Juki LK-1850 Instruction Manual
HIGH-SPEED
BAR
TACKING
1-NEEDLE
INDUSTRIAL
CYLINDER
LK-1850
INSTRUCTION
•JUKI
BED
SEWING
MACHINE
MANUAL
LOCKSTITCH
BE185030B0A
Congratulations on
sewing machine.
To get the most
machine
use the
and
operate
unit
correctly, so please read this Instruc
tion Manual carefully before using it.
you will enjoy using it for a long time. It is also
necessary to keep this Instruction Manual taking
care
nottolose
your
purchase
of
outofmany functionsofthe
it in safe^, it is
necessary
We
it.
a JUKI
hope
to
CAUTIONS
BEFORE
OPERATION
2.
The
runinthe
Never
runinthe
sewing
allow
machine
arrowed
the
reverse
should
direction.
machine
direction.
Rubber
plug'
3.
Remove
felt
to
lubricate
to
"9.
the
placed
the
the
description
Lubrication".
rubber
plug. If
inside has
machine
dried,
referring
given
the
in
4. Before starting a machine which has been newly set up or has
of
the
lubricating oil to mainshaft components through hole Q , one drop to the racing surface O of
and infiltrate sufficient amount of
CAUTIONS
IN
OPERATION
X A
1. Do
not
place
your
while
the
machine
fingers near
is in
operation.
9 a
the
the
lubricating oiltothe machine bed oil felt O .
work
clamp
foot
m
not
been used for a long period of time, apply a few drops
the
Belt
cover
2.
Make
sure
to
turn
off
the
removing
the
belt
cover.
power
shuttle race,
switch
before
3.
Never
bring
your
thingonthe
or
motor
personal
injuries.
handwheel,
during
fingers or
operation.
hair
V-belt,
close
It
to,orplace
bobbin
may
leadtoserious
winder
any
wheel
4. If
your
guard
with
machineisprovided
and
anyofthem
eye
guard,
removed.
never
withabelt
operate
cover,
your
finger
machine
1.
NSTALLING
THE
MOTOR
INSTALLING
THE
THREAD
2.
STAND
I
a
1. Attach motor base e to table O using bolt
vibration-proof rubber pad 0 , washer
0,
washer 0 , and nut 0 .
2. Using bolt 0 , washer
® , install motor 0 to motor base
3.
REMOVING
(£)
, spring washer 0 , and nut
0.
THE
BELT
COVER
To remove
the
then
★
Install the belt cover by reversing the above
procedure.
belt
lift
the
belt cover, loosen screw 0 and tilt
cover
away
from
you
it.
untilitcomes
off
O,
spring
4.
1.
Remove
position on
Assemble
Tighten
If
ceiling
rest
RAISING
the
nut
wiringismade,
rod
9.
the
belt
the
thread
stand,
0 to fix
THE
cover.
machine table, raise
With
and
the
thread
pass
MACHINE
the
machine
set
it in
the
head
holeinthe
cord
setinits
stand.
the
power
the
machine head in direction
© while pushing down (in direction) 0 ) bed locker 0 .
2. Releasing
tion
*
To
lock.
©
lower
the
bed locker, further raise
untilitlocks.
the
machine
head,
pushupthe
the
machine head in direc
bed
lockertorelease
through
HEAD
table.
spool
installing
the
5.
INSTALLING
THE
MACHINE
HEAD
1. Install bed mounting base 0 to machine table 0
using bolts 0 , flat washers 0 and O , and nuts
0
(each
2. Fix
point
Then
-2-
fix
3 pcs.).
0
two
before
points
raising
© .
the
machine
head.
6.
ATTACHING
THE
IDLER
PULLEY
Fix idler pulley Otomounting
(Caution) Adjust
to
pass It
7.
MOTOR
1. M-type V
2. This sewing machine uses two V belts, one for high-speed sewing, and
3.
The
Frequency
Note: The
ir Installing
Set
motor
one of two setscrews e meets the flat part of
motor
belts
table
below
50
Hz
60
Hz
motor
thread.
the
pulley O
shaft. Then tighten setscrews O .
PULLEYS
are
used
for
this
shows
the
relation
Sewing
speed
2300
s.p.m.
2000
1800
2300
2000
1800
pulleys marked with asterisks are applicable
motor
onto
pulley
motor
AND
BELTS
modelofsewing machine.
between
Motor
shaft O so
the
pulley
*13531108
*13531207
13531306
*13531405
*13531504
13531603
motor
part
that
the
pulleys,Vbelts,
No.
onlytocotton
Engraved
-3
50-2300
50-2000
50-1800
60-2300
60-2000
60-1800
thread.
-
the
mark
other
and
Please
sewing
order
plate O by setscrew
the
clearanceatO
through.
for low-speed sewing.
speeds.
High-speed V
MTJVM005000
MTJVM004900
MTJVM004800
MTJVM004900
MTJVM004800
MTJVM004800
the
motor
belt
(50")
(49")
(48")
(49")
(48")
(48")
pulleys
2.
6.
iD
to
just
allow
the
V belt
Low-speedVbelt
MTJVM004600
MTJVM004600
for
threads
Attaching
other
than
the
(46")
(46")
cotton
belts
Set high-speed V belt O
on
the
large
diameters
high-speed pulley ^
the
motor
pulley.
Set low-speed V belt 0 on
the
small
diameters
of
speed pulley 0 and
motor
pulley
through
sure decreasing pulley O
and
idler pulley 0 .
Move
the
motor
pulley
or
forth
to
provide
3mm
high-speed
bobbin
clearance
V belt O and
winder wheel 0 .
Loosen setscrew
move
the
motortothe
or
lefttomake
so
that
the
belt
comes
evenlyincontact
with
the
wheel
winderisused
Winding a
Loosen
move
when
bobbin").
setscrew
motor
bobbin
base 0
a 2
between
0,
adjustment
high-speed
winder
the
bobbin
(referto"15.
0 ,
or down by, adjusting
0
to
so
belt
when
that
perform
the
slacks
you
high-speed
about
push
adjustment
the
belt
middle o
Loosen
setscrew
0 ,
move idler pulley 0 in
the
arrowed
perform
the
low-speedVbelt
about
push
the
(At
this
pulley so
engraved
the
installing
direction
adjustmentsothat
10mm
belt
that
when
at middle 0 .
time,
set
it is aligned
the
marker dot 0 on
plate.)
of
and
low-
the
pres
back
to
and
right
V
and
up
nut
V
10mm
at
and
to
slacks
you
idler
with
8.
ATTACHING
THE
CHAIN
9.
LUBRICATION
Supply
Supply
Hook S-shaped hook 0 into the hole in the tip of
starting lever O , and
shaped
10.
Operate
1.
Turnonthe
hook.
OPERATING
the
sewing
power
attach
machineinthe
switch.
chain O to
THE
SEWING
following
the
procedure:
1. Lubricate the machine once a day from lubrication hole O . The
S-
machine can also be lubricated by removingrubber plug O .
2. Use Juki New Defrix Oil No. 2 or spindle oil No. 2 asthe lubricating
oil.
* When using
Supply silicone oil through silicone oil lubricating hole 0 when using
thread guide
At this time, check
guide 0 has
the
thread
0,
that
the
silicone oilonit.
guide (optionally available)
the
thread which has passed through thread
MACHINE
2. Depress the starting pedal a little, and the work clamp foot will come down. When you want to make the work clamp foot
go
up,
release
the
pedal.
3. Further depress the pedal, and
release
the
pedal.
4. When the machine has completed the specified bar-tacking cycle, the work clamp foot will automatically
needle
and
bobbin
threads
are
the
sewing machine starts bar-tacking. Immediately after the sewing machine starts bar-tacking,
trimmed
before
the
(Cautions) 1. Be sure to
machine
else
the
stops.
release
machine will
the pedalas soon as the machine starts bar-tacking, or
not
stopatthe
predetermined point.
go*
up, and the
2. If you fail to depress the pedal sufficiently, the machine may stop at the
first stitch. Inthis case, depress
3. If
the
machine will not start evenwhen you depress it strong enough, turn
the
pedal gain sufficiently.
of the power switch, and remove the belt cover. Then turn changeover
pulley0(Knurled
4. This
sewing
part)inthe
arrowed
directionoflow-spe^
pulley
machine may run rather unsmoothly on a cold morning
because it uses grease for the lubrication of several parts. In such a case,
allow
the
^ To
operate
machineto idle for 5 or 6 times before starting
the
sewing maclne manually;
the
work.
Turn off the power switch, remove the upper end of spring 0 , give low-speed pulley
0 two turns in the arrowed direction and the work clamp foot willcome down. Then
depress
the
starting pedal, and
the
machine can be run manually.
0
11.
MATERIALS
Material
Extra
light-weight
Synthetic
Medium-weight
Heavy-weight
fiber
material
material
material
material
AND
#11
#14
#16(DPx5)
#18(DPx5)
NEEDLES
Needle
(DPx5)
(DPx5, SUPER needle)
TO
BE
USED
Needle plate needle hole guide
D2426282C00
B2426280000
B2426280000
B242628O0OO(standard)
-4-
(standard)
(standard)
Knit
goods,
Men's
Men's
suits.
Working
Classorwork
tricot
suits.
Ladies'
Ladies'
wear,
overcoats
wear
wear
wear
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