JUKI LZ-271 Manuel utilisateur
MODEL
LZ-271
HIGH
SPEED.
SINGLE
NEEDLE.
EMBROIDERING
INDUSTRIAL
SEWING
MACHINES
Instruction
Book
L2-27t
TOKYO
JUKI
INDUSTRIAL
CO..LTD.
From the library of: Superior Sewing Machine & Supply LLC
CONTENTS
I.
GENERAL
DESCRIPTION
1
Special
features
1
2
Names
of
parts
2
3
Sewing
speed
3
4
Installing
the
machine
3
5Bobbin winder spool pin
••••
4
6Specifications 5
II
HOW
TO
OPERATE
THE
MACHINE
1
Lubrication
6
2 Oiling the
rotary
hook 6
3
Needles
7
4
Threading
the
machine
8
5
Winding
the
bobbin
thread
9
6Inserting
the
bobbin into
the
bobbin case 10
7Fixing
the
zigzag width of
throw
10
8Embroidering
with
a fixed zigzag width of
throw
12
9 How to
set
up
the
embroidering hoop 12
10
How
to
embroider
13
11
The
thread
tension
13
12
When
the
thread
breaks
14
13
How
to
use
the
attachments
15
III
ADJUSTMENT
OF
STITCHING
1
Timming
and
adjustment
of needle throw 17
2
Adjusting
the
correct
position of
the
needle
throw
17
3
Matching
the
rotary
hook with
the
needle 19
From the library of: Superior Sewing Machine & Supply LLC
I
GENERAL
DESCRIPTION
1.
Special
features
This is a high
speed
industrial sewing machine forembroidering. With
a speed of 1,700 stitches per minute, it can produce a width of throw of
12m/m (15/32") but if the machine is used at lOm/m (25/64") width of
throw, it can embroider at a fast speed of 2,000 stitches per minute.
This machine can, not only embroider designs on light weight or heavy
weight materials,
but
it
can
also
embroider
names
and
all kinds of
marks
to
produce
attractive
and
inviting embroidered work.
Fig. 1 Complete View
From the library of: Superior Sewing Machine & Supply LLC
The
design of this machine is of beautiful two-color tone and as the
lubrication is of a centralized system, it is not necessary to oil the parts
at
each
instance. Also, as the presser
bar
is of joint rod system, it is
not
to
push
the
presser
bar
up or down
when
installing an
attachment.
2.
Names
of
parts
Refer to Fig. 2 for the names of parts of this machine
(J)
Link
take-up
<3)
Frame
thread guide, upper
(D
Frame
thread
guide,
lower
(7)
Tension
disc
(D Zigzag width regulating knob
® Zigzag width graduator
©
Hand
wheel
Take-up
spring
Thread
take-up guide
Three-hole
thread
eyelet
Needle thread guide pin
Zigzag width regulating lever
Bobbin winder spool pin
— 2 —
From the library of: Superior Sewing Machine & Supply LLC
3.
Sewing
speed
As previously mentioned, the speed of this machine at the maximum
zigzag width of throw of 12m/m(15/32") is ,1700 stitches per minute and
when the zigzag width is less than 10m/m{25/64''), it can embrioder at the
speed of 2,000 stitches per minute.
The rotation of the machine determines the sewing speed. The number
of rotation varies with the electric cycle and the diameter of the motor
pulley.
(Refer
to
Table)
Speed
Cycle
Motor
pulley
1700
50-0
MTK-P0075000
60-O
MTK-P0065000
2000
50-O
MTK-P0095000
60-O
MTK-PV080000
Unless otherwise requested, this machine's motor pulley is of l,700s.p.m.
type but if a different speed is desired, please order our agents or exclusive
dealers.
The
power of the clutch motor attached to this machine is a single
phase 200
Watt
(1/4HP), so to ensure a long life of this machine, it is
highly
recommended
to
use
a
motor
pulley
of
l,700s.p.m.
speed.
^
4.
Installing
the
machine
(A)
Correct
height
Install
the
machine
on
the
table
and
shake
the
machine
a
little
to
see
if it's uniformly even.
When
all
the
corners
are
even it should not move
but
if any one of
the
corners is uneven, it will rattle.
When
it rattles, nail in a thin felt cushion pad B (B-8208-012-000) (four
of which
are
in
the
accessories box together with nails),
under
the low
corner
and
make
the
height
even. Be
sure
to
nail
in
the
head
of
the
nail
deep inside
the
pad
until it sinks into it.
Unless
the
height of the machine is installed evenly, it will not rotate
— 3 —
From the library of: Superior Sewing Machine & Supply LLC
quietly.
(B)
Leather
belt
Normally, this machine uses a leather belt, but following should be
observed:
(1)
Should not be too tight. At first, the leather belt is very stiff, so
often it is liable to be too tight- When it's too tight, the machine will
vibrate.
(2)
Joining
of the belt. Normally,
the
belt is joined with a wire.
When the joining is out of alignment or when the wire is sticking out, the
machine
cannot
be
run
smoothly.
(3)
Positions of
hand
wheel
and
puUcy- Unless the
hand
wheel
and
pulley are in correct positions, the belt might be curved or twisted, hampering
the quiet running of the machine. In such cases, move the motor position
and
correct
them.
5.
Bobbin
winder
spool
pin
For
the convenience of packing, the needle thread guide pin
and
the
bobbin winder spool pin are removed from the machine and packed sepa-
ratery
in a vinyl bag.
The
needle
thread
guide
pin
can
be lightly
tapped
in
and
inserted.
To
install the bobbin winder spool pin, remove the top cover of the machine.
Just
loosen
the
screw at
the
top of the cover
and
it will come off.
Then
insert the bobbin winder spool pin from front, plug in the
nut
from rear
and
tighten it with a wrench. (Fig 4)
Fig- 3 (D Needle thread guide pin ® Bobbin winder spool pin
From the library of: Superior Sewing Machine & Supply LLC
6.
SPECIFICATIONS
Model
Sewing speed-
Width
of
throw-
Needles
Lubrication
Usage
Single needle, lockstitch, embroidering sewing
machine
Up
to 2,000 s.p.m. (width of
throw
max.
10mm)
(25/64")
Standard 1.700
s.pm.
0~l2mm
C15/32")
DBxl
it9~itl8
(16x231,
1738)
Standard
#11
Centralized
hand
oiling type
Embroidering
work on all light weight,
medium
heavy
and
heavy weight materials
Adjustment
of width
of
throw
of throw Adjusted by the knee lifter (without setting
indicator of width
graduation)
Attachments Possible to install compass embroidering and
cord
embroidering
attachments
Sewing space 270 mm {10—5/8") (From needle drop to the
root
of
the
arm)
Size of
bed
178mmx477mm
(7-1/64"x
18-25/32")
Lubricating oil New Defrix Oil No. 1
Sewing
space-
From the library of: Superior Sewing Machine & Supply LLC
II. HOW TO
OPERATE
THE
MACHINE
1.
Lubrication
Lubricate the oil holes marked in red with New Defrix Oil No.l, 1 to 2
drops
every
day
(Fig.
5).
But
to the
holes
(i)
(3)
® ®
marked
with
heavy
red
mark,
lubricate
about
5 to 6
drops
every
day.
There
are
oil
reservoirs on these holes and from here all the essential parts are supplied
with
oil.
Fig.
5
Oiling
holes
2
Oiling
the
rotary
hook
Every day drop 1 or 2 drops of oil to the hook groove of the rotary
hook
shown
by the
arrow
in
Fig.
6.
This
oil soaks
through
the felt
which
is inside the hook and lubricates all the essential parts of the rotary hook.
— 6 —
From the library of: Superior Sewing Machine & Supply LLC
Fig.
6Oiling
spots
of
rotary
hook
3.
Needles
Select the needles according to the embroidering material and the
needle
thread.
(Refer
to
Table).
In setting the needle, be
sure
that
the carved
part
is on
the
other
side
and
the groved
part
of the needle is facing the operator. (Fig. 7)
Material
Scarf
Light
Handkerchief
weight
Blouse
Medium
Velvet
heavy
Heavy
weight
Name
mark
Heavy
weight
Needle
thread
DBxl
Embroidering
thread
(IGx23l)
(Double-thread
twist
silk)
9—Sll
i75—•?120
DBxl
Embroidering
thread
(16x231)
(Double-thread
twist
silk)
?11—J|14
S102
DBxl
(16—231)
#11-S14
DB—1
(16x231)
314-j|l8
All
color
cotton
thread
250
From the library of: Superior Sewing Machine & Supply LLC
Groove
Needle eye
4.
Threading
the
machine
To pass the needle thread,
follow
the
numerical
order
as
shown
in Fig. 8.
Start
from the needle thread guide
pin (J), (not shown in Fig. 8),
to
the
needle
(D in
order,
(Refer to Fig. 2 for complete
view)
(2)
Three-hole thread eyelet
(3)
Tension
disc
®
Take-up
spring
(D
Thread
take-up guide
(D
Thread
take-up
(Z)
Frame
thread guide,
upper
(D
Frame
thread guide,
lower
(§)
Needle
-ai_
I
From the library of: Superior Sewing Machine & Supply LLC
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