JUKI lbh-1790 series Engineer's Manual

R

ENGINEER’S MANUAL

40006360

No.E352-00

Computer-controlled, High-speed,
Lockstitch Buttonholing Machine

LBH-1790 Series

PREFACE

This Engineer’s Manual is written for the technical personnel who are responsible for the service and maintenance of
the machine.
The Instruction Manual for these machines intended for the maintenance personnel and operators at an apparel
factory contains operating instructions in detail. And this manual describes “Standard Adjustment”, “Adjustment
Procedures”, “Results of Improper Adjustment”, and other important information which are not covered by the Instruction
Manual.
It is advisable to use the relevant Instruction Manual and Parts List together with this Engineer’s Manual when carrying
out the maintenance of these machines.
In addition, for the motor for the sewing machine with thread trimmer, refer to the separate Instruction Manual or
Engineer’s Manual for the motor. And for the control panel, refer to the Instruction Manual for the control panel.
This manual gives the “Standard Adjustment” on the former page under which the most basic adjustment value is
described, and on the latter page “Results of Improper Adjustment” under which stitching errors and troubles arising
from mechanical failures are described together with the “Adjustment Procedures”.

CONTENTS

1. SPECIFICATIONS ............................................................................................. 1

2. STANDARD SEWING SHAPE LIST ................................................................. 2

3. STANDARD ADJUSTMENT ............................................................................. 3

(1) Height of the needle bar.................................................................................................. 3

(2) Needle-to-hook timing..................................................................................................... 3

(3) Adjusting the feed timing belt tension .......................................................................... 5

(4) Knife drop position.......................................................................................................... 5

(5) Adjusting the stroke and initial position of the cloth cutting knife ............................ 7

(6) Adjusting the rotary play of the cloth cutting knife...................................................... 9

(7) Replacing the knife.......................................................................................................... 9

(8) Adjusting the needle thread trimmer........................................................................... 11

1) Adjusting the thread grasping force of the needle thread trimmer.......................................................... 11

2) Adjusting the height of the needle thread trimmer .................................................................................. 11

3) Needle thread trimming adjustment mode.............................................................................................. 13

4) Adjusting the needle thread trimmer origin sensor ................................................................................. 15

5) Lateral adjustment of the needle thread trimmer (start of sewing) ......................................................... 15

6) Longitudinal and lateral adjustment of the needle thread trimmer (at the time of trimming)................... 17

7) Opening amount of the needle thread trimmer....................................................................................... 17

8) Adjusting the needle thread draw-in amount .......................................................................................... 19

(9) Adjusting the bobbin thread trimmer .......................................................................... 19

1) Bobbin thread trimmer adjustment mode ............................................................................................... 19

2) Adjusting the bobbin thread trimming origin sensor ............................................................................... 21

3) Adjusting the position of the trimmer ...................................................................................................... 21

4) Replacing the bobbin thread trimmer ..................................................................................................... 23

5) Open timing and open amount ............................................................................................................... 23

(10) Adjusting the presser lifter......................................................................................... 25

1) Adjusting the backlash of the presser lifter gear..................................................................................... 25

2) Adjusting the presser bar position bracket ............................................................................................. 25

3) Adjusting the presser lifter origin sensor ................................................................................................ 27

1 Adjusting the senor ............................................................................................................................. 27

2 Refer to the adjusting procedure of the presser lifter motor origin compensation .............................. 27

(11) Adjusting the thread tension...................................................................................... 29

1) Adjusting the stroke of the thread tension solenoid................................................................................ 29

2) Adjusting the thread take-up spring tension (purl stitching).................................................................... 29

(12) Adjusting the bobbin winder ...................................................................................... 31

(13) Adjusting the thread breakage detecting plate......................................................... 31

(14) Adjusting the bobbin presser..................................................................................... 33

(15) Adjusting the pedal ..................................................................................................... 35

4. ADJUSTING EACH SENSOR ......................................................................... 37

(1) Adjusting the needle rocking origin ............................................................................ 37

1) Needle rocking motor origin compensation ............................................................................................ 38

(2) Adjusting the feed origin .............................................................................................. 39

1) Feed motor origin compensation ............................................................................................................ 40

5. DISASSEMBLING/ASSEMBLING PROCEDURE .......................................... 41

(1) Disassembling/assembling the main shaft ................................................................. 41

(2) Replacing the timing belt (main shaft)......................................................................... 43

(3) Replacing the timing belt (hook driving shaft) ........................................................... 45

(4) Adjusting the timing belt of main shaft (idler) ............................................................ 47

(5) Disassembling/assembling the face plate section..................................................... 49

(6) Disassembling/assembling the needle rocking motor............................................... 51

(7) Replacing the cloth cutting knife solenoid ................................................................. 53

(8) Replacing the cloth cutting knife solenoid cushion................................................... 55

(9) Replacing the knife return stopper .............................................................................. 57

6. LUBRICATION ................................................................................................ 59

(1) Lubricating oil to oiling tank......................................................................................... 59

(2) Adjusting the lubrication for the sewing hook........................................................... 59

(3) Applying grease.............................................................................................................59

1) Main shaft components .......................................................................................................................... 59

2) Presser and feed components................................................................................................................ 60

3) Needle bar rocking components ............................................................................................................. 61

4) Needle thread trimmer components ....................................................................................................... 62

5) Cloth cutting knife components .............................................................................................................. 63

7. OPERATION PANEL....................................................................................... 65

(1) Structure of the operation panel .................................................................................. 65

(2) Initial value data for each shape table......................................................................... 67

8. VARIOUS DATA LIST ..................................................................................... 68

(1) Sewing data list.............................................................................................................. 68

(2) Memory switch data list ................................................................................................ 74

9. EXPLANATION OF SHAPE ............................................................................ 78

10. DETAILED EXPLANATION OF CONTINUOUS STITCHING....................... 86

11. ERROR CODE LIST ...................................................................................... 87

12. ELECTRICAL COMPONENTS...................................................................... 90

(1) Change of data ROM ..................................................................................................... 90

(2) Adaptation to the high voltage..................................................................................... 90

(3) DIP switch....................................................................................................................... 90

(4) Adaptation to the PK pedal........................................................................................... 91

(5) Fuse list .......................................................................................................................... 92

13. GAUGE COMPONENTS AND OPTIONAL COMPONENTS ........................ 93

14. OTHERS ........................................................................................................95

(1) Points of replacement for feed 70 mm and 120 mm................................................... 95

15. TROUBLES AND CORRECTIVE MEASURES............................................. 97

(1) With regard to sewing ................................................................................................... 97

(2) With regard to mechanical components ................................................................... 106

(3) With regard to electrical components ....................................................................... 107

16. TIME CHART ............................................................................................... 123

17. CIRCUIT DIAGRAM .................................................................................... 125

(1) Block diagram A (3-phase 200 to 240V)..................................................................... 125

(2) Block diagram B (Single phase 230V (for CE)) ......................................................... 126

(3) Block diagram C (Single phase 220 to 240V)............................................................ 127

(4) Power circuit diagram (3-phase 200 to 240V) ........................................................... 128

(5) Power circuit diagram (Single phase 220 to 240V)................................................... 129

(6) Power circuit diagram (Single phase 100V) .............................................................. 130

(7) Servo motor circuit diagram....................................................................................... 131

(8) Stepping motor/solenoid circuit diagram.................................................................. 132

(9) Head sensor circuit diagram ...................................................................................... 133

(10) Pedal switch circuit diagram .................................................................................... 134

(11) Connection circuit diagram between control box and head ................................. 135

18. DRAWING OF THE TABLE ........................................................................ 136

−1 −

1. SPECIFICATIONS

No.

1
2

3
4
5
6
7
8
9

10

11
12

13
14
15
16

17

18

19
20
21
22
23

24
25

26
27
28
29

Model
Item
Stitch width*1
Cloth cutting knife size (Knife
length)
Stitch length (max.)*2
Sewing speed
Speed control system
Needle
Needle bar stroke
Thread take-up lever
Hook

Lift of work clamp check

Presser lifting drive system
Bobbin winder

Feed drive method
Needle rock drive system
Cloth cutting knife drive system
Adjustment of needle thread

Sewing shape

Number of patterns stored in
memory
Data memory medium
Data communication function
External pattern creation
Change-over of 1/2 stitching
Input voltage classification
(Power consumption)

Motor
Lubrication method

Lubricating oil
Grease
Dimensions
Weight of machine head

Specifications

5 mm (Resolution : 0.05 mm)

6.4 to 31.8 mm (1/4" to 1-1/4")

41 mm
Standard 3,600 rpm Max. 4,200 rpm (Dry hook : Max. 3,300 rpm)
Panel input and variable resistor
DPX5 #11J to 14J

34.6 mm
Link thread take-up lever
DP type full-rotary automatic lubricating hook, (Dry hook : DP type
RP hook : optional)
14 mm (optional setting possible) Max. 17 mm (When reverse
revolution to lift needle function is set.)
Stepping motor system (1-pedal, 2-pedal)
Built-in machine head type (Bobbin winding possible only when sewing
machine rotates)
Stepping motor drive (Timing belt)
Stepping motor drive
Double acting solenoid drive
Active tension method
Digital setting for each section by means of operation panel (Parallel
section tension, bar-tacking section tension, etc.)
Square shape, radial shape, round shape, etc. 30 shapes (selection
by operation panel)
99 patterns

Smart media (When IP-200 is used)
Possible with IP-200
Possible with PM-1
Each pattern can be set.
Domestic : 1ø 100V/ 3ø 200V (1000VA)
Export : 1ø 220 to 240V (CE : Single phase 230V without power

switch) / 3ø 200 to 240V (1000VA)
Compact AC servo motor 450W Direct-drive method
Face plate section : dry Hook section : minute quantity lubrication
(dry hook : no lubrication)
JUKI New Defrix oil No.1 (Equivalent to ISO VG7)
JUKI exclusive grease, TEMPLEX
Width of machine bed : 200 mm, Height : 364 mm, Length : 630 mm
55 Kg

LBH-1790S LBH-1790S

Model classification : S : standard, K : for knit

Stitch width
Sewing length (Max.)

For *1 and 2, stitch width can be changed to max. 10 mm by replacing optional parts.
Besides, for the sewing length, it can be changed to max. 120 mm (70 mm).

Presser type 1

4 mm

25 mm

Presser type 2

5 mm

35 mm

Presser type 3

5 mm

41 mm

Presser type 5

3 to 10 mm (Optional setting)

10 to 120 mm (Optional setting)

−2 −

2. STANDARD SEWING SHAPE LIST

(1) Square type (2) Round type (3) Radial square type (4) Radial type

(5) Radial straight bar-

tacking type

(6) Radial flow bar-tacking

type

(7) Eyelet square type (8) Eyelet radial type

(9) Eyelet straight bar-

tacking type

(10) Eyelet flow bar-

tacking type

(11) Semilunar type (12) Round square type

(13) Semilunar square

type

(14) Semilunar straight

bar-tacking type

(15) Semilunar flow bar-

tacking type

(16) Eyelet semilunar

type

(17) Eyelet round type

(18) Square radial type

(19) Square semilunar

type

(20) Square round type

(21) Square straight bar-

tacking type

(22) Square radial bar-

tacking type

(23) Radial semilunar

type

(24) Radial round type

(25) Semilunar radial type

(26) Semilunar round

type

(27) Bar-tacking (28) Bar-tacking, right cut (29) Bar-tacking, left cut (30) Bar-tacking, center cut

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

PANEL

DISPLAY

−3 −

3. STANDARD ADJUSTMENT

(1) Height of the needle bar

Standard Adjustment

Standard Adjustment

(2) Needle-to-hook timing

Adjust the height of the needle bar so that the distance from the top surface of the throat plate to the
lower end face of the needle bar is 12.0 mm (S : standard) or 11.3 mm (K : knit) when the needle bar
is in the lowest dead point.

Needle

1) Blade point of the hook is aligned with the center of the needle when the
needle bar goes up by 2.5 mm (S : standard) or by 3.0 mm (K : knit) from
its lowest dead point.
At this time, the distance from the top end of the needle eyelet to the
blade point of the hook is 1.6 to 1.8 mm (needle is in the central section of
the hole in the throat plate).

2) The clearance provided between the needle and the blade point of the
hook is 0.01 to 0.04 mm (when the needle is rocked to the right of the
hole in the throat plate)

3) Adjustment value of the needle guard is 0 to 0.02 mm (needle is in the
central section of the hole in the throat plate).

Rear plate
(Needle guard section)

1.6 to 1.8 mm

0.01 to 0.04 mm

0 to 0.02 mm

Blade point

of hook

Needle guard

2

1

1

2

4

3

5

0 to 0.02 mm

Loop guide section

Inner hook presser

Blade point

−4 −

Adjustment Procedures Results of Improper Adjustment

Adjustment Procedures Results of Improper Adjustment

1. Enter timing gauge [1] 1 supplied with the machine as
accessories between the throat plate and the lower end of the
needle bar as shown in the figure, fit the needle bar to timing
gauge [1] 1, loosen the setscrew 2 in the needle bar
connection, and adjust the height of the needle bar.

(Caution) Adjust the height of the needle bar when the needle

is positioned in the center of the needle hole in the
throat plate.

2. Table of timing gauge

Part No. of timing gauge : 13943402 (S : standard)

13782107 (K : knits)

™ For the floppy fabrics, it is

effective when the needle bar is
slightly lowered than the
standard value.

™ For the floppy fabrics, it is

effective when the hook timing
is slightly retarded than the
standard value.
(Clrarance provided between the
upper end of the needle eyelet
and the blade point of the hook
is desired to be approximately

1.0 mm.)

™ For the purl stitching, if the hook

timing is advanced, crest of
seam is likely to be improved.
On the contrary, if the hook
timing is retarded, stitch skipping
is improved, but crest of seam
is likely to be slightly
deteriorated.

S (standard)
K (knits)

[1]

12.0 mm

11.3 mm

[2]

14.5 mm

14.3 mm

79NS1

791K

Sub-class type Engraved mark

Timing gauge

1. Turn the hand pulley in the normal direction of rotation, and make a
state that the needle is in the center of hole in the throat plate and the
needle bar starts going up from the lowest dead point. Then enter
timing gauge [2] 1 between the throat plate and the lower end of the
needle bar as shown in the figure and loosen setscrew 2 in the
hook shaft joint to adjust the timing.

2. Loosen setscrew 2 in the hook shaft joint and adjust so that
the clearance between the needle and the blade point of the
hook is 0.01 to 0.04 mm when the needle is rocked to the
extreme right of the hole in the throat plate.

3. Adjust with setscrew 5 so that the engagement of the top end of
bobbin case positioning stopper 3 and inner hook 4 is 0 to 0.2 mm.

4. Bend the needle guard and adjust so that the clearance between the
needle and the needle guard is 0 to 0.02 mm.

(Caution)

1. When adjusting the needle guard, adjust so that there is no
clearance between the inner hook presser and the rear plate.

2. When moving the needle guard to the needle side, put a
screwdriver from the direction of the arrow mark, while
pressing the loop guide, and perform the adjustment.

−5 −

Standard Adjustment

(3) Adjusting the feed timing belt tension

Standard Adjustment

(4) Knife drop position

General drawing of feed mechanism

Feed guide shaft

1

2

3

4

5

6

7

1

2

3

5

6

7

Knife should drop in the center of the knife drop groove in the throat plate.

Knife drop groove

Feed stepping motor

Feed shaft

Edge of machine arm

Knife

4

Throat plate

1

2

3

−6 −

Adjustment Procedures Results of Improper Adjustment

Adjustment Procedures Results of Improper Adjustment

1. Adjust the position of feed motor installing plate 6 so that the
lengthwise feed timing belt tension is applied with 70 to 80N.

2. Temporarily tighten three setscrews 5 in feed motor installing
plate 6 and adjust the timing belt tension by taking adjusting
screw 1 in ond out.

(Caution)

1. Be careful that timing belt 3 is not drwan up to one
direction when feed base 2 is moved back and forth
several times.

2. Be careful that the cord of feed sensor 7 does not come
in contact with timing belt 3.

3. Fix feed motor installing plate 6 so that feed follower
shaft 4 is parallel to the lengthwise feed motor shaft.

1. Loosen the setscrews, and remove work clamp carrier 2 and
throat plate base cover 3.

2. Adjust the logitudinal and lateral positions at the installing
position of throat plate base 1 and the direction of rotation at
the installing position of knife bar base 4.

(Caution) When the installing position of throat plate base 1

is adjusted, check the bobbin thread trimmer.

™ When the belt tension is low,

correct lengthwise feed pitch
may not be obtained, or tooth­skipping of belt may occur.

™ When the position is improper,

the blade of cloth cutting knife
will wear out earlier.

−7 −

Standard Adjustment

(5) Adjusting the stroke and initial position of the cloth cutting knife

General drawing of cloth cutting knife

1

2

3

4

5

6

7

8

9

Machine

arm

Sensor
detecting plate

Sensor

Knife return
spring

Edge of machine arm

0.4 to 0.6 mm

14 mm

Cushion

1

2

3

4

5

6

8

Knife sensor

Knife bar

Knife bar rotary

stopper

Knife driving lever

Cushion

Knife return spring

10 mm

4±0.5 mm

−8 −

Adjustment Procedures Results of Improper Adjustment

1. Make the height of knife return stopper 1 10 mm from the
work plane of the machine arm and fix it with nut 2. (Adjustment
of initial position of the knife)

2. Adjust the position of solenoid installing base 4 so that the
clearance between cloth cutting knife solenoid 3 and the
cushion is 14 mm, and fix it with four screws. (Adjustment of
stroke)

3. Fix knife bar bracket 6 so that the clearance between knife
bar base 5 and the edge of the machine arm is 4±0.5 mm.
(Adjustment of initial position of the knife)

4. Adjust knife installing base 9 so that the clearance between
needle bar 7 and knife 8 is 0.5±0.1 mm.

(Caution)

1. Be careful of the clearance between the throat plate and
knife 8 when adjusting knife bar bracket 6, knife bar
base 5 and knife installing base 9.

2. Fix solenoid installing base 4 so that it is not tilted.

™ If the distance of 4 mm is

excessively small, the knife
installing base comes in contact
with the jaw section of the
machine arm and a big noise
occurs.

™ If the distance of 4 mm is

excessively large, the knife may
come out under the presser
when the presser is lifted.

™ If the distance between cloth

cutting knife and needle bar is
small, the knife comes in contact
with needle bar and abnormal
noise, worn-out of knife or stain
of cloth may occur.

™ If the distance between cloth

cutting knife and needle bar is
large, the distance from the front
bar-tacking to knife hole is
increased and the rear bar­tacking may be cut.

−9 −

Standard Adjustment

(6) Adjusting the rotary play of the cloth cutting knife

Standard Adjustment

(7) Replacing the knife

General drawing of cloth cutting knife

Square block base

1

2

3

4

1

3

4

5

Inch / mm conversion table

Knife size (inch indication)

1/4
3/8

7/16

1/2

9/16

5/8

11/16

3/4

13/16

7/8

1
1-1/8
1-1/4

mm indication

6.40

9.50

11.10

12.70

14.30

15.90

17.50

19.10

20.60

22.20

25.40

28.60

31.80

1

2

Knife return stopper

Knife sensor

Cloth cutting knife solenoid

Knife driving lever

Cushion

1 to 2 mm

−10 −

Adjustment Procedures Results of Improper Adjustment

1. Fix knife bar rotary stopper 3 and the setscrew of thrust collar
4 (from the left side of the machine arm) so that when moving

knife bar 1 up or down, it moves smoothly and there is no
rotary play at knife bar base 2.

(Caution) When moving knife bar 1 up or down, check that

there is a sufficient clearance between square block
5 and knife bar rotary stopper 3 both at upper
and lower positions.

Adjustment Procedures Results of Improper Adjustment

When sharpening knife 1 or replacing it with a new one 1, perform
as follows.

1. Loosen knife setscrew 2. Knife 1 can be simply removed
together with the washer.

2. Adjust so that the distance from knife 1 and the top surface of
the throat plate is 1 to 2mm when lightly lowering the knife bar
by hand as shown in the figure. Then tighten it with the washer
without fail.

When the cloth cutting knife 1 you have is indicated by inch, set
the cloth cutting length (knife size) to mm indication referring to
the inch / mm conversion table.

™ When the rotary play is large,

the cloth cutting knife may
interfere with the throat plate.
This case is very dangerous.
So, be careful.

−11 −

Standard Adjustment

(8) Adjusting the needle thread trimmer

1) Adjusting the thread grasping force of the needle thread trimmer

2) Adjusting the height of the needle thread trimmer

1

2

3

4

1

2

3

4

−12 −

Adjustment Procedures Results of Improper Adjustment

1. If needle thread trimmer 2 fails to provide consistent thread
grasping force, loosen setscrew 1 and remove needle thread
trimmer 2.

2. Slightly bend the top end of thread presser spring 3 by hand
so that it comes in contact with thread trimming blade of upper
knife 4 over the length with no clrarance and so that the needle
thread trimmer securely holds the thread regardless of the
position of the thread trimming blade at which the thread is
trimmed.

™ When the thread grasping force

of needle thread trimmer 2 is
low, slip-off of needle thread at
the start of sewing or thread
grasping failure after thread
trimming occurs.

1. Loosen setscrew 1 in the needle thread trimmer and move
the trimmer up or down to adjust the height. Set the clearance
between the trimmer and the presser as low as possible,
provided that they do not come in contact with each other, in
order to minimize the length of remaining thread on the needle
after trimming.

2. Note that the presser tilts when sewing a multi-layered portion
of the material. Slightly raise the installing position of the trimmer
so that the presser does not come in contact with the trimmer.

™ When the trimmer is set

excessively high, trimmer open
lever 2 comes in contact with
needle thread trimmer lower
knife pin 3 when trimmer open
lever 2 is actuated, and
malfunction may occur. In this
case, loosen setscrew 4 and
raise upward the height of
trimmer open lever 2 to prevent
the contact.

−13 −

Standard Adjustment

Thread trimming
position (40 pulses)

3) Needle thread trimming adjustment mode

* When entering the adjustment

mode, the position is in the state
of origin position.

Needle thread trimming adjustment mode motion

/ Thread holding position / Thread release position / Waiting position / Thread trimming position

Thread release
position (-86 pulses)

Thread holding
position (0 pulse)

Origin
position

Waiting position
(10 pulses)

Latch

Cam groove
end

Roller

Roller

Cam groove end

Thread release position Thread trimming position

−14 −

Adjustment Procedures Results of Improper Adjustment

1. Press MODE key 4 to enter memory switch level 2 of the
adjustment mode.

2. Select K51 with ITEM SELECTION key !0 and press
READY key 2 .

3. Every time ITEM SELECTION key !0 is pressed, the
four positions as shown in the figure are repeatedly moved
and can be changed over in order.

4. To change the set value, move the state to the position you
desire to set, and set the value with DATA CHANGE key !1

.

(1) Thread trimming position

1) Longitudinal position of the trimmer at the time of
trimming can be changed.
Locus of the trimmer in terms of needle thread scarcely
changes and the position of trimmer after trimming only
changes. When needle thread is missed, adjust it with
“6) Longitudinal and lateral adjustment of the needle
thread trimmer (at the time of trimming)”.

(2) Thread holding position

1) Fine adjustment of the longitudinal position of trimmer
at the start of sewing can be performed.

(3) Thread release position

1) Escape amount of the trimmer can be adjusted.
Adjust the opening amount of trimmer with “7) Opening
amount of the needle thread trimmer”.

(4) Waiting position

1) Trimmer waits before trimming thread after it is opened.
The longitudinal position can be adjusted.

5. When READY key 2 is pressed, origin retrieval can be
performed from any position and the position moves to the
origin position.

6. When RESET key 3 is pressed, the respective moving
set values are memorized in EEPROM of the machine head
and the needle thread trimming adjustment mode is completed.

™ Thread trimming position

When the number is excessively
increased, the needle thread
trimming cam groove end comes
in contact with the roller, and
step-out of needle thread
trimming motor may occur.

™ Thread release position

When the number is excessively
decreased (minus number is
increased), the needle thread
trimming cam groove end comes
in contact with the roller, and
step-out of needle thread
trimming motor may occur.

™ Waiting position

When the number is excessively
decreased, the latch comes off
during sewing, trimmer and
needle collide with each other,
and needle breakage or trimmer
breakage may occur.

−15 −

Standard Adjustment

4) Adjusting the needle thread trimmer origin sensor

5) Lateral adjustment of the needle thread trimmer (start of sewing)

* Thread holding : “0” pulse

1

2

1

2

1

A

B

0 to 3 mm

Thread release position Thread trimming position

−16 −

Adjustment Procedures Results of Improper Adjustment

1. Adjust the origin sensor with the respective initial data of thread
releasing position (-86) and thread trimming position (40)
referring to 3) Needle thread trimming adjustment mode.

2. Loosen setscrews 1 in needle thread trimmer sensor installing
plate 2 and move needle thread trimmer sensor installing plate
2 up or down so that A is almost equal to B when the motion
of cam is maximized in each direction.

™ If A and B are not equal to each

other, step-out of needle thread
trimming motor may occur.

™ If the adjustment is improper,

needle thread at the start of
sewing protrudes from the
seam.

1. Start up 3) Needle thread trimming adjustment mode and set
the trimmer to thread holding position (0).

2. At the start of sewing, loosen setscrews 1 and adjust so that
the trimmer is placed 0 to 3 mm to the right from the center of
knife groove. (Adjust in accordance with roll-in of needle thread.)

−17 −

Standard Adjustment

* Thread release position : -86 pulses

6) Longitudinal and lateral adjustment of the needle thread trimmer (at the time of trimming)

7) Opening amount of the needle thread trimmer

* Thread trimming position : 40 pulses

1

2

3

1

0 to 3 mm

(4 to 6 mm)

3 to 5 mm

−18 −

Adjustment Procedures Results of Improper Adjustment

1. Start up 3) Needle thread trimming adjustment mode and set
the trimmer to thread trimming position (40).

2. Loosen setscrews 1 and adjust so that the longitudinal position
of the trimmer is set to 0 to 3 mm from the center of the needle
hole at the time of needle thread trimming.

3. Adjust needle thread trimmer guide shaft 3 in the direction of
the arrow mark so that needle thread trimmer guide shaft 3
comes in contact with arm B 2 at the time immediately before
the needle thread trimmer is fully closed.

™ When the opening amount of

trimmer is narrow, needle thread
is not released at the start of
sewing and needle thread may
protrude.

™ When the opening amount of

trimmer is narrow, needle thread
may be missed at the time of
trimming.

™ When the opening amount of

trimmer is excessively large, the
trimmer opens and needle
thread may slip off when the
presser is lifted.

™ When the opening amount of

trimmer is excessively large, the
trimmer exceeds the motion
range and step-out of needle
thread trimmer motor may occur.

™ If the adjustment is improper,

needle thread is missed at the
time of trimming and cannot be
trimmed. Besides, the trimmed
needle thread may not be
caught.

1. Start up 3) Needle thread trimming adjustment mode and set
the trimmer to waiting position (10).

2. Loosen setscrews 1 and adjust so that opening amount of
the trimmer is 3 to 5 mm when the needle thread trimmer is in
the waiting position during sewing.

(Caution) Check that the trimmer securely releases needle

thread when it retreats to the extreme end.
Increase the opening amount when needle thread
is not released.

−19 −

Standard Adjustment

Standard Adjustment

(9) Adjusting the bobbin thread trimmer

Bobbin thread trimmer adjustment mode motion

8) Adjusting the needle thread draw-in amount

1) Bobbin thread trimmer adjustment mode

K52 Bobbin thread trimmer adjustment mode

* When entering the adjustment

mode, the position is in the state of
origin position.

To be almost flush

ITEM SELECTION key

Open position at
start of opening

/

Thread release
position

Waiting
position

Thread trimming
position

/

Thread holding
position

/,/

/

Stop button

1

2

3

4

A

Waiting position
(“0” pulse)

Origin position

Thread trimming

position (50 pulses)

Thread holding
position (“0” pulse)

Thread release
position (-22 pulses)

* Thread release

position

3 to 4 mm

* Thread trimming

position

−20 −

Adjustment Procedures Results of Improper Adjustment

Adjustment Procedures Results of Improper Adjustment

1. Press MODE key 4 for approximately three seconds to
enter memory switch level 2 of the adjustment mode.

2. Select K52 with ITEM SELECTION key !0 , and press
READY key 2 to enter bobbin thread trimmer adjustment
mode.

3. Every time ITEM SELECTION key !0 is pressed, the
four positions as shown in the figure are repeatedly moved
and can be changed over in order.
Thread release position / Waiting position / Thread trimming
position / Thread holding position

4. To change the set value, move the state to the position you
desire to set, and set the value with DATA CHANGE key !1

.

5. Adjust the thread release position so that the distance from
the top end of lower knife to the holding spring is 3 to 4 mm.

6. Adjust the thread trimming position so that the lower knife and
the holding spring are almost flush with each other.

7. When READY key 2 is pressed, origin retrieval can be
performed from any position and the position moves to the
origin position.

8. When STOP button is pressed when the position is moved to
the thread holding position, the position moves from the thread
holding position to the open amount at the start of opening
(value set with K21 , initial value : 8). Then it can be checked
that how much the bobbin thread trimmer opens when it starts
opening at the start of sewing. Every time STOP button is
pressed, the move between thread holding position and open
amount at start of opening repeats. For the setting procedure,
refer to “4) Open timing and open amount.

9. When RESET key 3 is pressed, the respective moving set
values are memorized in EEPROM of the machine head and
the bobbin thread trimmer adjustment mode is completed.

When the set value at each position is
changed, it becomes as follows.
™ Thread release position

(Initial value : -22 pulses)
When the value is decreased,
opening amount is increased.
When the value is increased, it is
decreased. When the trimmer is
opened, be careful that the trimmer
is not caught in the needle hole.
When the opening amount is
excessively small, bobbin thread
may not be trimmed.

™ Waiting position

(Initial value : “0” pulse)
Waiting position of the trimmer
before thread trimming can be
adjusted. When the set value is
changed, the trimmer may interfere
with needle.

™ Thread trimming position

(Initial value : 50 pulses)
When the value is increased,
overlapping of upper/lower knives
of trimmer is increased and when it
is decreased, the overlapping is
decreased. When the value is
excessively increased, thread
holding after trimming bobbin
thread cannot be prerformed.
When the value is excessively
decreased, the trimmer cannot be
fully closed and thread is not
trimmed.

™ Thread holding position

(Initial value : “0” pulse)
Thread holding position at the start
of sewing can be adjusted.
When the set value is changed, the
trimmer may interfere with needle.

™ When needle thread draw-in

amount is excessively
increased, or needle thread
draw-in arm 3 is excessively
tilted, malfunction occurs.

1. Loosen setscrews 2 in draw-in link B 1 and move needle
thread draw-in arm 3 to adjust needle thread draw-in amount
A (position of needle thread draw-in lever 4) at the time of
needle thread trimming.

2. Reference of adjustment is to adjust A to “0” when draw-in link
B 1 is assembled in the center of long hole and loosen
setscrews 2 in the direction of increasing the needle thread
draw-in amount.

−21 −

Standard Adjustment

2) Adjusting the bobbin thread trimming origin sensor

Bobbin thread

trimming sensor

1

2

To align edges with each other

Bobbin thread trimmer

3) Adjusting the position of the trimmer

™ Remove the hook and oil tank to adjust the position.

(Caution) Fix hexagon screw 1 when

eccentric pin 2 is tilted in the
direction of the arrow mark.

* Waiting position : “0” pulse

1

2

3

0 to 1 mm

0 to 1 mm

−22 −

Adjustment Procedures Results of Improper Adjustment

Loosen setscrews 2 in bobbin thread trimming origin detecting
sensor installing plate 1, align the edges of the arrrow mark in
the figure with each other, and tighten setscrews 2.
After assembling the sensor installing plate, check and adjust the
motion referring to “(9) - 1) Bobbin thread trimmer adjustment
mode”.

1. Start up 1) Bobbin thread trimmer adjustment mode and set
the trimmer to the waiting position.

2. When bobbin thread trimmer origin is detected, loosen hexagon
screw 1, turn eccentric pin 2, and adjust so that the clearance
between the top end of bobbin thread trimmer 3 and the knife
groove of throat plate is 0 to 1 mm. Then tighten hexagon
screw 1.

3. When the position of eccentric pin 2 is changed, check the
motion and perform the adjustment referring to 1) Bobbin thread
trimmer adjustment mode.

™ When the distance from bobbin

thread trimmer 3 to the knife
groove is large, the trimmer may
not be fully closed.

™ When the distance from bobbin

thread trimmer 3 to the knife
groove is small, the trimmer
comes in contact with the cloth
cutting knife and may be broken
at the time of knife dropping.

−23 −

Standard Adjustment

4) Replacing the bobbin thread trimmer

1

2

3

5) Open timing and open amount

Conditions : Fix bobbin thread trimmer

working link 1 in the center
of the long hole.

0.5 to 1.5 mm

™ Thread holding position

Clearance between bobbin thread trimmer upper
knife pin 2 and bobbin thread working arm 3 is

0.5 to 1.5 mm.

™ Open amount at start of opening

Overlapping amount (arrow mark section) of the
top end of bobbin thread trimmer upper knife 4
and holding spring 5 is almost “0”.

K21 Open amount of bobbin thread trimmer at
sewing start Initial value : 8 (Memory switch level

2)

1

0

4

5

2

3

−24 −

Adjustment Procedures Results of Improper Adjustment

1. Put the sewing machine in the bobbin thread trimming
adjustment mode with level 2 K52 of memory switch. Refer to
“1) Bobbin thread trimmer adjustment mode”.

2. Put the position to thread trimming position (state in the figure
on the left side) with ITEM SELECTION key !0 .
Remove setscrews 1 and 2, and replace bobbin thread
trimmer 3.

(Caution) After replacing the bobbin thread trimmer 3, check

the motion with “1) Bobbin thread trimmer
adjustment mode”.

1. Start up 1) Bobbin thread trimmer adjustment mode.

2. Assembling parts
(1) Making the center of the long hole of bobbin thread trimmer

working link 1 as the reference, adjust thread holding
position and open amount at the start of opening position
and, fix them.

3. Bobbin thread trimmer motion at the start of opening
(1) After start of sewing, U24 (Bobbin thread trimmer motion

start distance) feed moves and K21 (Bobbin thread trimer
release amount at sewing start) trimmer opens.
After “Open amount at start of opening”, the trimmer
gradually opens and it opens up to the release position of

K52 (Bobbin thread trimmer adjustment mode).

4. Adjustment with the operation panel
(1) Open timing and open amount can be adjusted using the

operation panel.
™ Thread at the sewing start is not interlocked or when

bobbin thread at the sewing start protrudes upward :

.... Make the bobbin thread holding section longer. U24

+, K21 –

™ Seams at the sewing start are gathered cramped or when

seams at the sewing start look stitch like skipping :

.... Make the bobbin thread holding shorter. U24 –,

K21 +

(Caution) Change the set value little by little because of

delicate adjustment.

™ When bobbin thread is not held

at the start of sewing, it does not
interlace with needle thread and
seams may not be formed.

™ When bobbin thread holding

section is excessively long,
seams are gathered and may
look like stitch skipping.

™ When bobbin thread holding

section is excessively short,
bobbin thread at the sewing start
may be drawn out to the upside.

−25 −

Standard Adjustment

(10) Adjusting the presser lifter

1) Adjusting the backlash of the presser lifter gear

1. For the backlash of the presser lifter gear, adjust the installing position of presser lifter motor 1 to
remove the backlash.

2. Adjust so that backlash is 0.05 to 0.1 mm.

1

2 (4 pcs.)

3

4

2) Adjusting the presser bar position bracket

1

2

Work plane of the machine arm

8 mm

−26 −

Adjustment Procedures Results of Improper Adjustment

1. Loosen four setscrews 2 in the presser lifter motor, put a sheet
of thin paper (approximately 0.05 mm thick) between gear,
large 3 and gear, small 4, close the play, and fix four
setscrews 2 in the presser lifter motor to almost adjust the
backlash.

2. After adjusting the backlash, apply grease to gear section of
gear, large 3 and gear, small 4.

™ When backlash is large, presser

foot lifting working noise
increases.

™ When backlash is small,

backlash is closed and
malfunction occurs.

Loosen setscrew 1 in the presser bar position bracket when the
presser is in the lowest position and adjust so that the height
between presser bar position bracket 2 and the work plane of
the machine arm is 8 mm. Then tighten setscrew 1 in the presser
bar position bracket.

−27 −

Standard Adjustment

3) Adjusting the presser lifter origin sensor

1 Adjusting the senor

Draw backward.

2 Refer to the adjusting procedure of the presser lifter motor origin compensation

1

2

3

4

5

6

7

7

−28 −

Adjustment Procedures Results of Improper Adjustment

1 Adjusting the sensor

Insert a spacer of 3 mm (hexagonal wrench key of 3 mm or the
like) between the presser foot and the throat plate, turn ON
the power in the state that sensor detecting plate 1 is drawn
backward (when PBL Llink 6 is pressed to the rear (direction
of the arrow), hinge screw 7 goes up) loosen setscrews 2 in
the installing plate, move presser lifter sensor installing plate
3 in the direction of the arrow mark, and fix setscrews 2 in
the installing plate at the position where LED of presser lifter
origin sensor starts lighting up.
When the adjustment cannot be performed, loosen setscrews
4 in the detecting plate and tilt sensor detecting plate 3 for
adjustment.

2 Presser lifter motor origin compensation

1. Press MODE key 4 for approximately three seconds

to enter memory switch level 2 of the adjustment mode.

2. Select K17 with ITEM SELECTION key !0 .

3. When the existing set value is changed with DATA CHANGE

key !1 , the origin sensor moves to the position of
the set value.
Set value can be set within the range of -100 to 10.

4. Every time STOP button is pressed during setting the origin

compensation value, the move from the position of existing
compensation value to that of compensation value “0” is
repeatedly performed.

5. When the setting item of K17 is changed with ITEM

SELECTION key !0 , the origin compensation value
is memorized in EEPROM of the machine head and the
presser lifter motor origin compensation is completed.

™ When the adjustment is

improper, the number (display)
on the panel is different from the
actual height of the presser.

™ When the number (display) on

the panel is excessively different
from the actual height of the
presser, step-out of presser lifter
motor occurs, and the presser
may not be fully lowered.

−29 −

Standard Adjustment

(11) Adjusting the thread tension

2) Adjusting the thread take-up spring tension (purl stitching)

1) Adjusting the stroke of the thread tension solenoid

To align edge

1

2

3

4

5

6

1

2

3

3

2 to 2.5 mm1 ± 0.3 mm

−30 −

Adjustment Procedures Results of Improper Adjustment

1. Align shaft end 1 of solenoid with the edge of thrust collar 2.

2. Assemble thread tension connecting plate 3 in the direction
as shown in the figure.

3. Adjust so that thread tension connecting shaft 5 protrudes by
2 to 2.5 mm from adjustment nut A 4 and that stroke is 1±0.3
mm using adjustment nut B 6.

™ When the dimension value,

1±0.3 mm is excessively
improper, proper needle thread
tension cannot be obtained and
sewing failure occurs.

™ When the direction of thread

tension connecting plate 3 is
improper, the plate comes in
contact with the machine frame
or the like and malfunction
occurs.

1. It is proper that thread take-up amount of thread take-up spring
1 is 8 to 10 mm and that the strength of the start of moving is
approximately 0.06 to 0.1N.

2. To change the moving amount of thread take-up spring 1,
loosen screw 2, put a thin screwdriver in the slit of tension
post 3 and turn the screwdriver to adjust the moving amount
of the thread take-up spring tension.

3. To change the strength of thread take-up spring 1, put a thin
screwdriver in the slit of tension post 3 and turn the screwdriver
in the state that screw 2 is tightened. Turning clockwise
increases the strength of thread take-up spring, and
counterclockwise decreases the strength of the thread take­up spring.

(Caution) Assemble this thread tension after pressing until

it will go no further.

−31 −

Standard Adjustment

(12) Adjusting the bobbin winder

Standard Adjustment

(13) Adjusting the thread breakage detecting plate

Bobbin winder

0.5 ± 0.2 mm

1

2

Main shaft

1

2

3

−32 −

Adjustment Procedures Results of Improper Adjustment

Adjustment Procedures Results of Improper Adjustment

Adjust and fix the position of bobbin winder driving wheel 2 with
the setscrew so that a clearance of 0.5±0.2 mm is provided
between rubber ring 1 and bobbin winder driving wheel 2 in the
state that the bobbin thread is not wound.

(Caution) When using the bobbin winder for a long period of

time, rubber ring 1 will wear down and slip. As a
result, bobbin thread may not be wound. At this
time, adjust and fix the position of bobbin winder
driving wheel with the setscrew.

™ If the pressing pressure is low,

rubber ring 1 slips and bobbin
thread may not be wound.

™ If the pressing pressure is high,

wear of rubber ring 1 is
increased.

1. Adjust so that thread breakage detecting plate 1 comes in
contact with thread take-up spring 2 without fail when the
machine head is not threaded. (Slack of the thread take-up
spring has to be 0.5 mm.)

2. When the stroke of thread take-up spring 2 has been changed,
loosen screw 3 and be sure to adjust thread breakage detecting
plate 1.

(Caution) Adjust so that thread breakage detecting plate 1

does not come in contact with any metallic part
(thread tension disk, etc.) other than thread take­up spring 2.

™ If the detecting plate does not

come in contact with the spring,
the needle thread breakage
cannot be detected and the cloth
cutting knife works.

™ If the contacting force is too

strong, early breakage of the
thread take-up spring 2 will
occur.

−33 −

Standard Adjustment

(14) Adjusting the bobbin presser

Front end of machine bed

12

3

4

8 to 15 mm

5 mm

−34 −

Adjustment Procedures Results of Improper Adjustment

1. Adjusting the waiting position of the bobbin presser
Loosen nut 1 and adjust the distance from screw 2 to the
bobbin presser base to 5 mm.
Adjust so that the distance from the top end of bobbin presser
4 to the front end of machine arm (dimension as shown in the
figure) is 8 to 15 mm and tighten nut 1.
When the waiting position is near the hook, it is difficult to set
or remove the bobbin case, and when the position is
excessively away from the hook, the bobbin presser comes in
contact with the hook cover.

2. Adjusting the bobbin presser
Loosen setscrew 3 and adjust so that the top end of bobbin
presser 4 enters the hole of the bobbin case. Then tighten
setscrew 3.
After the adjustment, check that the top end of bobbin presser
4 enters the hole of the bobbin case when the bobbin thread
trimmer is in the working state.

−35 −

Standard Adjustment

(15) Adjusting the pedal

™ 2-pedal • 1-pedal

(Without intermediate position)

™ 1-pedal

(With intermediate position)

SA

SB

1

2

3

4

A

B

C

1 : Maximum position
2 : Intermediate position
3 : Cloth setting position
4 : Sewing position

1
2
3
4

SA SB

1 ON OFF
2 OFF OFF
3 OFF ON
4 ON ON

Pedal

−36 −

Adjusting of the pedal in accordance with the pedal type setting
Attach or remove setscrew 1 in accorance with the setting of
memory switch level 2 K01 .
™ 2-pedal and 1-pedal (without intermediate position) / Attach

setscrew 1.

™ 1-pedal (with intermediate position) / Remove setscrew 1.
Adjusting the pedal stroke

Pass the pedal connecting rod through hole B in the center.
When the rod is passed through hole A which is far from the
center, the whole pedal stroke is increased, and when it is passed
through hole C which is near the center, the stroke is decreased.

Fine adjustment of the pedal stroke
The pedal stroke can be finely adjusted by changing the position
of the detecting plate of the sensor.

Detecting plate 2 ........The play at the start of depressing the

pedal can be adjusted in case of using 1­pedal type. When detecting plate 2 is
lowered, the play is decreased, and when
it is raised, the play is increased.

Detecting plate 3 ........Starting in case of using 2-pedal and 1-

pedal (without intermediate position) types
and lowering the presser in case of 1­pedal (with intermediate position) type can
be adjusted. When detecting plate 3 is
raised, timing is advanced and when it is
lowered, timing is retarded.

Detecting plate 4 ........Starting timing of 1-pedal (with

intermediate position) type can be
adjusted. When detecting plate 4 is
raised, timing is advanced, and when it is
lowered, timing is retarded.

Adjustment Procedures Results of Improper Adjustment

−37 −

4. ADJUSTING EACH SENSOR

(1) Adjusting the needle rocking origin

Standard Adjustment

Center of throat plate

1

2

3

4

5

1

2

3

5

Throat plate

6

1.8 mm

6

7

−38 −

Adjustment Procedures Results of Improper Adjustment

(1) Adjusting the needle rocking origin

1. Origin of needle rocking stepping motor 4 can be adjusted
with memory switch level 2 K16 .

2. Loosen setscrew 2 in needle bar rocking lever, rear 1, and
make a state that needle bar rocking frame 3 can move freely
to the right and left. Then fix setscrew 2 so that needle 5 is in
the center of the throat plate when the panel set value is “0”.

(Caution)

1. Check that the clearance between needle rocking sensor
6 and motor lever 7 is 1.8 mm.

2. When loosening setscrew 2 in needle bar rocking lever,
rear 1, remove the bobbin winder unit.

3. Mechanical adjustment is performed in the aforementioned
procedure. However, as a matter of fact, perform compensation
so that the center of the knife groove is equal to the right and
left in the state that seams are formed.
(Compensation can be performed up to 20 pulses (-10 to 10) =
1 mm to the right or left.)

4. When the knife groove width on the right side is larger, perform
compensation to “+” side, and when the knife groove width on
the left side is larger, perform compensation to “–” side.

(Caution) When the needle rocking origin is improper, there

is the possibility that right and left knife groove
widths change each other or the presser interferes
with needle 5 when the needle rocking width is
increased.

1) Needle rocking motor origin compensation

1. Press MODE key 4 for approximately three seconds to
enter memory switch level 2 of the adjustment mode.

2. Select K16 with ITEM SELECTION key !0 .

3. When the existing set value is changed with DATA CHANGE
key !1 , origin retrieval is performed and every time the
set value is changed, needle moves to the position of the set
value.
Set value can be set within the range of -10 to 10. (0.05mm/1
pulse)

4. Every time STOP button is pressed during setting the origin
compensation value, the move from the position of existing
compensation value to that of compensation value “0” is
repeated.

5. When the setting item of K16 is changed with ITEM
SELECTION key !0 , the origin compensation value is
memorized in EEPROM of the machine head and the needle
rocking motor origin compensation is completed.

−39 −

Standard Adjustment

(2) Adjusting the feed origin

General drawing of feed mechanism

1

2

3

4

4

Feed stepping motor

Feed base

Feed shaft

Feed driven shaft

Timing belt

Feed guide shaft

Adjustment screw

Throat plate

2.5±0.3 mm

(2.2 to 2.8 mm)

Feed base

Feed shaft

Timing belt

−40 −

Adjustment Procedures Results of Improper Adjustment

(2) Adjusting the feed origin

1. Origin of lengthwise feed motor can be adjusted with memory
switch level 2 K15 .

2. Move the feed with or key and adjust so that the distance
from presser 1 to the center of the needle is 2.5±0.3 mm.

3. Loosen setscrews 3 in sensor installing plate 2, move feed
sensor 4 and fix setscrews 3 at the position where the
detecting lamp (built in the sensor) is changed over from ON
to OFF.

4. Return the compensation value to “0” and make the origin
retrieval. Then check again the position of 2.5±0.3 mm.
(Origin retrieval is performed with the temporary stop switch
located on the side of face plate section.)

(Caution) When the position of feed origin is improper,

presser 1 interferes with needle when sewing the
overlapped section. As a result, thread breakage
or needle breakage will be caused.

1) Feed motor origin compensation

1. Press MODE key 4 for approximately three seconds to
enter memory switch level 2 of the adjustment mode.

2. Select K15 with ITEM SELECTION key !0 .

3. When the existing set value is changed with DATA CHANGE
key !1 , origin retrieval is performed and every time the
set value is changed, the feed moves to the position of the set
value.
Set value can be set within the range of -120 to 400. (0.025
mm/1 pulse)

4. Every time STOP button is pressed during setting the origin
compensation value, the move from the position of the existing
compensation value to that of compensation value “0” is
repeated.

5. When the setting item of K15 is changed with ITEM
SELECTION key !0 , the origin compensation value is
memorized in EEPROM of the machine head and the feed
motor origin compensation is completed.

™ Improper position of presser

(improper longitudinal position of
presser arm as well) influences
closing/opening of the needle
thread trimmer.

™ In case the distance from the

needle hole to the presser is
excessively small when the feed
origin is detected, the presser
comes in contact with needle
when sewing the overlapped
section. As a result, thread
breakage or needle breakage
will be caused.

−41 −

Main motor

5. DISASSEMBLING/ASSEMBLING PROCEDURE

(1) Disassembling/assembling the main shaft

Procedures of disassembling/assembling

General drawing of the main shaft

2

3

5

8

!0

1

3

4

5

6

7

8

9

!0

Thread take-up lever (asm.)

Coupling

Idler (asm.)

Main motor

Bush

−42 −

Procedures of disassembling/assembling

1. Removing the main shaft

1) Remove the face plate section referring to “(5) Disassemblint/assembling the face plate section”.

2) Loosen two coupling setscrews 1. (LOCKTITE is applied to setscrews 1.)

3) Loosen timing belt 2, remove timing belt 2 from main shaft sprocket 3 and loosen two main shaft

sprocket setscrews 4.

4) Loosen two bush setscrews 6 in main shaft front bearing 5.

5) Loosen two setscrews in bobbin winder driving wheel 7 and draw forward main shaft 8 together

with counter weight 9.

2. Assembling the main shaft

1) Insert counter weight 9 and main shaft 8 into the section of main shaft front bearing 5 and main

shaft intermediate bearing !0.

2) Lightly press counter weight 9 from the front to the rear and fix two bush setscrews 6 in main shaft

front bearing 5.
(Adjust so that screw No. 1 is set to the flat section of main shaft 8.)

3) Lightly press forward the main shaft sprocket and fix two setscrews 4 in main shaft sprocket 3.

(Adjust so that screw No. 1 is set to the flat section of main shaft 8.)

4) Fix two coupling setscrews 1.

(Adjust so that screw No. 1 is set to the flat section of main shaft 8.)

5) Adjust the position of bobbin winder driving wheel 7 and fix it with two setscrews.

−43 −

(2) Replacing the timing belt (main shaft)

Procedures of disassembling/assembling

Main shaft intermediate bearing

General drawing of the main shaft

3

4

5

6

7

1

2

3

4

Main shaft intermediate bearing

Thread take-up lever (asm.)

Main shaft
front
bearing

Coupling

Bobbin winder wheel

8

−44 −

Procedures of disassembling/assembling

1. Removing the timing belt

1) Loosen two coupling setscrews 1. (LOCKTITE is applied to setscrews 1.)

2) Loosen four main motor installing screws 2 and remove main motor 3. (When main motor 3

interferes with the presser lifter motor and it is difficult to remove it, loosen four setscrews in the
presser lifter motor and slightly move the presser lifting motor to the side.)

3) Remove left side cover B 8, adjust the idler and loosen timing belt 4. (For the adjusting procedure

of the idler, refer to “5.- (4) Adjusting the timing belt of main shaft and hook driving shaft (idler)”.

2. Assembling the timing belt

1) Be caraful of the position of idler section 5 and put sprocket 7 of main shaft 6 so that timing belt

4 is set to the proper position.

2) Assemble main motor 3 to the machine head and fix two setscrews 1 of coupling.

(Be sure to assemble it so that screw No. 1 is set to the flat section of main shaft.)
Apply LOCKTITE 242 to the screws after removing oil from them.)

3) Adjust the idler and fix timing belt 4 with the proper belt tension.

Refer to “5.- (4) Adjusting the timing belt of main shaft and hook driving shaft (idler)”

(Caution) When assembling timing belt 4, be sure to turn the sewing machine several times by

hand and check that timing belt 4 is not put on one side.

−45 −

(3) Replacing the timing belt (hook driving shaft)

Procedures of disassembling/assembling

General drawing of the hook driving shaft

* Disassembling/assembling is possible in this state.

2

3

5

7

9

!0

!1

1

1

2

3

4

6

5

7

8

!0

3

9

!0

!1

!2

!2

Hook driving shaft front bearing support

Hand pulley

Hook

Hand pulley

Hook driving shaft unit

Flat section for hook driving shaft
front bearing bush setscrew

Hook driving

shaft rear

bearing

Hand pulley

1.5 mm

33 mm

−46 −

Procedures of disassembling/assembling

1. Removing the timing belt

1) Remove the feed plate and the throat plate connection and loosen two setscrews 1 in the hook

driving shaft bearing bush.

2) Tilt the machine head to the side and remove hook sleeve 2.

3) Loosen setscrew 4 in hook driving shaft bearing support 3 and draw backward the hook driving

shaft unit.

4) Loosen two setscrews 6 in intermediate sprocket shaft 5 and draw backward intermediate sprocket

shaft 5.

5) Draw out timing belt 8 from intermediate sprocket 7.

2. Assembling the timing belt

1) Set timing belt 8 to intermediate sprocket 7 and fix intermediate sprocket 7 with two screws.

2) Insert the hook driving shaft to the machine bed and assemble so that timing belt 8 is put on hook

driving shaft sprocket 9. (Be careful that timing belt 8 is not damaged.)

3) Slightly close the bearing play so that there is no longitudinal play at hook driving shaft !0 and fix

setscrew 4 in hook driving shaft bearing support 3. (Press the hook driving shaft unit to the front
side and lightly press hook driving shaft bearing support 3 to the front side in the state that the
flange section of hook driving shaft intermediate bearing !1 comes in contact with the machined
plane of the machine bed.)

4) Raise the machine head and fix two setscrews in hook driving shaft bearing bush !2. (There is one

flat section on hook driving shaft !0. Fix screw No. 1 to the flat section.)

(Caution)

1. When asembling timing belt 8, be sure to turn the sewing machine several times by hand
and check that timing belt 8 is not put on one side.)

2. If two setscrews 1 in the hook driving shaft front bearing bush and setscrew 4 in hook
driving shaft bearing support 3 are loosened, the hook vibrates and thread breakage or
stitch skipping will be caused.

−47 −

Standard Adjustment

(4) Adjusting the timing belt of main shaft (idler)

Tension is
decreased.

Adjust so that the tension of timing belt of main shaft is 100 to 120N.

1

2

3

4

5

Tension is
increased.

−48 −

Adjustment Procedures Results of Improper Adjustment

1. Lightly loosen idler fixing screw 1 and idler fulcrum hinge screw
2, and tighten idler fixing screw 1 in the state that idler 4 is

placed to timing belt 5 by pressing with tension spring 3.
Then fix idler fulcrum hinge screw 2.
(When idler 4 is placed by pressing with tension spring 3,
100 to 120N is obtained. The tension of timing belt can be
stabilized by lightly pressing and slowly setting free timing belt
5 in the state that idler fixing screw 1 in idler 4 and idler
fulcrum hinge screw 2 are lightly loosened.

(Caution) When the screws are excessively loosened, tilt of

idler 4 occurs and the assembling may be
performed in the improper state. Or, when turning
the main shaft several times by hand, timing belt
5 may be put on one side. So, be very careful.

−49 −

(5) Disassembling/assembling the face plate section

Procedures of disassembling/assembling

1

2

3

4

5

!5

6

7

8

9

!0

!1

!2

!3

!5

!7

!2

!4

!6

* Figure when removing as a set.

−50 −

Procedures of disassembling/assembling

1. Disassembling the face plate section

1) Remove the face plate and the needle.

2) Loosen setscrews 3 and 4 in needle bar rocking frame fulcrum shaft 1 and rocking frame support

shaft 2 and remove needle bar rocking frame 5.
(Remove the needle bar and neel bar bracket together with needle bar rocking frame 5.)

3) Loosen two fixing screws 7 in the thread take-up lever attached to counter weight 6.

4) Loosen two setscrews 9 in thread take-up crank shaft 8 and two setscrews !1 in thrust collar !0,

and remove thread take-up crank shaft 8.

5) Remove three setscrews !3 in square block base !2 and remove thread take-up lever (total asm

!4.) and square block base !2 as a set.

2. Assembling the face plate section

1) Set the set of square block base !2 and thread take-up lever (total asm !4.) to counter weight 6.

2) Fix the flat section of needle bar crank !7 of thread take-up lever (total asm !4.) so that it is set to

screw No. 2 side of fixing screws 7 attached to counter weight 6. Fix screw No. 1 side as well.
(The proper needle stroke cannot be obtained if screws No. 1 and No. 2 are attached in reverse
order.)

3) Put thrust collar !0 and temporarily put thread take-up crank shaft 8 in the machine head.

4) Temporarily tighten setscrew !3 in square block base !2, turn main shaft !5 by hand, and fix setscrew

!3 in square block base at the position where link !6 can smoothly rock without uneven torque.
(Lightly put your hand on the upper hole section of link !6, turn the sewing machine and rock the link
to the right and left to check the motion.)

5) Fix thrust collar !0 so that there is no longitudinal play of the thread take-up lever support.

(There is one flat section for thrust collar setscrew on thread take-up crank shaft 8.)

6) Fix thread take-up crank shaft 8 to the machine head at the position where main shaft !5 is turned

several times and it is stabilized.
(Fixing of thread take-up crank shaft 8 is performed at two places and the flat section is on the front
side.)

7) Set needle bar rocking frame 5.

(Insert it while being careful of the square block and the shaft section of needle bar bracket.)

8) Fix needle bar rocking frame fulcrum shaft 1 and needle bar rocking frame support shaft 2 so that

the thrust play does not occur at needle bar rocking frame 5. (Rock needle bar rocking frame 5 to
the right and left after closing the play and check that the rocking is not heavy.)

(Caution) Be sure to perform the break-in operation for nearly one hour when performing re-

arranging the face plate section, and check there is no noise or uneven rotation.

−51 −

(6) Disassembling/assembling the needle rocking motor

Needle rocking motor unit

Procedures of disassembling/assembling

Needle rocking mechanism drawing

1

2

7

1

2

3

4

5

6

7

8

9

!0

1

Needle rocking sensor

Needle bar rocking frame

Needle

Throat plate

−52 −

Procedures of disassembling/assembling

1. Removing the needle rocking motor

1) Remove the face plate section. (Refer to 5.- (5)) Disassembling/assembling the face plate section.)

2) Loosen setscrew 2 in needle bar rocking lever, rear 1.

3) Loosen two setscrews in thrust collar 3.

4) Draw out forward needle bar rocking shaft 4.

5) Remove three setscrews 6 in needle rocking motor installing base 5.

6) Lift upward the motor together with needle rocking motor installing base 5.

7) Tilt downward the rear side of needle rocking motor 7, move the position of needle bar rocking

lever, rear 1 in the direction of arrow mark and lift it upward.

8) Loosen setscrew 9 in motor lever 8, remove four fixing screws !0 in the needle rocking motor and

remove needle rocking motor 7.

9) Remove the motor cover and the rear cover, and draw out the wiring up to the relay p.c.b.

2. Assembling the needle rocking motor

1) Fix needle rocking motor 7 to needle rocking motor installing base 5.

2) Adjust motor lever 8 to the edge of the motor shaft and fix setscrew 9.

3) Set the needle rocking motor unit to the machine head.

4) Temporarily tighten needle rocking motor installing base 5 with three setscrews 6.

5) Insert needle bar rocking shaft 4 into the metal and fix it with thrust collor 3 at the position where

it can smoothly rock without thrust play.

(Caution) When inserting needle bar rocking shaft 4, insert it into the hole in needle bar rocking

lever, rear 1 as well.

6) Rock needle bar rocking lever, rear 1 by hand and fix three setscrews 6 in needle rocking installing

base 5 at the position where there is no torque.

7) Wire the cord of needle rocking motor 7 to the relay p.c.b.

8) Perform the origin adjustment of the needle rocking. (Refer to “4.-(1) Adjusting the needle rocking

origin”.)

* Even when replacing the needle rocking sensor, remove the needle rocking motor unit in accordance

with the aforementined description.

−53 −

(7) Replacing the cloth cutting knife solenoid

Cloth cutting knife solenoid single body

Procedures of disassembling/assembling

1

2

3

4

5

6

8

3

7

Washer

−54 −

Procedures of disassembling/assembling

1) Remove the top plate cover.

2) Remove four setscrews 2 in solenoid installing base 1.

3) Loosen setscrew 4 in knife holder 3 and draw out gib-headed shaft 5 in the direction of arrow mark.

4) Lift upward cloth cutting knife solenoid 6, loosen screw 7 in the knife holder section, and remove knife
holder 3.

5) Loosen three screws 8 which are fixing solenoid installing base 1 and cloth cutting knife solenoid 6.

6) Remove the motor cover and the rear cover, and draw out the wiring cord up to the relay p.c.b.

* For the assembling procedure, perform it by reversing the aforementioned steps.
* After assembling, move the washer of cloth cutting knife solenoid 6 to and fro (direction of

arrow mark) and check that it smoothly moves.

−55 −

(8) Replacing the cloth cutting knife solenoid cushion

Procedures of disassembling/assembling

1

2

3

4

2

1

2

3

4

1 mm

−56 −

Procedures of disassembling/assembling

1) Loosen with the spanner two nuts 2 assembled to the front and rear of cushion 1.

2) Cushion 1 is pasted to washer 3 with the both-side adhesive tape. Strip off the tape and wipe off
neatly the plane of washer 3.

3) Paste new cushion 1 (with both-side adhesive tape) to washer 3 and fix two nuts 2 so that nut 2
comes to the place of 1 mm from the end of cloth cutting knife solenoid shaft.

−57 −

(9) Replacing the knife return stopper

Procedures of disassembling/assembling

Knife drive lever

1

2

3

4

Knife bar

Knife bar turning

stopper

−58 −

Procedures of disassembling/assembling

1) Remove knife return spring 1 from spring bracket 2.

2) Loosen and remove nut 4 of knife return stopper 3.

3) Screw in knife return stopper 3 to the lower side and draw it out.

* For the assembling procedure, perform it by reversing the aforementioned steps.

(For the position of the stopper, refer to 3.-(5) Adjusting the stroke and the initial position of the
cloth cutting knife.)

−59 −

6. LUBRICATION

(1) Lubricating oil to oiling tank

1. Fill the oiling tank with New Defrix Oil No.1 up
to the level indicated by “MAX” 1.

(2) Adjusting the lubrication for the

sewing hook

1. Adjust the amount of oil supplied to the sewing
hook by loosening lock nut 2 and turning oil
amount adjusting screw 3.

2. Amount of supplied oil is decreased when
turning screw 3 clockwise.

3. After adjusting the amount of oil, fix the screw
with lock nut 2.

4. When you first operate your sewing machine
after set-up or after an extended period of
disuse, remove the bobbin case and apply a few
drops of oil to the hook race.

1

23

Section A : : JUKI exclusive grease

(3) Applying grease

Section A : : JUKI exclusive grease (face plate section)
Section B : : ESSO TEMPLEX (other than face plate section)

1) Main shaft components

A

A

A

A

A

A

A

Detailed diagram of oil amount adjusting section

Oil pipe

Decrease
Oil amount
Increase

2

3

−60 −

2) Presser and feed components

A

A

A

A

A

A

A

A

B

B

B

B

B

B

B

B

B

B

B

B

Section A : : JUKI exclusive grease
Section B : : ESSO TEMPLEX

B

−61 −

3) Needle bar rocking components

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

Section A : : JUKI exclusive grease

−62 −

4) Needle thread trimmer components

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

Section B : : ESSO TEMPLEX

B

−63 −

5) Cloth cutting knife components

A

A

A

A

A

A

A

A

A

A

A

A

A

B

B

B

B

B

B

B

B

B

B

B

B

B

B

Section A : : JUKI exclusive grease
Section B : : ESSO TEMPLEX

A

−64 −

−65 −

7. OPERATION PANEL

(1) Structure of the operation panel

1

2

5

43

6

7

8

9

!0

!1

!2

!5

!6

!7

!3

!4

!8

!9

@0

@1

@2

@3

@4

@5

@6

@7

@8

@9

#0

There are 3 states below according to back-light colors.

Blue : Input mode .......... Data change is possible.

Green : Sewing mode....Sewing possible state

Yellow : Error state........Some error occurs.

−66 −

No.

1

2

3

4

5

6

7

8

9

!0

!1

!2

!3

!4

!5

NAME

LCD display

READY key

RESET key

MODE key

PRESSER key

WINDER key

PATTERN NO. key

DATA key

COUNTER key

ITEM SELECTION
key

DATA CHANGE
key

SHAPE key

THREAD TENSION AT
PARALLEL SECTION key

THREAD TENSION AT
BAR-TACKING SECTION
key

PITCH key

FUNCTION
Various data such as pattern No.,
shape, etc. are displayed.

Press this key when starting sewing.
Every time this key is pressed, change­over of sewing ready set state and data
set state can be performed.
Press this key when releasing error,
travelling the feed mechanism to its
initial position, counter resetting, etc.

Press this key when changing data of
the memory switches.

This key lifts or lowers the presser, and
the needle bar travels to the right.

When this key is pressed, and the sewing
machine enters the bobbin winding mode.

This key selects pattern No. display.

This key selects data display.

Thus key selects counter display.

This key selects pattern No., data No.,
etc.

This key changes various data.

This key selects shape display.

This key selects thread tension at
parallel section display.

This key selects thread tension at bar­tacking section display.

This key selects pitch of parallel
section.

No.

!6

!7

!8

!9

@0

@1

@2

@3

@4

@5

@6

@7

@8

@9

#0

NAME
OVEREDGING
WIDTH key

BAR-TACKING
WIDTH, LEFT key

BAR-TACKING
WIDTH, RIGHT
key

CLOTH CUT
LENGTH key

CLEARANCE key

KNIFE GROOVE
WIDTH, RIGHT
key

KNIFE GROOVE
WIDTH, LEFT key

COPY key

PRESSER
SELECTION key

FORWARD key

BACKWARD key

CUSTOMIZE key

CUSTOMIZE key

Speed variable
resister

LCDadjustment
variable rsistor

FUNCTION
This key selects overedging width
display.

This key selects left side of bar-tacking
width compensation display.

This key selects right side of bar-tacking
width compensation display.

This key selects cloth cut length display.

This key selects clearance display.

This key selects knife groove width,
right compensation display.

This key selects knife groove width, left
compensation display.

Press this key when copying pattern.

This key selects presser type.

This key makes the feed mechanism
travel forward stitch by stitch.

This key makes the feed mechanism
travel backward stitch by stitch.

This is a short cut key that customizing is
possible. Registration of short cut to setting
display of an optional pattern is possible,

This is a short cut key that customizing is
possible. Registration of short cut to setting
display of an optional pattern, sewing
parameter or adjustment data is possible.

Speed increases when this is lifted
upward and decreases when this is
lowered downward.

Light and shade of LCD display can be
adjusted.

Operation panel function list

−67 −

(2) Initial value data for each shape table

No.

S01

S02

S03

S04

S05

S06

S07

S08

S09

S10

S11

S12

S13

S14

S15

S16

S17

S18

S19

S20

S21

S22

S23

S31

S32

S33

S34

S35

S36

S37

S38

S39

S40

S41

S42

S44

S45

S46

S47

S51

S52

S53

S54

S55

S56

S57

S58

S59

S60

S61

S62

S63

S64

S65

S66

S67

S68

S69

S70

S81

S83

S84

S86

S87

S88

S89

Item

Sewing shape

Cloth cutting length

Knife groove width, right

Knife groove width, left

Overedging width, left

Left/right shape ratio (right side in terms of left side)

Pitch at parallel section

2nd bar-tacking length

1st bar-tacking length

Bar-tacking width, right compensation

Bar-tacking width, left compensation

Flow bar-tacking offset, left

Flow bar-tacking offset, right

Eyelet shape length

Number of stitches of eyelet shape

Eyelet width

Eyelet length

Round type shape length

Number of stitches of radial shape

Radial shape reinforcement (with/without)

Pitch at bar-tacking section

1st clearance

2nd clearance

1/2 stitching

Double stitching cross selection

Double stitching width compensation

Number of times of basting

Pitch of basting

Rolling length of basting

Rolling pitch of basting

Rolling width of basting

Compensation before/after needle entry of basting

Compensation left/right needle entry of basting

Compensation of left side position of basting

Compensation of right side position of basting

Speed setting of basting

Sewing together function (without/with)

Width of sewing together

Pitch of sewing together

Left parallel section tension

Right parallel section tension

Left parallel section tension (1st cycle of double stitching)

Right parallel section tension (1st cycle of double stitching)

1st bar-tacking section tension

2nd bar-tacking section tension

Setting of needle thread tension at sewing start

Setting of needle thread tension of basting

ACT timing adjustment at 1st bar-tacking start

ACT timing adjustment at the start of right overedging

ACT timing adjustment at 2nd bar-tacking start

Number of stitches of tie stitching at the start of sewing

Sewing pitch of tie stitching at the start of sewing

Tie stitching width at sewing start

Lengthwise compensation of tie stitching at the start of sewing

Crosswise compensation of tie stitching at the start of sewing

Tie stitching width at sewing end

Number of stitches of tie stitching at sewing end

Lengthwise compensation of tie stitching at the end of sewing

Crosswise compensation of tie stitching at the end of sewing

Knife motion (With/without)

Knife at 1st cycle of double stitching (Without/with)

Max. speed limitation

Pitch of going

Width of going

Pitch of returning

Width of returning

12.7

0.10

0.10

1.70

100

0.35

1.0

1.0

0.0

0.0

–

–

–––––––

0.30

1.5

1.3
Single

<

0.0

0

4.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

120

120

6060353525

80

000

3

0.00

0.6

0.0

0.0

0.630.0

0.9

With

Without

3600

–––

–

Unit

mmmmmm

mm%mmmmmmmmmmmmmm

mm

Stitch

mmmmmm

Stitch

mmmmmm

mm

Time

mmmmmmmmmmmmmm

mm

rpm

mm

mm

Stitch

Stitch

Stitch

Stitch

mmmmmm

mm

Stitch

mm

mm

rpm

mmmmmm

mm

12.7

0.10

0.10

1.70

100

0.35

–––––––––

–

2.0

–

–

0.30

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

6060606060

602580

0

0

0

3

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

1.0–0.0

0.0

–

–––––

2.0

3

Without

0.30

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

120

120

60

60

120

352580

000

3

0.00

0.6

0.0

0.0

0.6

3

0.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

–––––––––

–

2.0

3

Without

Å[

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

120

120

60

60

353525

80

000

3

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

1.5–0.0

0.0

–––––

–

2.0

3

Without

0.30

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

120

120

6060353525

80

000

3

0.00

0.6

0.0

0.0

0.630.0

0.0

With

Without

3600

–

–––

12.7

0.10

0.10

1.70

100

0.35

3.0

–––

0.85

0.85

–

–

–

–

2.0

3

Without

0.30

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

120

120

6060353525

80

000

3

0.00

0.6

0.0

0.7

0.630.0

0.7

With

Without

3600

–––

–

12.7

0.10

0.10

1.4

100

0.35

1.0–0.0

0.0

–

–

2.031.0

3.0

–

–

–

0.30

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

60606060606025

80

000

3

0.00

0.6

0.0

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.4

100

0.35

–––––

–

2.0

3

1.0

3.0

2.0

3

Without

–

1.5

1.3
Single

<

0.0

0

4.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

60

60606060602580

000

3

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.4

100

0.35

1.5–0.0

0.0

–

–

2.031.0

3.0

–

–

–

0.30

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

6060606060

602580

0

0

0

3

0.00

0.6

0.0

0.0

0.630.0

0.0

With

Without

3600

–––

–

12.7

0.10

0.10

1.4

100

0.35

3.0

–––

0.85

0.85

2.0

3

1.0

3.0

–––

0.30

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

60606060606025

80

000

3

0.00

0.6

0.0

0.7

0.6

3

0.0

0.7

With

Without

3600

–

–

–

–

12.7

0.10

0.10

1.70

100

0.35

–––––––

–

–

–

2.0

–

–

0.25

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

606060

6060602580

000

3

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

1.0–0.0

0.0

–––––

–

2.0

–

–

0.30

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

60606060606025

80

000

3

0.00

0.6

0.0

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

1.0–0.0

0.0

–––

–––

2.0

–

–

0.25

1.5

1.3
Single

<

0.0

0

4.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

60

60

6060606025

80

000

3

0.00

0.6

0.0

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

1.5–0.0

0.0

–––––

–

2.0

–

–

0.25

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

6060606060

60

25

80

000

3

0.00

0.6

0.0

0.0

0.630.0

0.0

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

3.0

–––

0.85

0.85

–––

–

2.0

–

–

0.25

1.5

1.3
Single

<

0.0

0

4.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

60606060606025

80

000

3

0.00

0.6

0.0

0.7

0.6

3

0.0

0.7

With

Without

3600

–––

–

12.7

0.10

0.10

1.4

100

0.35

–––––

–

2.031.0

3.0

2.0

–

–

0.25

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

606060

60

606025

80

0

003

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.4

100

0.35

–––

–

–

–

2.031.0

3.0

2.0

–

–

0.30

1.5.

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

60606060606025

80

000

3

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–

–

–

–

12.7

0.10

0.10

1.70

100

0.35

–

1.0

0.0

0.0

–––

–

–

–

2.0

3

Without

0.30

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

120

120

60

60

30

120

25

80

000

3

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

–

1.0

0.0

0.0

–––––

–

2.0

–

–

0.25

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

60606060606025

80

000

3

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

–

1.0

0.0

0.0

–

–

–––

–

2.0

–

–

0.30

1.5

1.3
Single

<

0.0

0

4.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

60

60606060602580

000

3

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

1.5

1.0

0.0

0.0

–––––––

–

–

0.30

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

6060606060

60

25

80

000

3

0.00

0.6

0.0

0.0

0.630.0

0.0

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

3.0

1.0

0.0

0.0

0.85

0.85

–––––––

0.30

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

60606060606025

80

000

3

0.00

0.6

0.0

0.7

0.6

3

0.0

0.7

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

–––––––––

–

2.0

3

Without

0.25

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

606060

60

606025

80

0

0

0

3

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

–––

–––––––

2.0

3

Without

0.30

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

60606060606025

80

000

3

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–

–––

12.7

0.10

0.10

1.70

100

0.35

–––––––

–––

2.0

3

Without

0.25

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

60

60

6060606025

80

000

3

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–––

–

12.7

0.10

0.10

1.70

100

0.35

–––––––––

–

2.0

–

–

0.25

1.5

1.3
Single

<

0.004.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

Without

2.0

2.0

6060606060

60

25

80

0

0

0

3

0.00

0.6

1.5

0.0

0.630.0

0.9

With

Without

3600

–––

–

13.0

–––––––––

–

–––––––––––

–––

3

4.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

–––

60

60

–

–

–

–

25

80

–0–

3

0.00

0.6

0.0

0.0

0.6

3

0.0

0.0

–

–

3600

0.80

1.7

0.80

1.7

19.1–0.10

–

–––––––––

–

–––––

–

2.0

2.0

–––

2

4.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

–

–

–

60

60

–––

–

25

80

–

0–3

0.00

0.6

0.0

0.0

0.630.0

0.0

With

–

3600

0.80

1.7

0.80

1.7

19.1

0.10

–––––––

–

–––––––––

–

2.0

2.0

–––

2

4.0

8.0

0.8

1.5

1.5

0.0

0.0

0.0

2000

–––

60

60

–

–––

25

80

–0–

3

0.00

0.6

0.0

0.0

0.6

3

0.0

0.0

With

–

3600

0.80

1.7

0.80

1.7

19.1

0.10

0.10

–

–––––––––––

–––––

2.0

2.0
Single

<

–

–

–––––––––

–

–

–

60

60

–––

–

25

---

–

0–3

0.00

0.6

0.0

0.0

0.630.0

0.0

With

–

3600

0.80

1.7

0.80

1.7

Shape selection Level 3 (30 shapes)

Shape selection Level 2 (20 shapes)

Shape selection Level 1 (12 shapes)

−68 −

8. VARIOUS DATA LIST

(1) Sewing data list

Sewing data are those that can be inputted to 99 patterns from pattern 1 to 99 and can be inputted to each pattern.
The sewing machine has been set in the state that the data which is necessary to set “With/without edit” cannot be
selected at the time of your purchase. Change over the function to “With edit” if necessary for the use. / Refer to

12. Method of setting sewing data with/without edit (Instruction Manual).

No.

S01

S02

S03

S04

S05

S06

S07

S08

S09

Item

Sewing shape

This item selects the shape from among the sewing shapes of 30
different kinds which the sewing machine has.

* Only 12 kinds of standard sewing shapes can be selected at the
time of your purchase. When increasing the kinds of shapes,
perform setting of K04 Sewing shape selection level$ of memory
switch data. / Refer to 8.-(2) Memory switch list.

Cloth cut length

This item sets the length of cloth that is cut by cloth
cutting knife. However, in case of bar-tack shape (Nos.
27, 28, 29, and 30 of S01), sewing length is set.
By making effective U19 Function of plural motions of cloth
cutting knife of memory switch data, make the plural motions of
knife by the knife size set in the item U18 Cloth cutting knife

size, and the sewing product is cut. / Refer to 8.-(2) Memory
switch list.

Knife groove width, right

This item sets the clearance between cloth cutting
knife and right parallel section.

Knife groove width , left

This item sets the clearance between cloth cutting
knife and left parallel section.

Overedging width, left

This item sets the overedging width of left parallel
section.

Ratio of right and left shapes

This item sets enlargement/reduction ratio of right side
shape making the knife position as the center.

Pitch at parallel section

This item sets sewing pitch of left and right parallel
sections.

2nd bar-tacking length

This item sets length of bar-tacking on the front side.

1st bar-tacking length

This item sets length of bar-tacking on the rear side.

Setting range

1 to 30

(30 shapes)

3.0 to 120.0

-2.00 to 2.00

-2.00 to 2.00

0.10 to 5.00

50 to 150

0.200 to 2.500

0.2 to 5.0

0.2 to 5.0

Edit unit

1

0.1mm

0.05mm

0.05mm

0.05mm

1%

0.025mm

0.1mm

0.1mm

Remarks

–

–

–

–

–

–

–

–

–

–

Bottom
of square
type

Bottom of
flow

Bottom of
straight bar­tacking

Top of square
type

Refer to 2. Standard sewing
shape list.

* 1 : Displayed according to the shape
* 2 : Displayed when it is set to with edit. Refer to 12. Method of setting sewing data with/without edit (Instruction

Manual).

* 3 : Displayed when the function is selected.

−69 −

Item

Compensation of bar-tacking width, right

This item adjusts right side outer shape of bar-tacking
section in terms of overedging section.

Compensation of bar-tacking width, left

This item adjusts left side outer shape of bar-tacking
section in terms of overedging section.

Flow bar-tacking offset, left

This item sets length to form bar-tacking section of
flow bar-tacking shape.

Flow bar-tacking offset, right

This item sets length to form bar-tacking section of
flow bar-tacking shape.

Eyelet shape length

This item sets upper side length from center of eyelet
of eyelet shape.

Number of stitches of eyelet shape

This item sets number of stitches in the upper 90˚ of
eyelet shape.

Eyelet width

This item sets crossuise size of the inside of eyelet
shape. Actual needle entry point is the dimension to
which S04 Knife groove width, left is added.

Eyelet length

This item sets lengthwise size of the inside of eyelet
shape.

Round type shape length

This item sets upper length from the center of round
type shape.

Number of stitches of radial shape

This item sets number of stitches in the upper 90˚ of
radial shape.

Reinforcement of radial shape

This item sets with/without reinforcement stitching of radial shape.

Pitch at bar-tacking section

This item sets sewing pitch of bar-tacking section.

No.
S10

S11

S12

S13

S14

S15

S16

S17

S18

S19

S20

S21

Setting range

-1.00 to 1.00

-1.00 to 1.00

0.00 to 3.00

0.00 to 3.00

1.0 to 10.0

1 to 8

1.0 to 10.0

1.0 to 10.0

1.0 to 5.0

1 to 8

–

0.200 to 2.500

Edit unit

0.05mm

0.05mm

0.05mm

0.05mm

0.1mm

1 stitch

0.1mm

0.1mm

0.1mm

1 stitch

–

0.025mm

Remarks

–

–

*1

*1

*1

*1

*1

*1

*1

*1

*1, *2

–

: With : Without

Top of
square
type

Bottom of
straight bar­tacking

Bottom of
square type

Top of
round
type

Bottom
of round
type

Top of
Radial
type

Bottom
of radial
type

Top of
semilunar
type

Bottom of
semilunar
type

Top of
square
type

Bottom
of square
type

Top of
round
type

Bottom of
round
type

Top of
semilunar
type

Bottom of
semilunar
type

Bottom of

straight

bar-tacking

Bottom of

flow bar-

tacking

−70 −

NO.
S22

S23

S31

S32

S33

S34

S35

S36

S37

S38

S39

S40

S41

Item

1st clearance

This item sets the clearance between 1st bar-tacking
and knife groove. This item is applied to all shapes.

2nd clearance

This item sets the clearance between 2nd bar-tacking
and knife groove.This item is applied to all shapes.

Single/double stitching

This item selects single or double stitching.

Double stitching cross selection

This item selects overlapping stitching or cross stitching at the
needle entry of parallel section when setting double stitching.

Compensation of double stitching width

This item sets amount to narrow overedging width of
1st cycle when setting double stitching.

Number of times of basting

This item sets number of times of basting.

Basting pitch

This item sets pitch at the time of performing basting.

Rolling length of basting

This item sets rolling length of needle thread when
performing basting.

Rolling pitch of basting

This item sets rolling pitch of needle thread when
performing basting.

Rolling width of basting

This item sets rolling width of needle thread when
performing basting.

Lengthwise compensation of needle entry of
basting

This item sets the amount to move needle entry position
back and forth when performing basting more than two
cycles.

Crosswise compensation of needle entry of
basting

This item sets the amount to move needle entry position
to the right or left when performing basting more than
two cycles.

Compensation of left side position of basting

This item sets the amount to move the sewing reference
position of basting from the center of left overedging to
the right or left.

Setting range

0.0 to 4.0

0.0 to 4.0

–

–

0.0 to 2.0

0 to 9

1.0 to 5.0

2.0 to 20.0

0.2 to 5.0

0.0 to 4.0

0.0 to 2.5

0.0 to 1.0

-2.0 to 2.0

Edit unit

0.1mm

0.1mm

–

–

0.1mm

1 time

0.1mm

0.1mm

0.1mm

0.1mm

0.1mm

0.1mm

0.1mm

Remarks

–

–

–

*3

*3

–

*3

*3

*3

*3

*2, *3

*3

*2, *3

: Double stitching



: Cross stitching

: Without basting

: With basting
(Setting of number of times)

Double
stitching

Single
stitching

−71 −

NO.
S42

S44

S45

S46

S47

S51

S52

S53

S54

S55

S56

S57

S58

Item

Compensation of right side position of
basting

This item sets the amount to move the sewing
reference position of basting from the center of right
overedging to the right or left.

Speed setting of basting

This item sets speed of basting.

Sewing together function

This item selects the function when performing sewing together
first.

When "With sewing together" is selected :
Sewing is performed in the order of sewing together / basting /
normal sewing.

Width of sewing together

This item sets sewing width when performing sewing
together.

Pitch of sewing together

This item sets sewing pitch when performing sewing
together.

Left parallel section tension

This item sets needle thread tension at left parallel
section.

Right parallel section tension

This item sets needle thread tension at right parallel
section.

Left parallel section tension (1st cycle of
double stitching)

This item sets needle thread tension at left parallel
section of 1st cycle at the time of double stitching.

Right parallel section tension (1st cycle of
double stitching)

This item sets needle thread tension at right parallel
section of 1st cycle at the time of double stitching.

Tension at 1st bar-tacking section

This item sets needle thread tension at 1st bar-tacking
section.

Tension at 2nd bar-tacking section

This item sets needle thread tension at 2nd bar-tacking
section.

Setting of needle thread tension at the start
of sewing

This item sets needle thread tension of tie stitching at
the start of sewing.

Setting of needle thread tension of basting

This item sets needle thread tension of basting.

Setting range

-2.0 to 2.0

400 to 4200

–

1.0 to 10.0

0.2 to 5.0

0 to 200

0 to 200

0 to 200

0 to 200

0 to 200

0 to 200

0 to 200

0 to 200

Edit unit

0.1mm

100rpm

–

0.1mm

0.1mm

1

1

1

1

1

1

1

1

Remarks

*2, *3

*3

–

*2, *3

*2, *3

–

*2

*2, *3

*2, *3

–

*2

–

*3

: Without sewing

together

: With sewing

together

−72 −

NO.
S59

S60

S61

S62

S63

S64

S65

S66

S67

S68

S69

S70

Item

ACT timing adjustment at the start of 1st bar­tacking

This item adjusts needle thread tension output start
timing at 1st bar-tacking section.

ACT timing adjustment at the start of right
overedging

This item adjusts needle thread tension output start
timing at right overedging section.

ACT timing adjustment at the start of 2nd
bar-tacking

This item adjusts needle thread tension output start
timing at 2nd bar-tacking section.

Number of stitches of tie stitching at the start
of sewing

This item sets number of stitches of tie stitching at
the start of sewing.

Sewing pitch of tie stitching at the start of
sewing

This item sets sewing pitch pf tie stitching at the start
of sewing.

Tie stitching width at the start of sewing

This item sets tie stitching width at the start of sewing.

Lengthwise compensation of tie stitching at
the start of sewing

This item sets start position of tie stitching in
lengthwise direction at the start of sewing.

Crosswise compensation of tie stitching at
the start of sewing

This item sets start position of tie stitching in crosswise
direction at the start of sewing.

Tie stitching width at the end of sewing

This item sets tie stitching width at the end of sewing.

Number of stitches of tie stitching at the end
of sewing

This item sets number of stitches of tie stitching at
the end of sewing.

Lengthwise compensation of tie stitching at
the end of sewing

This item sets start position of tie stitching in
lengthwise direction at the end of sewing.

Crosswise compensation of tie stitching at
the end of sewing

This item sets start position of tie stitching in crosswise
direction at the end of sewing.

Setting range

-5 to 5

-5 to 5

-5 to 5

0 to 8

0.00 to 0.70

0.0 to 3.0

0.0 to 5.0

0.0 to 2.0

0.1 to 1.5

0 to 8

0.0 to 5.0

0.0 to 2.0

Edit unit

1 stitch

1 stitch

1 stitch

1 stitch

0.05mm

0.1mm

0.1mm

0.1mm

0.1mm

1 stitch

0.1mm

0.1mm

Remarks

*2

*2

*2

–

*2

–

*2

*2

–

–

*2

*2

* 1 : Displayed according to the shape
* 2 : Displayed when it is set to with edit. Refer to 12. Method of setting sewing data with/without edit (Instruction

Manual).

* 3 : Displayed when the function is selected.

−73 −

NO.
S81

S83

S84

S86

S87

S88

S89

Item

Knife motion

This item sets "With/without motion" of normal cloth cutting knife.

Knife motion at 1st cycle of double stitching

This item sets "With/without motion" of cloth cutting knife at 1st
cycle when double stitching is performed.

Maximum speed limitation

This item sets max. speed limitation of the sewing
machine. The maximum value of data edit is equal to
the number of revolutions of K07 Maximum speed
limitation of the memory switch data.

/ Refer to 8.-(2) Memory switch list

Pitch of going

This item sets sewing pitch of going side of bar-tacking
shape (Shape Nos. 27, 28, 29 and 30 of S01).

Width of going

This item sets width of going side of bar-tacking shape
(Shape Nos. 27, 28, 29 and 30 of S01).

Pitch of returning

This item sets sewing pitch of returning side of bar­tacking shape (Shape Nos. 27, 28, 29 and 30 of S01).

Width of returning

This item sets width of returning side of bar-tacking
shape (Shape Nos. 27, 28, 29 and 30 of S01).

Setting range

–

–

400 to 4200

0.200 to 2.500

0.1 to 3.0

0.200 to 2.500

0.1 to 3.0

Edit unit

–

–

100rpm

0.025mm

0.05mm

0.025mm

0.05mm

Remarks

–

*2, *3

–

–

–

–

–

: Normal knife

motion OFF

: Normal knife

motion OFF

: Normal knife

motion ON

: Normal knife

motion ON

* 1 : Displayed according to the shape
* 2 : Displayed when it is set to with edit. Refer to 12. Method of setting sewing data with/without edit (Instruction

Manual).

* 3 : Displayed when the function is selected.

−74 −

(2) Memory switch data list

1) Level 1

Memory switch data (level 1) are the motion data that the sewing machine has in common and the data
that operate on all sewing patterns in common.

No.

U01

U02

U03

U04

U05

U06

U07

U08

U09

U10

U11

U12

U13

U14

U15

U16

U17

Item

Presser lifter maximum position

Height of maximum position of pedal operation is set.

Presser lifter intermediate position

Height of intermediate position of pedal operation is
set.

Presser lifter cloth setting position

Height of cloth setting position of pedal operation is
set.

Pedal toe down position of 2-pedal (%)

Operation feeling at the time of 2-pedal is set. Refer
to the item below.

Lifting position of presser foot of 2-pedal (%)

Operation feeling at the time of 2-pedal is set.

Needle thread tension at sewing end setting

Needle thread tension at thread trimming
setting
Needle thread tension of basting for sewing
together setting
Soft-start speed setting 1st stitch

Soft-start speed setting 2nd stitch

Soft-start speed setting 3rd stitch

Soft-start speed setting 4th stitch

Soft-start speed setting 5th stitch

Kind of presser

Set the kind of the presser. / 7.- (4) Inputting the presser type (Refer
to Instruction Manual.)

Presser size width

When type 5 of U14 Kind of presser is set, input the
width of the presser.

Presser size length

When type 5 of U14 Kind of presser is set, input the
length of the presser.

Sewing start position (Feed direction)

Sewing start position in terms of presser is set.
Set this item when starting position is desired to be
shifted due to overlapped section or the like.

Setting range

0 to 17.0

0 to 14.0

0 to 14.0

5 to 95

5 to 95

0 to 200

0 to 200

0 to 200

400 to 4200

400 to 4200

400 to 4200

400 to 4200

400 to 4200

–

3.0 to 10.0

10.0 to 120.0

2.5 to 110.0

Edit unit

0.1mm

0.1mm

0.1mm

1%

1%

1

1

1

100rpm

100rpm

100rpm

100rpm

100rpm

–

0.1mm

0.5mm

0.1mm

Initial value

14.0mm

6.0mm

0.0mm

80%

50%

35

35

60

800rpm

800rpm

2000rpm

3000rpm

4000rpm

Type 1

3.0mm

10.0mm

2.5mm

Pedal toe down amount

U04 Pedal toe
don position of 2­pedal (%)

Presser lifting amount

U01 Presser lifter maximum
position

U05 Lifting position of
presser foot of 2-pedal (%)

−75 −

Item

Cloth cutting knife size

Input knife size used.

Function of plural motions of cloth cutting knife
Ineffective/effective

Function of thread breakage detection
Ineffective/effective

Selection of presser position at the time of ON of
READY key (Up/Down)

Presser foot position when READY key is pressed is set.

Selection of the position of presser foot at the time of
the end of sewing (Up/Down)

This item sets the position of presser foot at the time of the end of
sewing. (Effective only at the time of 1-pedal settin

Needle thread trimming motion start
distance

Distance from the start of sewing to the start of needle
thread trimmer release motion is inputted.

Bobbin thread trimming motion start
distance

Distance from the start of sewing to the start of bobbin
thread trimmer release motion is inputted.

Counter updating unit

Unit to update sewing counter is set.

Total number of stitches Non-display/Display

No.

U18

U19

U20

U21

U22

U23

U24

U25

U26

Setting range

3.0 to 32.0

–

–

–

–

0 to 15.0

0 to 15.0

1 to 30

–

Edit unit

0.1mm

–

–

–

–

0.1mm

0.1mm

1

–

Initial value

32.0mm

Ineffective

Effective

Presser Up

Presser Up

1.0mm

1.5mm

1

Non-display

Ineffective Effective

Presser up

Presser down

Presser up

Presser down

DisplayNon-display

Ineffective Effective

−76 −

2) Level 2

Press key for three seconds and it is possible to edit.

NO.
K01

K02

K03

K04

K05

K06

K07

K08

K09

K10

K11

K12

Item

Pedal selection

Pedal type is set. /

3. How to use the pedal (Refer to Instruction Manual.)

Parameter setting change Permitted/Prohibited

Prohibition of change of sewing data and memory switch data is
set.

Function of prohibition of selection of kind of presser
Permitted/Prohibited

Prohibition of change of U14 Kind of presser is set.

Sewing shape selection level

Number of sewing shapes which can be sewn can be increased.
(Max. 30 shapes)

Cloth cutting knife power

Output power of cloth cutting knife is set.
0 : Min. power / 3 : Max. power

Selection of machine type

Type of sewing machine head is set.
0 : Standard type 1 : Dry head type

Max. speed limitation speed setting

Max. speed of sewing machine can be limited.
When K06 Selection of machine type is set to dry
head type, max. speed is automatically limited to 3,300
rpm.

Compensation of unsteady needle thread tension

Output value of needle thread tension is wholly offset
and compensated.

Output time of needle thread tension changed value

When data related to needle thread tension is changed, the
changed value is output as long as the set-up time.

Function of origin retrieval each time

Origin retrieval is performed after completion of sewing or completion of
cycle.

Needle up by reverse run Permitted/Prohibited

When U01 Presser lifter maximum position is set to 14.0 mm or
more, motion of needle up by reverse run is automatically performed
and the machine stops. Prohibition of the motion can be set.

Knife solenoid lowering time setting

Setting range

–

–

–

–

0 to 3

0 to 1

400 to 4200

-30 to 30

0 to 20

–

–

25 to 100

Edit unit

–

–

–

–

1

1

100rpm

1

1s

–

–

5ms

Initial value

2-pedal

Change

permitted

Change

permitted

12 shapes

1

0 (Standard type)

3600 rpm

0

0s

Without

Permitted

35

Change

permitted

Change

prohibited

12 shapes 20 shapes

30 shapes

Without
output

Output of set­up time

Without

After end
of sewing

After end
of cycle

2-pedal 1-pedal

(Without intermediate position)

1-pedal

(With intermediate position)

Change

permitted

Change

prohibited

Needle up by
reverse run
prohibited

Needle up by
reverse run
permitted

−77 −

Item

Knife solenoid lifting time setting

Knife cylinder lowering time (Optional)

Y-feed motor origin compensation

Needle-rocking motor origin compensation

Presser lifter motor origin compensation

Pattern selection function under sewing mode
Ineffective/effective

Thread trimming on the way in continuous stitching
Permitted/Prohibited

Cloth cutting knife return power

This item sets output power at the time of returning
the cloth cutting knife.
0 : Min. power / 3 : Max. power

Release amount of bobbin thread trimmer
at the start of sewing

This item sets the amount of releasing the bobbin
thread trimmer at the statrt of sewing.

Needle thread trimming adjustment mode
start

Needle thread trimming adjustment motion starts with
READY key ON.

Bobbin thread trimming adjustment mode
start

Bobbin thread trimming adjustment motion starts with
READY key ON.

Sensor check mode start

Sensor check starts with READY key ON.

No.
K13

K14

K15

K16

K17

K18

K19

K20

K21

K51

K52

K53

Setting range

5 to 100

5 to 300

-120 to 400

-10 to 10

-100 to 10

–

–

0 to 3

0 to 15

–

–

–

Edit unit

5ms

5ms

1 pulse

(0.025mm)

1 pulse

(0.05mm)

1 pulse

(0.05mm)

–

–

1

1 pulse

–

–

–

Initial value

15

50

0

0

0

Ineffective

Permitted

0

8

–

–

–

Effective

Ineffective

Permitted

Prohibited

* When READY key is pressed at K53 , the screen below is displayed.

*

1 Pedal volume
2 Pedal sensor
3 Thread breakage detection
4 Cloth cutting knife sensor
5 Head tilt sensor
6 STOP switch
7 Needle rocking sensor
8 Machine woodruff plate sensor

−78 −

S18

S22

S07

S05

S02

S23

S18

S03
S04

S11

S10

S18

S22

S07

S21

S05

S02

S23

S08

S03

S04

+ –

– +

S18

S21

S22

S07

S21

S05

S02

S23

S18

S03

+ –

– +

S11

S10

S21

S09

S22

S07

S21

S05

S02

S23

S08

S03
S04

9. EXPLANATION OF SHAPE

(1) Square type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S09 : 1st bar-tacking length
S10 : Bar-tacking width, right

compensation

S11 : Bar-tacking width, left

compensation

S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

(3) Radial square type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S10 : Bar-tacking width, right

compensation
S11 : Bar-tacking width, left

compensation
S18 : Round type shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(2) Round type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S18 : Round type shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(4) Radial type

S02 : Cloth cutting length
S03 : Knife hgroove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S18 : Round type shape length
S22 : 1st clearance
S23 : 2nd clearance

S04

−79 −

S14

S04

S05

S22

S07

S05

S02

S23

S18

S03
S04

S10

S05

S14

S04

S22

S07

S11
S05

S02

S23

S08

S03
S04

S21

S22

S23

S13S12

S18

S07

S21

S05

S02

S08

S03

S04

S18

S22

S07

S21

S05

S02

S23

S08

S03

S04

S11 S10

(5) Radial straight bar-tacking type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S10 : Bar-tacking width, right

compensation

S11 : Bar-tacking width, left

compensation
S18 : Round type shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

(7) Eyelet square type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S10 : Bar-tacking width, right

compensation
S11 : Bar-tacking width, left

compensation
S14 : Eyelet shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(6) Radial flow bar-tacking type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S12 : Flow bar-tacking offset, left
S13 : Flow bar-tacking offset,

right
S18 : Round type shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(8) Eyelet radial type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S14 : Eyelet shape length
S18 : Round type shape length
S22 : 1st clearance
S23 : 2nd clearance

+ –

– +

+ –

– +

−80 −

S12

S13

S14

S05

S22

S07

S21

S05

S02

S23

S08

S03

S04

S04

S11

S10

S14

S05

S22

S07

S21

S05

S02

S23

S08

S03

S04

S04

(9) Eyelet straight bar-tacking type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S10 : Bar-tacking width, right

compensation

S11 : Bar-tacking width, left

compensation
S14 : Eyelet shape length
S21 : Pitch at bar-tacking section
S22 : 1st clearance
S23 : 2nd clearance

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

(11) Semilunar type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(10) Eyelet flow bar-tacking type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S12 : Flow bar-tacking offset,

left

S13 : Flow bar-tacking offset,

right
S14 : Eyelet shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(12) Round square type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S10 : Bar-tacking width, right

compensation
S11 : Bar-tacking width, left

compensation
S18 : Round type shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

+ –

– +

S21

S08

S22

S07

S21

S05

S02

S23

S08

S03

S04

S11

S10

S21

S18

S22

S07

S21

S05

S02

S08

S03

S04

S23

+ –

– +

−81 −

(13) Semilunar square type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S10 : Bar-tacking width, right

compensation

S11 : Bar-tacking width, left

compensation

S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

(15) Semilunar flow bar-tacking type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S12 : Flow bar-tacking offset,

left
S13 : Flow bar-tacking offset,

right
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(14) Semilunar straight bar-tacking type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S10 : Bar-tacking width, right

compensation

S11 : Bar-tacking width, left

compensation

S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(16) Eyelet semilunar type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S14 : Eyelet shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

S12

S13

S21

S22

S07

S21

S05

S02

S23

S08

S03

S04

S08

S11

S10

S21

S22

S07

S21

S05

S02

S23

S08

S03

S04

S08

S11

S10

S21

S08

S22

S07

S21

S05

S02

S23

S08

S03

S14

S05

S22

S07

S21

S05

S02

S23

S08

S03

S04

S04

+ –

– +

+ –

– +

S04

−82 −

(17) Eyelet round type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S14 : Eyelet shape length
S18 : Round type shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

(19) Square semilunar type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S09 : 1st bar-tacking length
S10 : Bar-tacking width, right

compensation
S11 : Bar-tacking width, left

compensation
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(18) Square radial type

S02 : Cloth cutting length
S03 : Kinfe groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S09 : 1st bar-tacking length
S10 : Bar-tacking width, right

compensation

S11 : Bar-tacking width, left

compensation
S18 : Round type shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(20) Square round type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S09 : 1st bar-tacking length
S10 : Bar-tacking width, right

compensation
S11 : Bar-tacking width, left

compensation
S18 : Round type shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

S14

S05

S22

S07

S21

S05

S02

S23

S18

S03

S04

S04

S21

S11 S10

S22

S07

S21

S05

S02

S23

S18

S03

S04

S09

S21

S11 S10

S22

S07

S21

S02

S23

S08

S03

S04

S09

S10

S11

S22

S07

S21

S05

S02

S23

S18

S03
S04

S09

+ –

– +

S05

+ –

– +

+ –

– +

−83 −

(21) Square straight bar-tacking type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S09 : 1st bar-tacking length
S10 : Bar-tacking width, right

compensation

S11 : Bar-tacking width, left

compensation

S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

(23) Radial semilunar type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S18 : Round type shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(22) Square flow bar-tacking type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S09 : 1st bar-tacking length
S10 : Bar-tacking width, right

compensation

S11 : Bar-tacking width, left

compensation
S12 : Flow bar-tacking offset, left
S13 : Flow bar-tacking offset,

right
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(24) Radial round type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S18 : Round type shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

S07

S21

S11

S10

S22

S21

S05

S02

S23

S08

S03

S04

S09

S12

S13

S22

S07

S21

S05

S02

S08

S03

S04

S18

S23

S22

S07

S21

S05

S02

S23

S18

S03

S04

S18

S21

S11

S22

S07

S21

S05

S02

S08

S03

S04

S09

+ –

– +

S10

+ –

– +

−84 −

(25) Semilunar radial type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S18 : Round type shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

PANEL DISPLAY

(27) Bar-tacking

S02 : Cloth cutting length
S86 : Pitch of going
S87 : Width of going
S88 : Pitch of returning
S89 : Width of returning

(26) Semilunar round type

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S05 : Overedging width, left
S07 : Pitch at parallel section
S08 : 2nd bar-tacking length
S18 : Round type shape length
S21 : Pitch at bar-tacking

section
S22 : 1st clearance
S23 : 2nd clearance

(28) Bar-tacking, right cut

S02 : Cloth cutting length
S04 : Knife groove width, left
S22 : 1st clearance
S23 : 2nd clearance
S86 : Pitch of going
S87 : Width of going
S88 : Pitch of returning
S89 : Width of returning

S86
S88

S22

S02

S23

S87
S89

S04

S86
S88

S02

S87
S89

S21

S07

S21

S05

S02

S23

S18

S03

S04

S08

S22

S07

S21

S05

S02

S23

S18

S03

S04

S08

−85 −

(29) Bar-tacking, left cut

S02 : Cloth cutting length
S03 : Knife groove width, right
S22 : 1st clearance
S23 : 2nd clearance
S86 : Pitch of going
S87 : Width of going
S88 : Pitch of returning
S89 : Width of returning

PANEL DISPLAY PANEL DISPLAY

(30) Bar-tacking, center cut

S02 : Cloth cutting length
S03 : Knife groove width, right
S04 : Knife groove width, left
S22 : 1st clearance
S23 : 2nd clearance
S86 : Pitch of going
S87 : Width of going
S88 : Pitch of returning
S89 : Width of returning

S86

S22

S02

S87 S89

S23

S03

S04

S88

S22

S02

S23

S87
S89

S03

S86
S88

−86 −

2.5 mm + jump feed amount B

A

B

C

D

E

F

H

G

Pattern No. G

Pattern No. E

Pattern No. C

Pattern No. A

Jump feed amount H

Jump feed amount F

Jump feed amount D

10. DETAILED EXPLANATION OF CONTINUOUS STITCHING

* The figure below is an example for reference when the presser of feed 120 mm is used.

For the details, refer to the item “(1) Points of replacement of the feed for 70 mm or 120 mm in 14.
OTHERS.

(1) A series of motions of continuous stitching in the pattern data in the figure on the right side is performed in

the following order and sewing is performed.
Move of jump feed amount B / Sewing of pattern No. A /
Move of jump feed amount D / Sewing of pattern No. C /
Move of jump feed amount F / Sewing of pattern No. E /
Move of jump feed amount H / Sewing of pattern No. G
The actual sewing arrangement is as shown below.

Example for reference

A space of 2.5 mm from the presser to the needle is set when the feed is in the origin position at the time
of delivery.
Therefore, the position of starting sewing of pattern A becomes the space where 2.5 mm is added to jump
feed amount B.

(2) Special continuous stitching

In the continuous stitching, it is possible that thread trimming on the way during continuous stitching cannot
be performed by setting to “Prohibited” of K19 Thread trimming on the way in continuous stitching of
memory switch level 2.
In case of without the setting of K19 Thread trimming in continuous stitching, all jump feed amounts
inputted in the continuous stitching are neglected, and the sewing machine sews the sewing patterns which
have been inputted at the same places.
By this function, the double stitching can be performed using the sewing patterns which are different in
shape or pitch.

−87 −

11. ERROR CODE LIST

Error code

E001

E007

E018

E023

E024

E025

E026

E030

E050

E052

E061

E062

E099

E302

E303

E304

E486

E487

E488

E489

Description

Contact of initialization of EEP-ROM of MAIN CONTROL p.c.b.

When data is not written in EEP-ROM or data is broken, data is automatically
initialized and the initialization is informed.

Main shaft motor-lock

When large needle resistance sewing product is sewn

Type of EEP-ROM is wrong.

When the type of mounted EEP-ROM is wrong

Detection of step-out of presser lifting motor

When step-out of motor is detected at the time when presser lifting motor passes
origin sensor or starts operation.

Pattern data size over

When sewing cannot be performed since total size of continuous stitching data
or size of downloaded data is too large.

Detection of step-out of needle thread trimmer motor

When step-out of motor is detected at the time when needle thread trimmer
motor passes origin sensor or starts operation.

Detection of step-out of bobbin thread trimmer motor

When step-out of motor is detected at the time when bobbin thread trimmer
motor passes origin sensor or starts operation.

Needle bar upper position failure

When needle does not stop at UP position even with needle UP operation at
the time of starting sewing machine.

Stop switch

When stop switch is pressed during machine running.

Thread breakage detection error

When thread breakage has occurred during machine running.

Memory switch data error

When memory switch data is broken or revision is old.

Sewing data error

When sewing data is broken or revision is old.

Interference of knife lowering command with thread trimming
motion

When inserting position of knife command is improper and knife command
interferes with thread trimming motion in case of motion by data from external
input device.

Confirmation of tilt of machine head

When tilt of machine head sensor is OFF.

Z phase sensor error of main shaft motor

Z phase sensor of sewing machine motorencoder is abnormal.

Cloth cutting knife sensor error

When sensor is not OFF while knife is lowered.

Eyelet knife length error

Eyelet knife length is too short to form the shape in case of eyelet shape.

Eyelet shape length error

Eyelet shape length is too short to form the shape in case of eyelet shape.

Flow bar-tacking compensation error

When bar-tacking length is too short to form the shape in case of flow bar­tacking shape.

Knife size error (at the time of plural motions of knife)

When knife size is larger than cloth cutting knife size.

How to recover

Turn OFF the power.

Turn OFF the power

Turn OFF the power.

Possible to re-start after
pressing reset key.

Possible to re-start after
pressing reset key.

Possible to re-start after
pressing reset key.

Possible to re-start after
pressing reset key.

Possible to re-start after
pressing reset key.

Possible to re-start after
pressing reset key.

Possible to re-start after
pressing reset key.

Turn OFF the power.

Turn OFF the power.

Possible to re-start after
pressing reset key.

Possible to re-start after
pressing reset key.

Turn OFF the power.

Turn OFF the power.

Possible to re-enter after
pressing reset key.

Possible to re-enter after
pressing reset key.

Possible to re-enter after
pressing reset key.

Possible to re-enter after
pressing reset key.

Place of recovery

Standard screen

Standard screen

Standard screen

Standard screen

Standard screen

Step screen

Step screen.

Standard screen

Standard screen

Sewing data edit screen
[S17] Eyelet knife length

Sewing data edit screen
[S14] Eyelet shape
length
Sewing data edit screen
[S08] 2nd bar-tacking
length
Sewing data edit screen
[S02] Cloth cut length

Display

−88 −

Description

Presser size over of basting

When stitching data of basting exceeds presser size.

Presser size over of tie stitching at sewing end

When stitching data of tie stitching at sewing end exceeds presser size.

Presser size over of tie stitching at sewing start

When stitching data of tie stitching at sewing start exceeds presser size.

Presser size error (Width direction : right only)

When stitching data exceeds the size of right only of width direction of presser.

Presser size error (Width direction : left only)

When stitching data exceeds the size of left only of width direction of presser.

Presser size error (Length direction : front)

When stitching data exceeds the size of front of length direction of presser.

Presser size error (Width direction : right and left)

When stitching data exceeds the size of both right and left of width direction of
presser.

Presser size error (Length direction : rear)

When stitching data exceeds the size of rear of length direction of presser.

Panel is connected to the machine other than supposed. (Machine
type error)

When machine type code of system is improper in case of initial communication.

Nonagreement of system version

When version of system software is improper in case of initial communication.

Main shaft motor encoder defectiveness or phase-out

When encoder of sewing machine motor is abnormal.

Main motor hole sensor defectiveness or position sensor
defectiveness

When hole sensor or position sensor of sewing machine motor is defective.

Reverse rotation of main shaft motor

When sewing machine motor rotates in reverse direction.

Phase-lack of power

When phase-lack of input power occurs.

Power instantaneous cut detection

When input power is instantaneously OFF.

Overvoltage

When input power is 280V or more.

Low voltage

When input voltage is 150V or less.

Abnormality of main shaft motor IPM

When IPM of servo control p.c.b. is abnormal.

Overcurrent of main shaft motor

When current flows excessively to sewing machine motor.

Abnormality of stepping motor power

When stepping motor power of servo control p.c.b. fluctuates ±15% or more.

Error code

E492

E493

E494

E495

E496

E497

E498

E499

E703

E704

E730

E731

E733

E801

E802

E811

E813

E901

E902

E903

How to recover

Possible to re-enter after
pressing reset key.

Possible to re-enter after
pressing reset key.

Possible to re-enter after
pressing reset key.

Possible to re-enter after
pressing reset key.

Possible to re-enter after
pressing reset key.

Possible to re-enter after
pressing reset key.

Possible to re-enter after
pressing reset key.

Possible to re-enter after
pressing reset key.

Turn OFF the power.

Turn OFF the power.

Turn OFF the power.

Turn OFF the power.

Turn OFF the power

Turn OFF the power.

Turn OFF the power.

Turn OFF the power.

Turn OFF the power.

Turn OFF the power.

Turn OFF the power.

Turn OFF the power.

Place of recovery

Sewing data edit screen
[S40] Basting needle
entry compensation
Sewing data edit screen
[S67] Tie stitching at
sewing end width
Sewing data edit screen
[S64] Tie stitching at
sewing start width
Sewing data edit screen
[S03] Knife groove width,
right or [S06] Ratio of right
and left shapes
Sewing data edit screen
[S04] Knife groove width,
left or [S06] Ratio of right
and left shapes
Standard screen

Sewing data edit screen
[S05] Overedging width,
left
Sewing data edit screen
[S02] Cloth cut length

Display

−89 −

Description

Abnormality of solenoid power

When solenoid power of servo control p.c.b. fluctuates ±15% or more.

Abnormality of temperature of heat sink for servo control p.c.b.

When temperature of heat sink of servo control p.c.b. is 85˚C or more.

Needle rock motor origin retrieval error

When origin sensor signal is not inputted at the time of origin retrieval motion.

Lengthwise feed motor origin retrieval error

When origin sensor signal is not inputted at the time of origin retrieval motion.

Needle thread trimmer motor origin retrieval error

When origin sensor signal is not inputted at the time of origin retrieval motion.

Presser motor origin retrieval error

When origin sensor signal is not inputted at the time of origin retrieval motion.

Bobbin thread trimmer motor origin retrieval error

When origin sensor signal is not inputted at the time of origin retrieval motion.

Abnormality of communication between operation panel and
main CPU

When abnormality occurs in communication.

Abnormality of communication between main CPU and main
shaft CPU

When abnormality occurs in communication.

Abnormality of temperature of heat sink for main control p.c.b.

When temperature of heat sink of main control p.c.b. is 85˚C or more.

Defectiveness of EEP-ROM of main control p.c.b

When data writing to EEP-ROM is not performed.

Defectiveness of writing to EEP-ROM of head relay p.c.b.

When data writing to EEP-ROM is not performed.

When cloth cutting knife does not return

When the knife is held lowered

Error code

E904

E905

E907

E908

E909

E910

E911

E915

E916

E918

E943

E946

E999

How to recover

Turn OFF the power.

Turn OFF the power

Turn OFF the power.

Turn OFF the power

Turn OFF the power.

Turn OFF the power

Turn OFF the power.

Turn OFF the power

Turn OFF the power.

Turn OFF the power

Turn OFF the power.

Turn OFF the power

Turn OFF the power

Place of recovery

Display

−90 −

12. ELECTRICAL COMPONENTS

(1) Change of data ROM

For this machine, EEPROMs below can be used as data ROM.
32k byte EEPROM is mounted as standard. However, when a larger capacity is required in case of the
external input or the like, it can be upgraded to 128k byte EEPROM.

When mounting the data ROM, perform as shown in the figure below.
In addition, be sure to perform jumper setting.

Capacity
32k byte

128k byte

Name of part
HN58C256AP-10 (HITACHI)
HN58C1001P-15 (HITACHI)

JUKI Part No.
HL011940000
HL020470000

Remarks

Provided as standard

(2) Adaptation to the high voltage

This machine is adaptable to single-phase 100 to 120V and 3-phase 200 to 240V power voltage.
When using this machine with 380 to 415V power voltage, the externally installed transformer is separately
required.

A complete set of transformer main body, connecting cord, fitting screws, etc. is included in the
aforementioned part. Therefore, it is possible to be adaptable to the high voltage with simple work.
When installing it, refer to the Instruction Manual for installation attached to the transformer.

(3) DIP switch

Keep DIP switches mounted on the respective printed circuit boards in the state of delivery (all OFF).

JUKI Part No.

40005422

Name of part

High voltage transformer (asm.)

2 4

2 4

1 3

1 3

W1 W1

Jumper

Jumper

Mount so that this side is vacant.

When mounting 32k byte When mounting 128k byte

U11 U11

−91 −

(4) Adaptation to the PK pedal

PK pedals below can be connected to the machine.

When using PK pedal, the relay cord below is necessary.

1. Connecting procedure

(1)Remove connector CN41 (white • 6P) of MAIN p.c.b. in the control box. The connector which has been

removed is the connector of the pedal provided as standard. Use it in case of need.
(2)Connect connector (CN41) of the relay cord to CN41.
(3)Connect connector (CN41) of the relay cord with the connector of PK pedal. In case of PK-57, the

connection is completed with the work above. Besides, in case of PK-57, the earth line protrudes at the

connector section. However, it is not necessary to connect it.
(4)In case of PK-57, remove the cover and perform the change of connection of the micro switch located

inside the pedal. Change the connection of micro switch (upper side) in which the switch button is

pressed when the pedal is set to free from NC (normal close) to NO (normal open).

2. Setting procedure

(1)In case of PK-51

1 Set L07 (effective/ineffective) of level 3 of the memory switch to “Effective”.

2 Select “PK-51” with K01 (pedal selection) of level 2 of the memory switch.

(2)In case of PK-57

Select “Without 1-pedal intermediate position” with K01 (pedal selection) of level 2 of the memory

switch.

Name of part

PK-51
PK-57

JUKI Part No.
GPK510010B0
GPK570010B0

Remarks

2-pedal type for standing work

1-pedal 2-step type for standing work

Name of part
PK pedal relay cord (asm.)

JUKI Part No.
40003493

Remarks
Common to PK-51 and PK-57

−92 −

(5) Fuse list

Fuse list mounted on the respective printed circuit boards in the control box is shown in the table below.

1 For stepping motor power supply protection

5A (time-lag fuse)

2 For solenoid and stepping motor power supply

protection

3.15A (time-lag fuse)

3 For control power supply protection

2A (fast-blow type fuse)

1

2

3

No.

1

2

3

Location

SDC p.c.b. F1

SDC p.c.b. F2

SDC p.c.b. F3

SDC p.c.b. F4

SDC p.c.b F5

FLT p.c.b. F1

FLT p.c.b. F2

FLT p.c.b. F3
(FLT-T p.c.b. only)

Kind

250V/5A time-lag fuse ø5.2 X L20

250V/3.15A time-lag fuse ø5.2 X L20

250V/2A fast-blow type fuse ø5.2 X
L20

250A/4A time-lag fuse ø5.2 X L20

250V/4A time-lag fuse ø5.2 X L20

250V/20A time-lag fuse ø6.35 X L30

250V/20A time-lag fuse ø6.35 X L30

250V/20A time-lag fuse ø6.35 X L30

JUKI Part No.

HF0013050P0

HF00130315S

HF003000200

HF0089040P0

HF0089040P0

HF006802000

HF006802000

HF006802000

Remarks
For stepping motor/knife solenoid
power (+48V) protection
Mounted on the fuse clip
1 pc. is packed together as
accessories.
For stepping motor/tension
solenoid power (+33V) protection
Mounted on the fuse clip
1 pc. is packed together as
accessories.
For LCD/fan motor power (+24V)
protection
Mounted on the fuse clip
1 pc. is packed together as
accessories.
For switching power primary
circuit protection
Fixed on p.c.b. by soldering
For switching power primary
circuit protection
Fixed on p.c.b. by soldering
For AC input protection
Fixed on p.c.b. by soldering
For AC input protection
Fixed on p.c.b. by soldering
For AC input protection
Fixed on p.c.b. by soldering

−93 −

* Two screws, SS6060210SP are necessary for the optional presser foot.

13. GAUGE COMPONENTS AND OPTIONAL COMPONENTS

(1) Cloth cutting knife

A

B

C

12.7 1/2

L

No.

1
2
3
4
5
6
7
8

9
10
11

A : Knife size (inch)

1/4
3/8

7/16

1/2

9/16

5/8

11/16

3/4
7/8

1

1-1/4

B : Knife size (mm)

6.4

9.5

11.1

12.7

14.3

15.9

17.5

19.1

22.2

25.4

31.8

C : Mark

F

K

I

L
V
M
A
N
P
Q
S

D : Part No.

B2702047F00

B2702047K00A

B2702047I00

B2702047L00A

B2702047V00

B2702047M00A

B2702047A00
B2702047N00

B2702047P00
B2702047Q00A
B2702047S00A

Remarks

: Mounted on machine : Accessories (FOR LBH-1790S)

(2) Throat plate

A

B

Stitch width
Type
Standard : S (Part No.)
For knits : K (Part No.)

(40004350) S5 (1.4x6.2)
(40004352) K5 (1.2x6.2)

(40004351) S6 (1.4x7.4)
(40004353) K6 (1.2x7.4)

5 mm (AxB) (mm)

6 mm (AxB) (mm)Remarks Remarks

: Mounted on machine

(3) Presser

™ Stitch width 5 mm

Size (A X B)
Type
Standard : S (Part No.)
For knits : K (Part No.)

Remarks

: Mounted on machine : Accessories (For LBH-1790S)

B1552781000A
D1508771K00A

1 : (4x25) (mm) Remarks

B1552782000

D1508772K00

2 : (5x35) (mm) Remarks

B1552783000

D1508773K00

3 : (5x41) (mm)

™ Stitch width 6 mm

Size (A X B)
Type
Standard : S (Part No.) 14524409

3 : (6x41) (mm)

Sewing area

A

B

(4) Presser foot

Type
Part No. of presser foot
Standard : S
For knits : K

Type 1

D1511771KA0

Type 2

D1511772KA0

Type 3

D1511773KA0

−94 −

(5) Non-lubrication hook

No.

1
2
3
4

Part No.
40006345
40006349
13729603
SS8660612TP

Name of part
RP hook (asm.)
RP bobbin case
Hook sleeve (asm.)
Setscrew

Q’ty

1
1
1
4

Remarks
Complete dry-head machine is
produced by installing non-lubrication
hook. (Max. sewing speed reaches
3,300 rpm.)

(6) Electric bobbin winder

No.

1
2
3
4

Part No.
G50011980A0A
40005405
B32217710A0
SK3452000SC

Name of part
Electric bobbin winder (asm.)
Bobbin winder power cord (asm.)
Bobbin winder thread tension (asm.)
Wood screw

Q’ty

1
1
1
4

Remarks
Device that can wind bobbin thread
independently

(7) 2-pedal for standing work

No.

1
2
3

Part No.
GPK510010B0
GPK570010B0
40003493

Name of part
2-pedal for standing work (asm.)
1-pedal for standing work (asm.)
PK pedal joint cord (asm.)

Q’ty

1
1
1

Remarks

1

2

3

4

−95 −

14. OTHERS

(1) Points of replacement for feed 70 mm and 120 mm

1) Replacement parts for feed 70 mm and 120 mm

No.

1

2

3

4

5

6

7

8

9

!0

!1

!2

!3

!4

!5

!6

!7

!8

!9

Part No.
40006335
40006340
SM6040450TP
40008646
40008658
14523252
14523401
14523708
14524102
SS6060210SP
SD0790203SP
40006341
40006342
SM6050800SP
40004203
SM8050502TP
40004288
40006339
SM6040602TP

Name of part
Presser arm 120
Presser arm spacer
Setscrew
Presser foot 120 (asm.)
Presser foot 120
Presser foot 70 (asm.)
Presser 70
Urethane presser 70
Flat presser 70
Setscrew
Hinge screw
Close cam 120
Lifting plate 120
Setscrew
Feed base (asm.)
Setscrew
Presser arm shaft
Cloth feed plate 120
Setscrew

Q’ty

1
1
3
1
1
1
1
1
1
2
–
1
1
2
–
–
–
1
–

Remarks
Common to 70 mm and 120 mm
Not necessary when using 120 mm presser
Not necessary when using 120 mm presser
For feed 120 mm
For feed 120 mm
For feed 70 mm
For feed 70 mm (for knits)
* Optional for feed 70 mm (for cloth)
* Optional for feed 70 mm (for heavy-weight cushion stuff)
Common to 70 mm and 120 mm
Incorporated in machine head
Common to 70 mm and 120 mm
Common to 70 mm and 120 mm
Common to 70 mm and 120 mm
Incorporated in machine head
Incorporated in machine head
Incorporated in machine head
Common to 70 mm and 120 mm
Incorporated in machine head

1

2

3

4

5

6

7

8

9

!0

!1

!2

!3

!4

!5

!6

!7

!8

!9

!4

3

3

!0

!9