1-NEEDLE, UNISON-FEED LOCKSTITCH MACHINE
WITH
AN
AUTOMATIC
THREAD
TRIMMER
LU-2210N-7
2-NEEOLE, UNISON-FEED LOCKSTITCH MACHINE
WITH
AN
AUTOMATIC
THREAD
TRIMMER
LU-2260N-7
6=tiLHtl
INSTRUCTION
MANUAL
iIjOTE:Read
before using your
Retain
safety
this
Instruction
instructions
LU-221ON-7
Manual
carefully
for
and
and LU-2260N-7.
future
understand
reference.
them
No.01
29199908
IMPORTANT
SAFETY
INSTRUCTIONS
Congratulationsonyour
To
get
the
most
outofthe
correctly.
Please
Please
read
this
Instruction Manual carefully
remembertokeep
1.
Observe
2. Read all
keep
3.
Use
4. All
specified
5.
This
6.
For
7. For
7-1
7-2 For replacing part(s) of needle,
7-3
7-4
7-5 When
8. If
swallow
9. Tampering with
10. Repair, remodeling and adjustment works mustonly be
personnel.
11. General
12. Repair
the
Whenever
13. Before making repair
the air compressor
residual air pressure after disconnecting the air compressor from the machine
are only adjustments and performance
personnel.
14. Periodically clean the machine throughout the period of use.
this
the
safety
machine
your
the
For
guide
For
When
you
audit
the
basic
the
Instructions, Including,
Instruction
machine
devices
safety
shallbeoperatedbyappropriately-trained
personal
following,
threading
etc.
repair
work.
leaving
using
should
allow oil,
anyofsuch
Only
maintenance
and
maintenanceworks of electrical
and
guidanceofspecially
you
purchase
many
this
safety
Manualsothat
afterIthas
must
be in position when
devicesisnot
protection,werecommend
turn
off
needle(s),
the
working
clutch
motors
grease,
liquid by mistake. Immediately
the
live
spare
parts
and
find a feilure of
and
has
of a JUKI
functionsofthis
manual
measures,
the
parts
Inspection
maintenance works on
to be detached from the machine
In a
Including,
but
you
been
ascertained
allowed.
power
switchordisconnect
looper,
spreader
presser
placeorwhen
without applying brake. It
etc.
used
and
devices,
designated
works
skilled
any
of electrical
machine.
before
safe
place.
not
limited to
may
foot,
with
regardless
by JUKI
components
personnel.
checks
machine
use.
but
readItat
thatItconforms
the
machine Is ready for work or in operation. The operation without
that
etc.
throat
the
working
the
havetobe
components,
and
operate
We
hope
you
will
not
limited to
this
Instruction Manual
anytime
operators.
you
wear
and
replacing
plate, looper,
placeIsunattended.
hastobe
machine
wash
of whether
done
canbeused
donebyappropriately
shallbeconducted
the
machine equipped with pneumatic
done
by appropriately trained technicians or specially skilled
the
following
when
with
safety
safety
glasses.
the
power
bobbin.
waited until
and
devicestocomeincontact
the
contacted
the
by appropriately trained technicians or speciallyskilled
for
repairs.
immediately
and
the
compressed air supply
it in
safety,
enjoy
necessary.
plugofthe
spreader,
areas
machine Is powered. Is prohibited.
stop
it Is
necessarytouse
the
useofyour
ones,
whenever
before
you
rules/standards
machine
feed dog,
the
motor
and
consult
trained
by qualified electric technicians or
the
machine.
has
to be expelled. Exceptions to this
machine
you
use
the
machine. In addition,
validInyour
from
the
needle
stopped
with
a medical doctor.
personnel.
parts
suchasan air cylinder,
has
to be cut off. Existing
use
receptacle.
guard, folder, cloth
totally.
your
this
machine
for a long time.
the
machine.
country.
the
eyesorskin
under
or
15. Grounding the machine Is always necessaryforthe normal operation of the machine. The machine
inanenvironment
16. Anappropriate power plug
toagrounded
17. The machine Is only allowed to be
18. Remodel or modify the machine In accordance with the safety rules/standards while taking all the effective safety
measures. JUKI
19. Warning hints
A
A
thatisfree
has
receptacle.
assumes
are
marked with
Danger
Items
no responsibility for damage
of
Injury
requiring
from
strong
to be attached to the machine by electric technicians. Power plug
used
the
two
to
special
noise
sources
for
the
purpose
shown
operator
symbols.
or
service
attention
suchashigh-frequency
Intended. Other
caused
by remodeling or modification of the machine.
used
staff
weider.
are
not allowed.
has
to be operated
has
to be connected
FOR
SAFE
OPERATION
A
A
1. Keepyour hands away from the needle when you turn the power switch
is
operating.
2. Do not
put
your fingers into
the
thread take-up cover while
the
machine is operating.
ON
or whilethe machine
3. Turn OFF the power switch before tilting the machine head or removing the belt cover and the V
belt.
4. Never bring your fingers, hair or clothing close to, or place anything on
motor
during
operation.
the
handwheel, V-beltor
5. Ifyour machine is provided with a belt cover, finger guard, do not operate your machinewithany
of
them
removed.
6. When tilting
machine
1. Toachieve, security, be
the
sewing
2. Before inserting/removing
3. Intime of thunder
soasto
the
head.
machine.
ensure
machine head,
sure
thatthe power supplyearthwire
the
and
lightning,
safety.
exercise
care
power piug,
stop
yourwork
not to ailow your fingers etc. tobecaught
has
beenconnected beforeoperating
the
power
and
switch
disconnect
has
to be turned OFF in advance.
the
power plug from
under
the
receptacle
the
4. When you move the unit from a cold place directly to a warm place, dew condensation may result.
Turn ON
the
powertothe
unit after
you
have
confirmed there is no fear of dew
condensation.
— II —
•
BEFORE
•
SPECIFICATIONS
1.
INSTALLATION
2.
INSTALLING
3.
INSTALLING
4.
ATTACHING
5.
INSTALLING
6.
INSTALLING
7.
CONNECTING
8.
INSTALLING
9.
LUBRICATION
10.
PEDAL
11.
ADJUSTING
12.
PEDAL
13.
ATTACHING
14.
ATTACHING/REMOVING
15.
THREADING
16.
INSTALLING
17.
WINDINGABOBBIN
18.
ADJUSTING
19.
THREADING
20.
ADJUSTING
21.
THREAD
22.
THREAD
23.
HAND
24.
ADJUSTING
25.
NEEDLE-TO-HOOK
26.
ADJUSTING
27.
ADJUSTING
28.
POSITION
29.
ADJUSTING
30.
SEWING
31.
RESETTING
32.
OPERATION
33.
KNEE
34.
TROUBLESINSEWING
OPERATION
OPERATION
PRESSURE
TENSION
TAKE-UP
LIFTER
SPEED
SWITCH
THE
THE
THE
THE
THE
THE
THE
THE
THE
THE
THE
THE
THE
THE
THE
THE
THE
OF
THE
THE
THE
SWITCHES
WASTE
SYNCHRONIZER
BELT
CONTROL
KNEE
AIR
PEDAL
COVER
SWITCH
CORDS
DRIVE
AND
OIL
PANEL
UNIT
STROKE
NEEDLE
THE
HOOK
BOBBIN
AMOUNT
MACHINE
STITCH
WINDER
OF
HEAD
LENGTH
SPRING
PRESSURE
RELATION
HOOK
NEEDLE
BOBBIN
CASE
COUNTER
LIFTING
AMOUNTOFTHE
TABLE
SAFETY
CLUTCH
AND
CORRECTIVE
CONTAINER
BOBBIN
THREAD
OILINTHE
OF
THE
PRESSER
GUARD
OPENING
KNIFE
AND
CONTENTS
GUIDE
HOOK
FOOT
LEVER
ADJUSTMENT
PRESSER
MEASURES
OF
FOOT
THE
AND
KNIFE
THE
^ 1
PRESSURE
WALKING
FOOT
1
1
2
2
2
3
4
4
6
7
8
9
9
9
9
10
10
10
11
11
12
12
12
12
13
13
13
14
14
14
15
15
15
16
17
BEFORE
OPERATION
A
Before
you
gathering
Confirm
supply.
Never
The
allow
Never
Fora test run, removethe
Forthe
Operate
SPECIFICATIONS
Model
Applications
Sewing
Stitch length (max.)
Needle
Liftofpresser
Lubricating oil
Noise
—
that
usethe
directionofnormal
the
operate
first
speed
CAUTION
Check
put
during
voltage
machine
machine
the
month,
the
handwheel
foot
the
following
the
machine
transportation and
has
been
inthe
rotation
to rotate in
machine
runthe machine at a speed of 2.800 s.p.m. or less.
unless
bobbin
after
Normal
so as to
into
operation
oilitwell.
correctly
state,
where
ofthe
machineiscounterclockwiseasobserved
the
reverse
the
case and the needle thread.
the
machine
feed
set.
the
direction.
head
has
Max.
: 9 mm
prevent
for
the
Confirm
voltage
basehas
totally
LU-2210N-7
3,500
Reverse
Workplace-related
Noise measurement according to
maloperatlon
first
time
that
the
typeis
been
filled
stopped.
s.p.m.
Hand
See
feed
SCHMETZ134 X35R (Nm 110 to Nm160)
lifter
noiseatsewing
(1)
Nail
Hinge
seat
--
Spacer
rubber
l|
^
ofand
after
the
power
different
with
Car
seats,
"30.
: 9 mm
lever:
JUKI
New
damage
set-up,
plug
has
been
from
thedesignated one.
oil.
furniture,
SEWING
Normal
9 mm
Knee
Defrix
speed
DIN
45635-48-A-1.
tothe
machine.
cleanitthoroughly.
properly
from
the
etc.
SPEED
lifter:16mm
Oil No. 1
n=2230
connectedtothe
pulley
LU-2260N-7
TABLE"
feed
: 6
mm
min"":
side.
onpage15.
Lpa
Remove
Take
Reverse
84dB(A)
Attaching the hinge seats and support
chine
head
Fix
the
hinge
machine on
seats and the support
the
table using nails.
rubbers
all
power
care
not
feed:6mm
rubt>er
supplied
dust
to
ofthe ma
with
the
v\
1
1
Rubber
cushion
Operatorsside
Support
of
the
machine
rubber^—
head
—^
20
mm
Oil
pan
Table
W ,
50
mm
(2)Attaching
Fix
the
oil
wooden
the
oil
pan supplied
screws.
pan
with
the
machinebytightening
eight
-1
-
2. INSTALLING
Oil
pan
3.
INSTALLING
WARNING:
Turn
OFF
THE
WASTE
O
THE
SYNCHRONIZER
the
power
before
OIL
CONTAINER
starting
the
e
work
soasto
1)
Attach
Attach
with nut
2)
After
plug
prevent
drain
packing
O.
they
are
O.
accidents
plugO,oil
0 and
fixed,
seal @ and
washer
screwinwaste
causedbyabrupt
washer
O to
screw
oil
containerOinto
startofthe
O tothe
O and
sewing
oil
pan.
fix
them
drain
machine.
1)
Attach
2)
Attach
portion
4.
ATTACHING
A
synchronizer
support
synchronizer0in
O ofthe
WARNING:
Turn
OFF
handwheel.
THE
the
power
place
BELT
before
rodOto
with
COVER
starting
the
arm
screws
the
using
attaching
0 so
that
work
soasto
Notch (upper)
Notch (lower)
nut
marker
prevent
1)
2)
3)
O
0.
line0engravedonthe
accidents
Fix
belt
Fit
belt
0 of the belt cover (rear).
Fix
belt
causedbyabrupt
cover
(rear)Oon
cover
(front)
cover
(front)0with
0 to
0
synchronizer
startofthe
the
arm
with
notch
(upper)
screwsOand
aligns
sewing
screws
O and
with
machine.
0.
notch
0.
projecting
(lower)
-2-
5.
INSTALLING
For
the
CP-130,
THE
-230,
CONTROL
-330
PANEL
1)
Attach
panel
thread
©, springwasher © and
unit.
2)
Attach
control
panel © to panel
©
using
screws©with
supplied withthe unit.
guide
O to
control
plain
washer O supplied
installation
washers and
panel©using
auxiliary
toothed
washers
screw
with
the
bracket
©
•
For
the
CP-30
b
3)
V?
J
4)
Remove
cylinder
Attach
cylinder
(At
screws © and
mounting
panel
mounting
this
time,
plain
washers ©
base ©.
installation
plain
auxiliary
base ©
washers © are notattached.)
with
bracket
screws ©.
from
reversefeed
© to reverse feed
-3
-
6. INSTALLING THE KNEE SWITCH (Only
7.
CONNECTING
THE
CORDS
for
the
sewing
1)
2) Fixcord O to an appropriate position on the table using a
machine
Attach
supportingbase O ofknee switch O onto the under
side of the table using wooden screws
staple supplied with the machine soasto prevent
hindering
equfppe^d with DL16B
the
operation.
control
0.
the
unit)
cord from
A
WARNING:
Turn OFF
the
powerbeforestarting
ti
m
oflUiczn
the
worksoas
to prevent
accidents
causedbyabrupt
< ; Inside a dotted circle
CP-30
CP-130'230.330
startofthe
sewing machine.
1) .Pass cords O ofthe thread
cord0 ofthe alternating
(Pass cord 0
throughhole 0 inthe table.)
0
coming
vertical
from
trimming
movement
the
control
0
CP-130'230'33G
CP-30
solenoid, etc., synchronizer cord0,control
dial
through
panelCP-130,-230or-330over panel
hole 0 inthe table to routethem underthe table.
installation
2)
Pass
cords
0,
cated between belttension bolt 0 and motor0,takingcare
nottoallow
-4-
the
panelcord0,operation
auxiliary
0,
0,
0 and 0 through section ® lo
cordstocomeincontact
bracket 0
switch
first.
with
cord O and
Then, pass it
the
belt.
M
3) Push two
open
points
the
front cover.
® locatedat bothsides ofthe
front
coverto
(Caution) To open the front cover, remove first the waste oil
4)
container
contact.
oil
containertothe
(Refer to "2.
CONTAINER"onpage
Connect
SC-11.
the
from
undersideofthe
After
the
coverisciosed,
previous
INSTALLATION
2.)
plugofsynchronizer
oii
pantoavoid
return
position.
OF THE WASTE OIL
cord
© to
connector
the
waste
O of
CP-30
w & 9
CP-130«230.330
::i C
Connect
5)
located
Connect 14P plug O coming from the machine head to
6)
connector®located
Connect
7)
located
10P
plug©coming
under
the
plug
© ofthe
underthe
identification
under
the
control
identification
from
the
motortoconnector
mark
"HO".
identification
mark"^|)".
paneltoconnector ©
mark
"EB"
orconnector ©
®
(CP-30)
(CP-130, -230, -330) located under the identification mark
Connect4P
8)
the machine head to connector
the
identification
plug
®, 2P
mark"
plug
j^".
© and 6P
©,
plug©coming
© and © located under
from
9) Connect 6P plug © coming from the machine head to
connector
10)
Connect
located
11)
Connect2Pplug©coming
located
12) Connect4P
© located under
13) Afterthe completion of the connection of the connectors, fixthe
cords
connector
(Caution) 1. Bind
© located
10P
plug©coming
under
the
under
the
plug©coming
with
cable clip band © located at the opening of the
panel.
attaching
givenonthe
2. When removing
under
identification
identification
the
identification
the
cable
procedure
the
identification
from
theair
mark"
from
theair
mark
from
the knee
mark"
clip
bandInaccordance
shownInthe
left.
the
cable
mark"
unittoconnector
unittoconnector
switch
toconnector
Illustration
clip
band,
pressInthe
with
the
band then draw Itout while pressing hook © In
the
direction
with
tration
the
of
the
removing
givenonthe
arrow
procedure
left.
In
accordance
shownInthe
Illus
©
®
Howtofix
clip
band
Attaching
the
cable
the
cable
procedure
clip
band
Removing
cable
of•
procedureofthe
clip
band
-5-
8.
INSTALLING
'
Nameofdevice
Automatic
device
Auto-lifter
Instantaneous
oftlie
alternating
movement
footand presserfoot
(1)
reverse
conversion
amountofttie
vertical
ofthe
Installing
feed
walking
the
air
THE
Name
model
-OB
AK115
DL16A
DL16B
control
AIR
DRIVE
of
Operatedbymeansofthe
Operated by means of the switch
mountedonthe
Operated by means of the switch
mountedonthe
the
knee
unit
switch
UNIT
Remarks
machine
machine
foot
head
head
pedal
unit
unit
A
and
WARNING:
Turn
OFF
the powerbeforestartingthe workso as to prevent
accidents caused by abrupt start of the sewing machine.
Afterthe set-up of the sewing machine, attach air control unit O
on
the
underside
with
wooden screws 0 supplied withthe air control unit. (The
ure
illustrates
of
the
rear
the
air control unit for
sectionofthe
the
-0B/AK115/DL16A, B.)
table
nexttothe
motor
fig
(2)
Connecting
•
Forthe-OB/AK115
the
air
hose
A
Connect
machineasillustrated in
scribed below in accordance with
while matching
indicated on the label adhered on
through hole 0 inthe table.
arrange it
cessory.
WARNING:
TumOFFthe powerbeforestartingthe workso as to prevent
accidents caused byabrupt start ofthe sewing machine.
the
air
hose
coming from
the
figure above.
the
number
with
cable clip 0 supplied withthe machine as an ac
•
For
the
-OB/AK115/DL16A,
indicated on
After
the
air control unit to
Connect
the
type of sewing machine used,
the
hose
the
joint. Be
suretopass
the
themasde
with
the
the hose has been connected,
B
sewing
number
the hole
®... Forthe
chineisnot
• Connecthose O of
valvein the
0B/AK115
equipped
control
typeofsewing machine
with
airhoses
quick-coupling
unitto
cylinder0.Connectorhoses 0
0.)
joint
0 ofthe solenoid
(This
and 0 of quick-coupling joints 0 and 0 to auto-lifter
cylinder
Atthis time,
0 and screw
0.
fix
hose O on the machine arm withcord clamp
0.
typeofma
• Connecthose O of
0B/AK115/DL16A,
valve in the
and 0 of quick-coupling Joints 0 and 0 to auto-lifter
cylinder0.Connecthose O
conversion of
ofthe
Atthis time,
0 and screw
-6-
walking
control
the
foot
fix
hose O on the machine arm withcord clamp
0.
Btypeof
quick-coupling
unittocylinder0.Connect hoses 0
amount of
andpresser
(D...
For
sewing
machine
joint
0 ofthe solenoid
coming
the
from
the
alternating vertical movement
cylinder
foottoquick-coupling
forthe
joint
0.
(3)Adjusting
9.
LUBRICATION
the
air
pressure
and
attaching
the
cover
I
d)
Adjusting the air pressure
Connectair hose O to regulatorO.Adjust
0.4 to 0.5 MPa (4 to 5
knob
O of
regulator0.Pull
kgf/cm^)
using air pressure regulating
knob
O upand
the airpressure to
turn
erly adjust the operating air pressure. Afterthe adjustment,
press the knob down intothe home position.
(D Attachingthe cover
Afterthe air pressure has been properlyadjusted, attach cover
O of the solenoid valve attaching plate in place.
itto
prop
LU-22XXN-
011
window
A
1)
2) Add the
3) Afterthe lubrication, operate the sewing machine and check
(Caution) 1. Do
WARNING:
Turn
OFF
tltepower
accidentscaused byabruptstart ofthe sewing
Pour
the
JUKI
New
from
lubrication
reached.
same
lubricating oilassoon as the oillevelhas come
down to L level
that the oil rises up to the oilsight window.
O.
not
before
startingthe
Defrix Oil No. 1 into
hole O
use
untilHlevel
any
lubrication oil ottier tlian
the
O of
woric
so as to prevent
oil
tankinthe
oil
gauge 0 is
machine.
bed
the
specifiedtype.Besure to close cap 0 ofthe oil
e
•k Inthe
with normal
the L level in approximately 100 hours for LU-2210N-7 or ap
proximately 50 hours for LU-2260N-7.
hole.
2. When
WARNING:
Tousethe
time,
case
you
operate
time
after
the
of
disuse,
sections
runInthe
where the machine is operated with the hook filled
amount
machine
machine
apply
indicated
thathasbeen
of oil,
your
machine
set-up
or afteranextended
twoorthree
with
arrows.
disused
foran
for
approximately10minutes
the
oil level
descends
drops
ortended
from H level to
for
the
of oil to
period
atl
,800
first
period
the
of
s.p.m.
Supply
oil
Supply oil
-7-
Supply
Supply oil
Oil
10.
PEDAL
OPERATION
0 I
ui}
LU-22XXH-7
• Cleaning
1) Approximately
move
and
element
2) if
lation failure will result. This will give
rise to oil
tion of
the
filter
onceamonth,
screws
O from
the
clean magnet O
O inside
the
filter is clogged with soil, circu
leakage
the
hook driving
the
from
filter.
the
shaft
filter
and
upper
re
case
filter
por
saddle.
The pedal is
1.
Lightly
operated
depress the
2. Furtherdepressthe
3.
Return
the
pedal
tothe stateinwhich
with its
4.
Lightly
5.
Further
stop
o
You
o
You
machine
oIfyou
handwheelbyhand.
needle
down or up.)
depress the back partofthe pedal,and the presser foot
depress
with its
the
needle
candepressthe backpartofthe
can
bring
the
will
stop after the completionofthe thread
wanttoraise
High
Low
Stop
Presser
Thread
in 5
stages.
front
partofthe pedal, and the sewingmachine
front
partofthe pedal, and the machine
you
lightly
place
back
part
ofthe
pedal,
up.
pedal
the
back
needle
tothe
after
pedal
neutral
the
machine
andthe
directly
position
has
presser
from
immediately
trimming
stopped
speed
speed
foot
trimmer
your
foot
the
lifter
will
will
runat highspeed.
foot
onthe
will
go up.
will
come
high-speed
after
you
action.
with
its
needle
runat
low
speed.
pedal,
andthe
down,
the
sewing
thread
trimmer
positionorlow-speed
have
confirmed
down,
make
the
the
©
©
machine
position
start
thread
High
Low
speed
Stop (neutral)
Presser
Thread
stops.
(The
will
actuate
andthe
toactuatethethread
ofa
thread
trimming
trimmer
actuate
speed
foot
lifter
trimmer
machine
stops
machine
trimmer.
action.
onceorturn
will
The
the
-8-
11.
ADJUSTING
THE
PEDAL
12.
PEDAL
13.
ATTACHING
e
PRESSURE
THE
AND
NEEDLE
m
STROKE
A
(1)Attach
1)
(2)
1) Slant ofthe pedal is adjustable bychanging the effective length of
2)
A
(1)Adjusting
(2) Adjusting
(3)
WARNING:
Turn
OFF
the powerbeforestartingtheworkso as to prevent
accidentscaused byabrupt start of the sewingmachine.
the
pedal
connecting
Move
pedal
adjusting
tor
control
lever
0 and pedal
Adjusting
the pedal connecting rod.
Loosen
pedalby
the
slantofthe
adjusting
moving
screw O, and adjustthe
connecting
WARNING:
TurnOFFthepowerbeforestarting theworkso as to prevent
accidents caused by abrupt startof the sewing machine.
the
forward pedaling (toe down)
The forward pedaling pressure can be adjusted by hooking adjust
ing
spring
0 onthe
the leftside, the pedal resistance reduces. When itis hooked on the
right
side
the pedal resistance
the
This
canbe
screw is tightened, the pedal resistance increases. When itis loos
ened,
Adjusting
When
the
strokeisreduced.
achievedbyadjusting
the pedal resistance reduces.
the
connecting rod 0 is insertedintothe holeon the leftside,
rightorleft
backward pedaling (heel down)
forward
rod
plate O tothe
connecting
pedal
rod O upor
side.
increases.
screw0.When
pedaling
stroke
left
When
orthe
right
rod 0
straight.
inclination
down.
pressure
the
springishooked
pressure
to makemo
ofthe
the
adjusting
foot
on
(1)
A
For
WARNING:
TurnOFF
the
LU-2210N-7
Li ^
the
power
beforestarting
the
worksoastoprevent
"7
r
/
Long
groove
UseaSCHMETZ134x35R
1) Turn the handwheel to bringthe needle bar to the highest posi
tionofits
2)
Loosen
long groove in the needle is facing exactly to the left.
3) Pushthe needle 0 deep
go no further.
4)
Tighten
14.
ATTACHING/REMOVING
stroke.
needledampscrew0,and
needle
clamp
into
screw 0
needle.
hold
needle
the needleclamphole
firmly.
THE
BOBBIN
0 sothatthe
untilitwill
accidents
(2)
For
UseaSCHMETZ
1) Turn the handwheel to bring the needle bar to the highest posi
tionofits
2)
Loosen
the long groove on the respective needles faces inward.
3) Pushthe needle 0 deep
go no further.
4)
Tighten
causedbyabrupt
the
LU-2260N-7
134x35R
stroke.
needleclampscrews 0 and
needle
clamp
screw 0
startofthe
needle.
into
theneedle
firmly.
sewing
Long
groove
hold
needle 0 so that
clamp
hole
niachine.
untilitwill
WARNING:
Turn
OFF
the powerbeforestartingthe workso as to prevent
A
1)
2) Put
-9-
accidents caused by abrupt start of the sewing machine.
Lift
latch 0 of
the
the
latch.
hook,
and take out the
bobbin into the shaft in
bobbin.
the
hook correctly
and
release
15.
THREADING
THE
HOOK
16.
INSTALLING
THE
BOBBIN WINDER
THREAD
A
WARNING:
Turn
OFF
the powerbeforestartingtheworkso as to prevent
accidentscaused byabruptstart ofthe sewing
machine.
1) Pass the thread through thread path O in the hookand
thread
hoie
e In
the
lever,
and
draw
the
thread
willbebrought
spring.
☆
Make
sure
that
the
when you draw the thread.
to the thread
bobbin
hole
revolvesinthe
thread.
O viathe tension
directionofthe
Now,
GUIDE
Attach
bobbin
winder
1)
the machine arm using screws
Adjust
the
2)
INGABOBBIN."
position
ofthe thread guide
threadguide O tothe
O.
bobbin
winder
referringto"17.
the
arrow
on
WIND
17.
WINDINGABOBBIN
Pass
1)
2)
3)
4)
the thread inthe order,
0.
Then
wind it
several
(It
is notnecessary to thread 0 and © inthe case
CP-30
modelofcontrol
Tilt
bobbin
presser O.
Adjust
bobbin
thread
amount
bobbin
about 80%of itscapacity.Turnthe screw counterclock
wisetoincrease
bobbin, or clockwise to
Ifthe bobbin is wound unevenly, correct Itby movingthread
the
amountofthreadtobe
guide 0 of the bobbinwinder back or
screws
When the bobbin is
5)
releases
O.
the
bobbin
filled
and
©, ®,
turns
round
panel © is used
adjustment
decrease
up, the bobbin presser automatically
the
bobbin
it.
0,
the
bobbin.
winder
0, 0,
with
screw
wound
forth.
stops
the
0 to
Then tighten
running.
0,
© and
where
machine.)
wind
round
a
the
-
10-
18.
ADJUSTING
THE
AMOUNT
OF
OILINTHE
HOOK
—
WARNING:
The
oil
amountischecked
Extra
special
while
the
hookisrotating
caremustbetakenonthe
adjustment
ata
ofthe
high
oil
speed.
amount
19.
THREADING
A
(1)
For
the
THE
MACHINE
WARNING:
Turn OFF
LU-2210N-7
the
power
beforestarting
HEAD
the
worksoastoprevent
1) Adjust
the
amount of oil in
the
justment screw O mounted on the hook.
2)
Turning
amountofoil in
A
piece
paper
(2)
For
the
of
accidents
the
LU-2260N-7
adjustment
the
3) Place a piece of
the
mately fiveseconds. The proper amount of oil
in
lightly
the
screw
hookorcounterclockwise
hook,
and
the
hookisobtained
make stripes on the paperasshown in
figure left.
causedbyabrupt
hook by turning oil
clockwise
paper
run
startofthe
will
will
near
the
the
machine for approxi
when
sewing
amount
decrease
increase
periphery of
the
oil
machine.
ad
the
it.
spots
Threadthe machinehead
as
showninthe
illustration
following
given
above.
s
J\e
the orderof O throughto ®
Thread the machine head
showninthe
For
the
thread the machine head
For
the
thread the machinehead
iliustration given
needle
thread
needle
thread
locating on
locating on
following
above.
following
following
II
the order O through ® as
the
left
the order of O throughto
the
right
the order of O through to ®.
toward
toward
3
the
the
operator,
operator,
-11
-
20.
ADJUSTING
21.
THREAD
For
THE
TENSION
the
LU-2210N-7
0
STITCH
O
LU-22XXN-7
LENGTH
For
the
LU-2260N-7
Turn stitch dial O counterclockwise (clockwise) so that the num
ber corresponding to the desired stitch length is brought to the top
of the dial until
(1)
Reverse
1) Press
2) Reverse feed stitches
the
3) Release the lever,
direction.
lever
the
feed
down
down.
marking
stitching
spot
reversefeed
are
and
the machine
is reached.
control
lever
©.
madeaslongasyou keep pressing
will
run inthe normal feed
Lengthen
Increase
Increase
®
Decrease
(1)Adjusting
Shorten
o
Increase
the
length of thread remaining after thread trimming
Turn thread tension nut No. 1 O clockwise to shorten the length of thread remaining after thread trimming. Turn the nut counter
clockwise to lengthen it.
(2)Adjusting
Turn thread tension nut No. 2 Q clockwise to increasethe needle thread tension, or counterclockwise to
(3)Adjusting
Turn
22.
THREAD
tension
the
needle
the
bobbin
adjustment
TAKE-UP
thread
tension
thread
tension
screw0clockwisetoincrease
SPRING
the
bobbin
thread
(1)When you want to
1)
Loosen
right or left to
O
tension,orcounterclockwise
change
screwOin
change
the
strokeofthe
the
stopper,
and
stroke of thread take-up spring
decrease
todecrease
move
stopper
it.
it.
spring:
0 tothe
2) Movethe stopper to the right to increase the stroke of the
thread take-up spring, or the leftto decrease it.
(2)When you want to change the tension of
1)
Loosen
nut
O. and
move
spring
stud 0
the
spring:
counterclockwise
increase the tension of the spring, or clockwiseto decrease it.
to
ncrease
23.
HAND
LIFTER
1) When youwantto keep the presser
turn
hand
lifter O in
the
the presser footrise 9 mmand stay at that position.
2) To make the presser foot come downto its home position,
lower
the
hand
lifter.
-12-
direction of
foot
inthe
the
arrow. This
lifted
position,
makes
24. ADJUSTING THE PRESSURE OF THE PRESSER FOOT
A
Increase
1)
Turn
the pressure ofthe presser
crease
(Be
thepresser
holds
25.
NEEDLE-TO-HOOK
WARNING:
Turn
OFF
the
e
t
o
RELATION
power
before
starting
the
work
soasto
prevent
WARNING:
Turn
OFF
the
power
before
starting
accidents
presser
it.
sureto
the
accidents
causedby
spring
regulating
operate
foot
material.)
the
minimizedaslong
causedbyabrupt
abrupt
foot,orcounterclockwise
sewing
the
work
soasto
prevent
startofthe
dialOclockwisetoincrease
machine
asthepresser
startofthe
sewing
with
the
sewing
machine.
to de
pressure
foot
securely
nwchine.
of
Set
the
Loosen
by2.0 mm
In
the
clamping
needle
Loosen
4)
0.1mmis
the
specified
sj!
Set
5)
the
(Caution)
26.
ADJUSTING
A
0.15~0.2
VAt
stitch dial to 0 [zero].
hook
from
state
describedin2),
V
0.02~0.1
driving
shaft
the lowestposition of its stroke.
screw©.At
eyelet.
(As
reference,
screwOin
provided
feed
adjusting
Tlie
operation
relevant
control
WARNING:
Turn
OFF
the
between
clearanceIsobtained,
dialtomaximum
parts
from
panel.
THE
the
power
mm
mm
n
set
collar
clamping
align
blade
this
time,aclearanceof1.4mmis
the
handwheel
top
faceofthe
the
blade
securely
panel
could
comeincontact
contact,
HOOK
before
shift
NEEDLE
starting
screwO,and
pointOof
pointer
bed
and
pointofhook
tighten
value,
and
the
thread
GUARD
the
work
the
hook
meets
screw©in
and
the
screwsOand
check
that
witfi
stand
soasto
turn
the
handwheel
with
the
centerofneedleO,and
provided
the
the
marker
hook
between
lineofthe
driving
needlebymoving
counterclockwisetomake
the
blade
scaleLon
shaft
saddle,
the
hook
©.
the
blade
pointofthe
the
thread
toa
prevent
When
the
Asthe standard
guard©must
by0.15to0.2mmaway
hook needle guard by bending it.
1)Ifyou
2)Ifyou
stand
positionatwhich
accidents
a hookhas been replaced, be sure tocheckthe
hook
needle
wanttomove
justing
wantto
justing
hook
when
the
causedbyabrupt
guard.
position
push
theside
screw ©
move
screw © counterclockwise.
the
needle
bar
tighten
pointofthe
the
and
adjustsothataclearanceof0.02
driving
shaft
does
not
tilting
the
thread
ofthe hookneedle guard, hookneedle
faceofneedle
from
itsstraight
the
hook
clockwise.
the
hook
hook
driving
shaft
set
hook
and
the
top
endofthe
handwheel.)
saddletothe
comeincontact
machine
stand
does
startofthe
position.Ifnot,adjustthe
needle
needleguardoutwards, turnad
rightorleft.
with
the
head.Toprotect
not
Interfere
sewing
O to
guard
machine.
position
lean
the
inwards,
ascend
collar
Once
needle.
the
with
the
needle
turn
to
of
ad
-13-
27.
ADJUSTING
WARNING:
Turn
A
28.
POSITIONOFTHE
OFF
0
WARNING:
Turn
OFF
THE
the
the
BOBBIN
power
before
COUNTER
power
before
CASE
startingthe
OPENING
KNIFE
starting
the
LEVER
work
so as toprevent accidentscausedbyabruptstartofthe
1)
Turn
the
handwheeltomove
the directionofthe arrowO,and loosen screw
2)
Turn
the
handwheeltomove
the direction of arrow ©, and loosenscrew ©.
3)
Turn
bobbin
AND
work
bin
case
stopper0restsingroove0on
this state, adjust so that a clearance of 0.1 to 0.3 mmis pro
vided
betweentop end 0 of
protrusion
Then,
tighten
ADJUSTMENTOFTHE
soasto
prevent
accidents
case Ointhe
0 onthe
screws 0 and
KNIFE
causedbyabrupt
directionofarrow
bobbin
PRESSURE
bobbin
bobbin
bobbin
case
when
0.
startofthe
sewing
case
opening
case
opening
case openingleverand
they
sewing
O.
0 to
throat
approach
machine.
leverOin
leverOin
until
bob
plateO.In
most.
machine.
Left hook (only for LU-2260N-7)
Right hook
4.8
mm
the
End face of
slideplateofthebed 0
groove in the
/
Gauge
?7
End
faceofthe
throatplace 0
the
End face of
slide
plateofthebed 0
Align
the
1)
Under
2)
drawn.)
Adjustingthe counter knife ^ a x . u
•
Loosen
3)
mm
O.
Adjusting
Loosen
4)
state,
endofthe
handwheel
the
aforementioned
screwOin
away
from
(Use
the
the
screws0of
the
knife
counter
gauge
pointertothe
state,
the
counter
end
knife
face0of
supplied
pressure
the
throat
with
moving
pressureisdeveloped
knife.
groove in the
marker
move
knife
the
knife.
lineofscaleKon
the
moving
base,
and
adjust
plate
and
23.6
machineasreference.)
Turn
the
handwheeltomove
from
the
position
the
handwheel.
knifebyhandtoits
the
positionofthe
mm
away
from
where
the
top
forward
counter
end
face©of
the
moving
endofthe
travel
knife
moving
end
(where
knifesothat
the
slide
plateofthe
and
adjust
knifeisspaced
the
top
the
<o
<o'
thread
trimming
end 0 of
bed.
knife
pressure.Inthe
5.5to6.5
Knife
be
developed.
counter
Then
Counter
pressure
knife
starts
...
solenoidisfully
•«
knifeis4.8
tighten
screws
.
xu
. .j
standard
mm
from
the
, „
>i
top
to
o
29.
ADJUSTING
THE
LIFTING
AMOUNTOFTHE
PRESSER
The
justed
amountorcounterclockwisetodecrease
-14-
lifting
using
FOOT
amount
dial
AND
THE
ofthepresser
O .
Turn
the
WALKING
dial
FOOT
foot
andthe
clockwisetoincrease
walking
it.
foot
the
isad
lifting
30.
SEWING
The
maximum
sewing
SPEED
sewing
speed
appropriatelyInaccordance
TABLE
speedhas
been
specifiedInaccordance
with
the
sewing
with
conditions
sewing
given
conditionsasshownInthe
taking
care
nottoexceed
table
below.
the
corresponding
Setthe
specified
maximum
value.
(1)
Max.
sewing
movement ofthe walkingfoot and the presser foot
Amount of
movement
and presserfoot
Less
than
Less
than
Less
than
4.75
mm
31.
RESETTING
A
speedInaccordance
alternate
ofttie
vertical
walking
2.5
mm
2.5
'-4.0
4.0-4.75
~
WARNING:
Turn
mm
OFF
foot
mm
THE
the
with
the
Stitch length : 6 mm or
less
3500
s.p.m.
3000
s.p.m.
2500
s.p.m.
2000
s.p.m.
SAFETY
power
t)efore
CLUTCH
startingthe
amount
ofthe
alternating
Stitcfi
lengtti:
and 9 mmor less (onlyfor
2210N-7)
2000
2000
2000
2000
work
soas to preventaccidentscaused byabruptstart ofthesewing
More
S.p.m.
s.p.m.
s.p.m.
s.p.m.
vertical
than6 mm
LU-
Thesafety
hook or
Whilethe safety clutch iffunctioning,the hook
Ifturning
the
(2)Max.sewing
needle
Needle
4-10
12-20
22-30
32-36
clutch
functions
other components during sewing.
the
handwheel.
1) Reset the safety clutch
2)
Fit
screwdriver
(medium)Osupplied
accessoryinholeOin
3)
Holding
bushing O
directionofrotation.
screwdriver O by hand to prevent safety clutch
from
rotating,
speedinaccordance
gauge
(only for LU-2260N-7)
gauge
mm
mm
mm
mm
whenan excessive loadIsappliedto the
with
the sewing machine
safety
clutch
turnthe handwheel inthe reverse
4) The resetting procedure completes when the handwheel
clicks.
Speed
3500
3300
3000
2500
will
never rotate even
with
the
bushing
with
s.p.m.
s.p.m.
s.p.m.
s.p.m.
machine.
tilted.
machine
O.
the
as an
32.
OPERATION
For-0B/AK115
0
One-touch
• While the machine Is In operation, the machine performs reverse feed stitchingaslongasthis switch is held pressed,
resumes
• Ifthis switchis pressed whilethe machine is at rest, the feed
run.) IfItIs released,
SWITCHES
type
reverse
normal feed stitching when
feed
the
switch
feed
will
<S)
}/
the
return to
switch Is released.
the
normal feed state.
For-0B/AK115/DL16A,
B
(S)
will
be set to the reverse feed state. (The sewing machine does not
0 Alternating vertical movement amount change-over switch
Ifthis switch Ispressed the amount ofthe alternating vertical movement of the
(Thelamp
fed.
locating
Inside
the button
will
light
up.) Use this switchwhena multilayered
walking
footand the presser foot
portion
ofthe sewingproductIs notsmoothly
will
be maximized.
and
-15-
Automatic
e
• Ifthis switch is pressed when the
place (for
• Ifthis switch is
(once immediately after it is
reverse
feed
stitching
once
immediately after it is pressed). (Example 1)
pressed
when no automatic reverse feed stitching has been specified, the reverse feed stitching
cancellation/addition
following
pressed).
automatic reverse feed stitching has been specified, the reverse stitching
(Example 2)
switch
(2)
will
will
take place
nottake
(Example 1) Inthe
If
the
the
automatic
tweenAandB)will
(Example2) Inthe case where neither automatic reverse feed stitchingforstart northat forend have been specified:
case
where both automatic reverse feed stitching forstart and that for end have been specified:
N?
(2)
switchispressed
reverse
kC
before
starting
feed
stitching for
not be carried out.
sewing,
start
(be
:
• c
Dl\
1 ^
If
the
(2)
switchispressed
tomatic reverse feed stitching for
andD)will
not be carried out.
during
sewing,
end
(between C
the
au
33.
s/
If
the
(2)
switchispressed
the
automatic reverse feed stitching for start (be
tweenAandB)willbecarried out.
KNEE
SWITCH
(only for
O
<
before
starting
the
machine provided with a
sewing,
Df<J
If
the
(2)
switchispressed
tomatic reverse feed stitching for end (between C
andD)will
O
1)
be carried out.
Needle
Ifthis switch is
needle-down stop position to the reverse-rotation needle-up
stop
line "B"on
tical movement of the walkingfoot and the presser foot
lifting
switch
position
DL16B
If
knee
maximized. (Same withthe performance carried out by
ing the alternating vertical movement amount change-over
(pointer 0 on the handwheelindicates marker
the
control unit)
switch
switch"^"on
The knee switch
2)
so setting the
loses
the
function
movement amount
Refertothe
Instruction
during
sewing,
the
au
.^,2,.
pressed,
scaleofthe
O is pressed, the amountofthe alternating ver-
the
can
function
change-over
the machine
handwheel).
machine
also be
sameasthatofthe
head.)
usedasa
ofthe PSC box. (Inthis case, the switch
switch.)
Manual
for
SC-11
will
presser
alternating
for
travel from
lifting
details.
the
will
be
press
switch by
vertical
-16-
34.
TROUBLES
1. Thread
breakage
IN
Troubles
(Thread frays
or Is worn out.)
(Needle
from
ric.)
the
thread
wrong
trails 2 to 3 cm
sideofthe
2. Stitch skipping
3.
Loose
stitches
4. Thread slips offthe
let
simultaneously
trimming.
5.
Thread
slips off
the
let at
the
start
of sewing.
6. Thread is not cut sharply.
7.
Thread
thread
remains
trimming.
(Bobbin thread trimming failure
when stitch length Is
tively short.)
8.
Thread
sewing
breaksatthe
after
thread
SEWING
needle
with
thread
needle
uncut
after
compara
start
trimming.
AND
CORRECTIVE
MEASURES
Causes
® Thread path, needle point, hook blade point or
bobbin
case
resting groove on the throat plate
sharp
edges
or burrs.
(D Needle thread tension Is too high.
(D
Bobbin
case openingleverprovidesan excessive
clearanceatthe
bobbin
case.
® Needle comes In contact with the blade point of
hook.
(D Amount of oil In the hook Is too small.
(D
Needle
thread
tension
is too low.
fab
(Z)
Thread take-up spring works excessively or the
strokeofthe
(§)
Timing
sively
d)
Timing
sively
spring Is too small.
k>etween
the needle and the hook is exces
advancedorretarded.
Isetween
the needleandthe hookisexces
advancedorretarded.
(D Pressure of the presser footis too
(D The clearance provided between the top end of
the
needle
eyelet
and
the
blade
not
correct.
® Hookneedle guard is not functional.
(D
(D
spring of
Improper
Bobbin
typeofneedle Isused.
thread does not pass throughthe tension
the
bobbin
case.
(D Thread path has been poorlyfinished.
(D
Bobbin
fallsto movesmoothly.'
0 Bobbin
case
clearanceatthe
opening lever provides too much
bobbin.
(D Bobbin thread tension is too low.
(D
Bobbin
has tseenwoundtoo
eye
CD
Threadtensiongivenbythe tensioncontroller No.
1 is
too
high.
eye
(D Thread tensiongivenbythe tensioncontroller No.
tightly.
1 is too high.
(D Clampspringhas improper shape.
(D Bobbin
(!) The bladesof
(D
(D Bobbin
0
CD
0 The needle thread Iscaught Inthe hook.
of
thread
tension is too low.
moving
knife
been
improperly
The
knives
thread
Initial
position of the movingknife has been im
properly
adjusted.
have
blunt
tension is too low.
adjusted.
and counter
blades.
Bolsbinthread tension is too low.
has
low.
point of hook is
knife
have
o Remove the
Corrective
sharp
measures
edges
or burrs on the blade
point of hook using a fine emery paper. Buffup the
bobbin
case
resting groove on the throat plate,
o
Decrease
o
Decrease
bobbin
to
ING
o
Referto"25.
o Adjustthe amount ofoilInthe hook properly.
"18.
HOOK."
o
Increase
o
Decrease
the
o
Referto"25.
o
Referto"25.
o Tighten the
o
Referto"25.
o
Referto"26.
GUARD."
case
"27.
ADJUSTING
LEVER."
ADJUSTING
the
stroke of
the
needle
thread
the
clearance
opening lever
THE
NEEDLE-TO-HOOK
THE
needle
thread
the tension of
the
spring,
NEEDLE-TO-HOOK
NEEDLE-TO-HOOK
presser
spring regulator,
NEEDLE-TO-HOOK
ADJUSTING
tension,
provided
and
BOBBIN
between
the
bofc>bln.
CASE
RELATION."
the
Refer
OPEN
See
AMOUNTOFOILINTHE
tension,
the
spring
and
increase
RELATION."
RELATION."
RELATION."
THE
HOOK
NEEDLE
o Replace the needle with one which is thicker than
the
current
o
o
Thread
Remove
needlebyone
the
bobbin
rough
parts
case
with a fine
count.
correctly.
emery
paper
buff it up.
Replace
o
o
Referto"27.
OPENING
o
Increase
o
Decrease
winder.
the
bobbin or hook with a new
LEVER."
the
bobbin
the
ADJUSTING
tension
THE
thread
tension,
applied to the bobbin
BOBBIN
one.
CASE
o Decrease the thread tension given by the tension
controller
o
Decrease
controller
o
Replace
rect
o
Increase
o
Referto"28.
KNIFE
PRESSURE."
o Replace the moving knife
new
o
Increase
No.
1.
the
thread tension given by
No.
1.
the
clamp
the
current
one.
the
bobbin
POSITION
AND
ADJUSTMENT
ones,orcorrect
the
bobbin
spring with a new
thread
tension.
OF
THE
OF
and
the
thread
counter knife with
current
ones,
tension.
the
tension
oneorcor
COUNTER
THE
KNIFE
o Refer to "Adjusting the initialposition of the knife"
in
the
Engineer's Manual,
o
o
Increase
Shorten
needle
THREAD
the
bobbin
the
length of
after
thread
TENSION."
thread
thread
trimming.
tension.
remaining on
Referto"21.
or
the
-
17-
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