀁
1) When sewing heavy-weight materials, move
thread guide 󰿿to the left (in direction 󱤨) to
increase the length of thread pulled out by the
thread take-up.
2) When sewing light-weight materials, move thread
guide 󰿿to the right (in direction 󱤩) to decrease
the length of thread pulled out by the thread take-
up.
3) Normally, thread guide 󰿿is positioned in a way
that marker line 󱤪is aligned with the center of the
screw.
(1) Adjusting the needle thread tension
1) The length of thread remaining at the needle tip
after thread trimming is shortened by turning ten-
sion regulating nut No. 1 󰿿clockwise in direction
󱤨.
2) It is lengthened by turning the nut counterclock-
wise in direction 󱤩.
3) The needle thread tension is increased by turning
tension regulating nut No. 2 󱀀clockwise in direc-
tion 󱤪.
4) It is decreased by turning the nut counterclock-
wise in direction 󱤫.
(2) Adjusting the bobbin thread tension
1) The bobbin thread tension is increased by turning
tension regulating screw 󱀁clockwise in direction
󱤬.
2) It is decreased by turning the screw counterclock-
wise in direction 󱤭.
17. Thread tension
18. Thread take-up spring
19. Adjusting the thread take-up stroke
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
(1) Changing the stroke of thread take-up spring 󰿿
1) Loosen setscrew 󱀀.
2) As you turn tension post 󱀁clockwise (in direction
󱤨), the stroke of the thread take-up spring will be
increased.
3) As you turn the knob counterclockwise (in direc-
tion 󱤩), the stroke will be decreased.
(2) Changing the pressure of thread take-up
spring 󰿿
1) Loosen setscrew 󱀀, and remove thread tension
󱀁.
2) Loosen setscrew 󱀂.
3) As you turn tension post 󱀁clockwise (in direction
󱤨), the pressure will be increased.
4) As you turn the tension post counterclockwise (in
direction 󱤩), the pressure will be decreased.
– 12 –

If the clearance between the blade point of hook and the needle is smaller than the specied
value, the blade point of hook will be damaged. If the clearance is larger, stitch skipping will
result.
To adjust the height of the feed dog :
󰴤Loosen screw 󱀀of crank 󰿿.
󰴥Move the feed bar up or down to make adjust-
ment.
󰴦Securely tighten screw 󱀀.
If the clamping pressure is insu󰀩cient,
the motion of the forked portion becomes
heavy.
(1) Adjust the timing between the needle and the
hook as follows :
1) Turn the handwheel to bright the needle bar down
to the lowest point of its stroke, and loosen set-
screw 󰿿.
(Adjusting the needle bar height)
2) Align marker line 󱤨on needle bar 󱀀with the
bottom end of needle bar lower bushing 󱀁, then
tighten setscrew 󰿿.
(Adjusting position of the hook 󱤎)
3) Loosen the three hook setscrews, turn the hand-
wheel and align marker line 󱤩on ascending nee-
dle bar 󱀀with the bottom end of needle bar lower
bushing 󱀁.
4) After making the adjustments mentioned in the
above steps, align hook blade point 󱀃with the
center of needle 󱀂. Provide a clearance of 0.04
mm to 0.1 mm (reference value) between the nee-
dle and the hook, then securely tighten setscrews
in the hook.
20. Needle-to-hook relationship
21. Height of the feed dog
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
Dimension D (mm)
DDL-7000AS-7 0.04 to 0.10
DDL-7000AH-7 0.12 to 0.20
0.75 to 0.85 mm (DDL7000AS-7)
1.15 to 1.25 mm (DDL7000AH-7)
󱀂
󱀃
󱤎
󰿿󱤨
󱤩

󱀀
󱀁
󱤨󱤩
󰿿
󱀀
– 13 –

󰿿
󱤨󱤩󱤎
󱤏
󱤐
󱤑
󰿿
󱀀
󱀁
1) Loosen screws 󱀀and 󱀁in feed eccentric cam
󰿿, move the feed eccentric cam in the direction
of the arrow or opposite direction of the arrow, and
rmly tighten the screws.
2) For the standard adjustment, adjust so that the
top surface of feed dog and the top end of needle
eyelet are ush with the top surface of throat plate
when the feed dog descends below the throat plate.
3) To advance the feed timing in order to prevent un-
even material feed, move the feed eccentric cam
in the direction of the arrow.
4) To delay the feed timing in order to increase stitch
tightness, move the feed eccentric cam in the
opposite direction from the arrow.
Be careful not to move the feed eccentric
cam too far, or else needle breakage may
result.
1) The standard tilt (horizontal) of the feed dog is
obtained when marker dot 󱤨on the feed bar shaft
is aligned with marker dot 󱤩on feed rocker 󰿿.
2) To tilt the feed dog with its front up in order to
prevent puckering, loosen the setscrew, and turn
the feed bar shaft 90˚ in the direction of the arrow,
using a screwdriver.
3) To tilt the feed dog with its front down in order to
prevent uneven material feed, turn the feed bar
shaft 90˚ in the opposite direction from the arrow.
Whenever the feed dog tilt is adjusted,
the feed dog height will be changed. So,
it is necessary to check the height after
tilt adjustment.
󱤎 Front up 󱤏 Standard
󱤐 Front down 󱤑 Throat plate
Standard feed timing
Advanced feed timing
Delayed feed timing
22. Tilt of the feed dog
23. Adjusting the feed timing
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
– 14 –

When sharpening again the knife 󰿿blade, extra special care must be taken on the handling of
the knife.
24. Counter knife
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
Adjust the force required to operate the foot pedal
Spring 󱤨: Downward force adjustment
Bolt 󱤩: Heeling back force adjustment
Hole 󱤪: Pedal stroke adjustment
For General Application
󱤩
󱤪
󱤨
25. Pedal pressure and pedal stroke
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
Oil Stone
󱀁
󱀀
󱀂
󰿿
󰿿
Fig A
* In the case the thread cannot be trimmed sharply, re-sharpen counter knife 󰿿as illustrated in Fig. Abe-
fore the knife has become dull and re-place it correctly.
1) Loosen setscrew 󱀁of bobbin case opening lever 󱀀, and remove the bobbin case opening lever.
2) Loosen setscrew 󱀂, and remove counter knife 󰿿.
3) To install the counter knife 󰿿, follow the above procedure in reverse order.
– 15 –

󰿿
󱀀
󱀃
󱀁
󱀂
(1) Installing the connecting rod
1) Move pedal 󱀁to the right or left as illustrated by
the arrows so that motor control lever 󰿿 and con-
necting rod 󱀀are straightened.
(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 󱀃.
26. Adjustment of the pedal
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
27. Marker dots on the handwheel
The upper stop position of the needle bar is the po-
sition at which marker dot 󰿿on the cover is aligned
with white marker dot 󱀀on the handwheel.
With respect to the operating timing of the thread
trimming cam, the thread trimming cam operates at
the time when marker dot 󰿿on the cover is aligned
with green marker dot 󱀁on the handwheel.
󱀀(White)
󱀃(Red)
󱀁(Green)
󰿿
– 16 –

󰿿
III. FOR THE OPERATOR
1. Operating procedure of the sewing machine
1) Lightly press the power switch 󰿿by hand to turn
the power ON. Power switch 󰿿is in the ON state
when the "I" mark side is pressed. It is in the OFF
state when the "○" side is pressed.
1. Do not strongly tap the power switch
by hand.
2. If the power indicator LED on the
panel does not light up after having
turned ON the power switch 󰿿, im-
mediately turn OFF the power switch
󰿿and check the supply voltage.
When you want to re-turn ON pow-
er switch 󰿿after carrying out the
aforementioned steps, it is necessary
to wait for ve minutes or more after
you have turned OFF power switch 󰿿.
3. Do not place your hand or anything
under the needle since the needle bar
may automatically move according
to the memory switch setting when
you turn ON the power to the sewing
machine.
2) When you depress the back part of pedal, the needle bar and the presser lifting motor carry out their initial
operation to allow the sewing machine to start sewing.
If you attempt to start sewing without depressing the back part of pedal, the warning message
screen shown below will be displayed. To prevent this, be sure to start sewing after depressing
the back part of pedal.
< Origin retrieval screen >
– 17 –

4) Reverse feed stitching at the beginning of sewing,
reverse feed stitching at the end of sewing and
various sewing patterns can be set on built-in pan-
el 󱀃of the machine head.
6) When sewing is completed, press OFF button 󰿿
of the power switch to turn OFF the power switch
after conrming that the sewing machine has
stopped.
In the case the machine is not used for
a long time, remove the power plug from
the plug receptacle.
5) When one-touch type reverse feed switch 󱀄is
pressed, the sewing machine performs reverse
feed stitching.
Intensity adjustment and turn-o󰀨 of the light is
carried out by pressing switch 󱀅. Every time the
switch is pressed, the light is adjusted in intensity
in ve steps and is turned o󰀨 in turn.
[Change of intensity]
1⇒...... 4 ⇒5⇒1
Bright ⇒...... Dim ⇒O󰀨 ⇒Bright
In this way, every time the switch 󱀅is pressed, the
hand lamp status is changed in repetition.
3) The pedal is operated in the following four steps:
a.The machine runs at low sewing speed when you
lightly depress the front part of the pedal. 󱀀
b. 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.)
c.The machine stops (with its needle up or down)
when you reset the pedal to its original position.
d.The machine trims threads when you fully depress 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 depress 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.
󱀃
󱀅
󱀄
󰿿
󱀁
󱀀
󱀂
– 18 –