Juki LS-341N Instruction Manual
CYLINDER-BED, 1-NEEDLE, UNISON-FEED lOCKSTITCH
MACHINE (WITH
A VERTICAl-AXIS tiOOK)
1
®
I
I
----
NOTE : Read safety instructions carefully and understand them
before using your
Retain this Instruction Manual for future reference.
LS-341
N.
No.02
29176906
---------
IMPORTANT SAFETY INSTRUCTIONS
----
Congratulations on
To
get the most
correctly.
Please read
Please remember
this
1. Observe the basic safety measures, including, but
2.
Read all the instructions, including, but not limited
keep
this
3.
Use the machine after
4.
All safety devices must be in position when the machine is ready
specified
5.
This machine shall be operated
6.
For
your
7.
For the following, turn
7-1
For threading needle(s), looper, spreader etc. and replacing bobbin.
7-2 For replacing part(s)
guide etc.
7-3
For repair work.
When leaving the working place
7-4
7-5 When using
8.
If you should allow oil, grease, etc. used with the machine and devices
swallow any
9.
Tampering with the live parts and devices, regardless
10.
Repair, remodeling and adjustment
personnel. Only
11. General maintenance and inspection
12. Repair and maintenance
the audit and guidance
Whenever you
13. Before making repair and maintenance
the
air
compressor
residual air
are
only
personnel.
14. Periodically clean the machine
your
purchase
out
of
the many
Instruction Manual carefully before use.
to
keep
this
Instruction Manual so that
it
safety devices
personal protection, we recommend that you wear safety glasses.
off
clutch motors
of
such liquid by mistake, immediately wash the contacted areas and consult a medical doctor.
spare parts designated by JUKI can
of
find a failure
has
pressure after disconnecting the air comp1ressor from the machine has
adjustments
and
of
a JUKI machine.
functions
manual in a safe place.
has been ascertained that
is
not allowed.
by
the power switch
of
needle,
without
works
of electrical components shall be conducted by qualified electric technicians
specially skilled personnel.
of
any
to
be detached from the machine and the compressed air
performance
throughout
of
this
machine and operate it in safety, it
We
hope you will enjoy the use
not
limited
to
this
you
may read
appropriately-traine~d
presse1r
or
works
of
foot, throat plate, looper, spreader, feed dog,
when the
applying brake, it has
must
works
electrical components, immediately stop the machine.
works
checks
the period
it
at anytime when necessary.
it
conforms
or
disconnect the power plug
working
of
only
be done by appropriately trained technicians
be
have
to
be done
on the machine equipped with pneumatic parts such as an air cylinder,
done
of
to
Instruction Manual before you use the machine. In addition,
operators.
place
to
whether the machine is powered, is prohibited.
used
for
by
by
appropriately
use.
is
necessary
of
your
the following ones, whenever you use the machine.
with safety rules/standards valid in
for
work
or in operation. The operation without the
of
the machine from
is
unattended.
be
waited until the
to
come
repairs.
appropriately trained personnel.
iru
trained
motor
stopped totally.
contact with
supply
to
be expelled. Exceptions
technicians
machine
th1~
neeoHe
has
to
to
use
this
machine
for
a long time.
your
country.
receptacle.
guard, folder, cloth
~rour
eyes
or
skin
or
specially skilled
or
under
be
cult
off. Existing
to
<Or
specially
skilled
or
this
15. Grounding the machine
in an environment that is free from
16. An appropriate power plug has
to
a grounded receptacle.
17. The machine is
18. Remodel
measures. JUKI assumes
or
only
modify
is
always necessawy
to
allowed
the machine in accordance with the safety rules/standards while taking all the effective safety
to
be
n.o
responsibility
19. Warning hints are marked with the
Danger of injury to operator
A
Items requiring special attention
&
strong
be attached
u·sed
two
noise sources such as high-frequency welder.
for
the purpose intended. Other used are not allowed.
shown symbols.
for
the
no1rmal
to
the machine by electric technicians. Power plug has
for
damag1e
or
service staff
operation
caused by remodeling
of
the machine. The machine has
or
modification
to
to
be
of
the machine.
be operated
connected
-j-
-----FOR
1.
Keep
yourr
hands away from needle when you
machine is in operation.
2.
During operation, be careful
come close
do
not
3
..
Do
not
removed.
4.
Before tilting the mach
attached
5.
Before tilting the machine
confirm
and
6.
Tilt the machine head after removing the
7.
When having tilted the machine head, wipe
lbed
support
8.
"fo ensure safety, never operate the machine with the ground wire
removed.
9.
When inserting/removing the power plug,
advance.
10. In time
t:he
receptacle
·11.
If the machine is suddenly moved from a cold place
may be observed. In
(~onfirmed
12. lrurn OFF the power
13. Do
not
to
the thread take-up, handwheel, V-belt, bobbin winder and motor. Also,
place anything close
operate
of
allow the power cord
yom
to
your
machine head.
that the
and hinge area, and then raise up the machine head.
thunder and
so
as
that there is no danger
SAFE
machine with
nne
head, be sure
or
motor
to
to
of
~ightening,
ensure safety.
this
case,
the machine in
OPERATION---------
not
to
allow
to
them.
the~
removnng the V belt, be sure to
the sewing machine stops.
stop
turn
of
to
trail
tum
ON
your
or
any other person's head
finger guard, belt cover and any other protectors
to
confirm that the head support bar is
hook
for
the knee lifter.
out
oil on the bed underside, the
the
your
ON
water
the
on
the floor.
work
the
drops
event
power
power
switch
and disconnect the power plug from
to
a warm place, dew condensation
to
in the machine.
of
a power failure.
the power
tum
OFF the power switch
has
the
machine
switch
for
to
or
while
or
hands
pro_perly
top
the power
be turned OFF in
after
your
the
to
face
of
supply
have
-n-
[!. SETTING UP THE SEWING MACHINE
Mounting
(Caution)
j2.
LUBRICATION
the
WARNING:
Turn OFF
knee
The knee
is
installed.
the
power
lifter
lifter
should
before
be
mounted
starting
the
before
work
so
as
the
to
motor
prevent
accidents
When using the knee liifting pedal, attach knee
lifter bracket A
8 in place using screws as
illustrated in the figure.
(Caution)
caused
by
Knee
screws
machine
abrupt
start
iifler
~~
in
ol
the
bracket
are
supplied
the
accessory
sewing
8 and
with
machine.
the
box.
*
*
*
-2-
Before
Prior
points marked with the arrows.
Lubricating
Shift the slide plate, and apply two or three drops
every day to the hole shown with the arrow And
four or five drops
with the arrow
Lubricating
Prior
holes shown with the arrows
starting the sewing
to
operation, apply adequate amount
the
hook
of
oil every day to the felt shown
and
machine
hook
4D.
the
feed
bar
to
operation, apply two or three drops
(i,
(g
and@
of
shaft
without fail.
oil
saddle
of
oil to the
to
of
the
oil
j3,
INSTALLING
THE
THREAD
STAND
!4.
~NSTALUNG
THE BELT COVER AND THE BOBBIN WINDER
Assembk
side edge
the thread stand, and install it on the far right-hand
of
the table using three screws
WARNING:
Turn
OFF
accidents caused by abrupt start
1)
Drill guide
in the table.
2) Insert belt cover support
machine arm.
3) Install belt cover support plate
4) Attach belt
5) Fit bobbin winder 8 in belt cover
position
6) Fix bobbin
7) Put the V belt
cover and top
the power before starting the work so as
holeseand@for
of
wooden screws
0 into the tapped hole in the
f)
on the machine head.
cover@! to support
of
the bobbin winder properly.
winder@ on the table.
on
the hand wheel. Attach rid
cover8
in place.
Oand
Q.
to
the sewing machine.
support plate
@!,
prevent
to
be used
f).
and adjust the
Gof
the belt
ATTACHING THE NEEDLE
~
5.
-
__Q_]B;/-8
'-tlr
:....--~
~~·
[s.
ATTACHING/REMOVING THE BOBBIN CASE
.A
• Turn OFF the
1)
2) Loosen needle clamp screw
3)
4) Securely tighten the needle clamp screw
~----------------------------------,
WARNING:
Turn
OFF
accidents caused by abrupt start
Turn the handwheel
highest position.
indented
Insert the needle into the needle bar until it will go no
further.
the power before starting the work so as to prevent
power
part(i.) faces exactly to the right.
to
the motor.
to
move the needle bar up to its
of
the sewing machine.
f).
Hold needle 0 so that its
@.
WARNING:
Turn
OFF
the power before starting the work so as
of
accidents caused by abrupt start
1)
Raise lever 0
together with the bobbin in it.
2) Fit the bobbin case into the hook driving shaft, and tilt the
lever.
of
the hook, and remove the bobbin case
the sewing machine.
to
prevent
-3-
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