Juki LZ-271 Instruction Manual

MODEL

LZ-271

HIGH

EMBROIDERING

SPEED.

INDUSTRIAL

SINGLE

SEWING

NEEDLE.

MACHINES

Instruction

Book

TOKYO

JUKI

INDUSTRIAL

L2-27t

CO..LTD.

CONTENTS

GENERAL

3 4

5 Bobbin winder spool pin

6 Specifications 5

HOW

2 Oiling the

4 5

6 Inserting 7 Fixing 8 Embroidering

9 How to

DESCRIPTION

Special

features

Namesofparts

Sewing Installing

Lubrication

speed

the

OPERATE

rotary

Needles

Threading Winding

the

zigzag width of

setupthe

How

embroider

The

thread

When

Howtouse

the

tension

thread

the

machine

••••

THE

MACHINE

hook 6

machine

bobbin

bobbin into

thread

the

bobbin case 10

throw

with

a fixed zigzag width of

throw

embroidering hoop 12

breaks

attachments

3 3

8 9

10 12

III

ADJUSTMENT

Timming

Adjusting

Matching

and

the

STITCHING

adjustment

correct

rotary

position of

hook with

of needle throw 17

the

needle

the

needle 19

throw

Special

features

GENERAL

DESCRIPTION

This is a high

speed

industrial sewing machine for embroidering. 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, produce

attractive

butitcan

and

also

embroider

inviting embroidered work.

names

and

all kinds of

marks

Fig. 1 Complete View

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

push

the

Names

presser

parts

bar

up or down

bar

is of joint rod system, it is

when

installing an

attachment.

not

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

(J)

Link

take-up

<3)

(7)

Frame

Tension

thread guide, upper

thread

guide,

lower

disc

(D Zigzag width regulating knob ® Zigzag width graduator

Hand

wheel

Take-up

Thread

Three-hole

spring

take-up guide

thread

Needle thread guide pin

Zigzag width regulating lever

Bobbin winder spool pin

— 2 —

eyelet

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.

(RefertoTable)

Speed

1700

2000

Cycle

50-0

60-O

50-O

60-O

Motor

MTK-P0075000

MTK-P0065000

MTK-P0095000

MTK-PV080000

pulley

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.

phase 200

highly

(A)

if it's uniformly even. but

of which

corner

deep inside

The

power of the clutch motor attached to this machine is a single

Watt

(1/4HP), so to ensure a long life of this machine, it is

recommendedtouseamotor

Installing

Correct

Install

if any one of

When

and

Unless

the

machine

height

the

machine

the

When

the

corners is uneven, it will rattle.

it rattles, nail in a thin felt cushion pad B (B-8208-012-000) (four

areinthe

make

the

accessories box together with nails),

the

height

pad

until it sinks into it.

even. Be

height of the machine is installed evenly, it will not rotate

pulleyofl,700s.p.m.

table

and

shake

all

the

corners

suretonailinthe

speed.

the

machinealittle

are

even it should not move

under

headofthe

the low

see

nail

— 3 —

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

cannotberun

(3)

Positions of

smoothly.

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

Bobbin

For

them.

winder

spool

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

install the bobbin winder spool pin, remove the top cover of the machine.

Just

loosen

the

screw at

insert the bobbin winder spool pin from front, plug in the and

tighten it with a wrench. (Fig 4)

guide

the

top of the cover

can

be lightly

tappedinand

and

it will come off.

inserted.

nut

from rear

Then

Fig- 3 (D Needle thread guide pin ® Bobbin winder spool pin

SPECIFICATIONS

Model

Sewing speed-

Width

throw-

Needles

Lubrication

Usage

Adjustment

throw

of throw Adjusted by the knee lifter (without setting

of width

Single needle, lockstitch, embroidering sewing

machine

to 2,000 s.p.m. (width of

(25/64")

Standard 1.700

0~l2mm

DBxl

Centralized Embroidering

heavy

and

s.pm.

C15/32")

it9~itl8

(16x231,

hand

work on all light weight,

heavy weight materials

indicator of width

oiling type

graduation)

throw

1738)

max.

10mm)

Standard

medium

#11

Attachments Possible to install compass embroidering and

cord

embroidering

Sewing space 270 mm {10—5/8") (From needle drop to the

Sewing

Size of

space-

bed

rootofthe

178mmx477mm

arm)

attachments

(7-1/64"x

18-25/32")

Lubricating oil New Defrix Oil No. 1

II. HOW TO

Lubrication

Lubricate the oil holes marked in red with New Defrix Oil No.l, 1 to 2

drops

every

day

(Fig.

heavy

red

mark,

lubricate

reservoirs on these holes and from here all the essential parts are supplied

with

oil.

5). about

OPERATE

But

to the

5 to 6

THE

holes

drops

MACHINE

(i)

(3)

® ®

every

day.

marked

There

with

are

oil

Fig.5Oiling

Oiling

hook

is inside the hook and lubricates all the essential parts of the rotary hook.

the

rotary

Every day drop 1 or 2 drops of oil to the hook groove of the rotary

shown

by the

hook

arrowinFig.6.This

— 6 —

holes

oil soaks

through

the felt

which

+ 16 hidden pages