JUKI LZ-271 Manuale utente

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

GENERAL

DESCRIPTION

Special

features

Names

parts

Sewing

speed

Installing

the

machine

5Bobbin winder spool pin

••••

6Specifications 5

HOW

OPERATE

THE

MACHINE

Lubrication

2 Oiling the

rotary

hook 6

Needles

Threading

the

machine

Winding

the

bobbin

thread

6Inserting

the

bobbin into

the

bobbin case 10

7Fixing

the

zigzag width of

throw

8Embroidering

with

a fixed zigzag width of

throw

9 How to

set

the

embroidering hoop 12

How

embroider

The

thread

tension

When

the

thread

breaks

How

use

the

attachments

III

ADJUSTMENT

STITCHING

Timming

and

adjustment

of needle throw 17

Adjusting

the

correct

position of

the

needle

throw

Matching

the

rotary

hook with

the

needle 19

From the library of: Superior Sewing Machine & Supply LLC

GENERAL

DESCRIPTION

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

can

also

embroider

names

and

all kinds of

marks

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

each

instance. Also, as the presser

bar

is of joint rod system, it is

not

push

the

presser

bar

up or down

when

installing an

attachment.

Names

parts

Refer to Fig. 2 for the names of parts of this machine

(J)

Link

take-up

<3)

Frame

thread guide, upper

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

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

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

use

motor

pulley

l,700s.p.m.

speed.

Installing

the

machine

(A)

Correct

height

Install

the

machine

the

table

and

shake

the

machine

little

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

the

accessories box together with nails),

under

the low

corner

and

make

the

height

even. Be

sure

nail

the

head

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

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.

Bobbin

winder

spool

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

can

be lightly

tapped

and

inserted.

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

SPECIFICATIONS

Model

Sewing speed-

Width

throw-

Needles

Lubrication

Usage

Single needle, lockstitch, embroidering sewing

machine

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

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

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

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.

Oiling

holes

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

Fig.

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

rotary

hook

Needles

Select the needles according to the embroidering material and the

needle

thread.

(Refer

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

Threading

the

machine

To pass the needle thread,

the

numerical

order

shown

in Fig. 8.

Start

from the needle thread guide

pin (J), (not shown in Fig. 8),

the

needle

(D in

order,

(Refer to Fig. 2 for complete

view)

(2)

Three-hole thread eyelet

(3)

Tension

disc

Take-up

spring

Thread

take-up guide

Thread

take-up

(Z)

Frame

thread guide,

upper

Frame

thread guide,

lower

(§)

Needle

-ai_

From the library of: Superior Sewing Machine & Supply LLC

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