Brother 082-8792 Manual de usuario

INSTRUCTION

MANUAL

FOR

BROTHER

082-8792

SINGLE

NEEDLE

ADJUSTABLE

TOP

AND

BOTTOM

FEED

LOCK STITCH

MACHINE

NAMES

MAIN

PARTS

DB2-

B792

Usc

Sewing speed

Maximum stitch length

Ill

ank you very

for

pur

cha

BROTH

ER sew

machine

The

full pe

rform

ance

new

wing

chine depends, a b

ove

all,

ect op

era

on.

sure to

care

fully read

the

owi

ng ins

truct

ns before use.

003

I - 013 - 015

For medium

als Gathering

4500 spm 3500 spm

Maximum upper

feed

amou

0 Nee

bar

Presser-regulation

thumb

scr

ead

tain

e-t

ens

ion

0 Pulley

0 Fee

d-r

everse lever

(

HOW

TO INSTALL THE

MACHINE

Table

Pre

ot heig

(Knee lifter)

Feed

dog

height

ccdlc

Usc

Shirring dev

0.8

DB X I

Group A I Group B Group L

--------1

cluded

)

* Fit the h

ead

hinges 0 in the table slot, fit it to

the

rubb

er hinge b

the

and

ace

the head onto the

rubb

pad

s 0

at the

four

rners.

* When you u

ode

l DB2- 8792-013,

5 (p

eda

l system), please make a hole

for

chain

n on the figure

above

(

ADJUSTMENT

THE

KNEE

LIFTER

STOPPER

)

* L

oose

e nut and a

dju

the

kne

ter

sto

that

ere

isa

bout

2mm

rance

een the knee lifter 0

and

knee lifter

pusher

bar

sh the knee pad, l

nut

and

adjust the

ght

fter st

oppe

there

about I

eara

nce betw

the oil

pan

and

the knee lifter 0 .

- 1-

From the library of: Superior Sewing Machine & Supply LLC

[

HOW

INSTALL THE BELT

COVERS

Stud

(black)

Spring

wash

HOW

INSTALL THE BOBBIN

WINDER

)

* Install

the

bobbin

the

tabl

e with

two

screws

(Install it

that

the

bobbin

nder

pulley 0 will

not

slip.)

the

ack

stud

into

the

back

the

machine

head

Screw

the

white

into

the

machine

ead.

Temporarily

tighten

screw

and

the s

ing

washer

the

white s

tud.

Install belt

cove

r U

with

screw

shown

the

figure

the

left.

Install

belt

cover

U with

screw

and

the

spr

ing

washer.

•

When

sta

lling belt

cover

U, please

bring

down

the

machine.

6. Install belt

cover

D with

rews

and

washers.

•

When

installing belt

cover

D, pl

ease

set up

the

machine.

When

placing

the

elt,

rem

ove belt

cover

(

HOW

TO INSTALL THE SPOOL HOLDER BASE )

• Install the

spool

holder

base 0

the

right

corne

the

table

with screws

- 2 -

From the library of: Superior Sewing Machine & Supply LLC

[ LUBRICATION

1. Lubrication

( I) Su

ly oil sl

the

mark

the left ("

G H").

If the o

level falls bel

the

mark

at the right

("LOW")

add

(2) If the o

becomes

contaminated,

rem

ove

the

oil

cap

0 and

cover

rew G.

(3) Wipe

away

contami

ion fr

the

gnet

* Use

e oil specified

BROT

ER:

Hi-White 70.

2. Oiling

* Before using

the

mach

ine,

sure to s

ply one

two

drop

the

point

ind

icated by the

arrow

ADJUSTMENT

OF OIL SUPPLY

AMOUNT

ARM

SHAFT

AND

ROTATING

HOOK

€1D

More oil

CID

* Re

the f

ace

ate

and

adju

st the lubrication

for

the

arm

aft

turning

the

0 .

* Lower

the

ead

, and

st the lubri

catio

for

rotat

ing

hook

turni

ROTATION

DIRECTION

THE

MACHINE

)

* The

correct

rota

tin

direct

ion

the m

achine

unterclockwise as viewed

from

the pulley side.

e belt0 ,

and

adjust

e belt

ten

sion by

turn

ing the nut

G so that

the

belt

can

pushed

inward

about

15 - 20mm.

* When

the

mach

ine

run

le, be s

e to r

presser

ot.

- 3 -

From the library of: Superior Sewing Machine & Supply LLC

* Insert the needle 0 all the way, making sure that the long

groove

the needle

the left, and tighten by using the set

screw

(I)

Fit the bobbin 0 onto the bobbin winder spindle

(2)

Push the bobbin winder stop latch 8 completely upward.

(3)

After winding the thread around the bobbin 0 a

few

times in

the direction

the arrow, operate the machine.

(4)

the thread cannot be wound evenly, adjust the bobbin

winder tension bracket8 by moving itto the left

rightafter

loosening the set screw

* To wind more thread onthe bobbin

tighten theadjustment

screw

Raise thread take-up

to its highest position

iJif:f>wiliQJ•fB1~Jl\11§)._~fi

m_f.liE:·-~a~o:~JIJ:t:Nc:~~~;

.....

---~

--"''

- -

-·

·-· ·-·

(I)

Raise the needle above the needle plate.

(2)

After lifting the latch of the bobbin case

remove the

bobbin case.

(3)

The bobbin 8 will come

out

when the latch

released.

Delivery eye

(I) Insert the bobbin into the bobbin case.

(2)

Pass the thread through the slot 0 and under the tension

spring

(3)

Pull

out

the thread from the delivery eye

one end

the

tension spring

-4-

From the library of: Superior Sewing Machine & Supply LLC

(

THREAD

TENSION

Stitches

when

upper

tension

too

loose

Stitches

when

upper

thr

ead

tension

tight

deal

eam

tension

* Adjust the screw 0

that

the lower thread tension is

just

rong

enoug

prevent the bo

bbin

case

from

falling by its

own

weig

when it is suspend

by holding the

end

the lower

thr

Adjust

e tension

the

upper

thread

the tension

contro

nut

own

in the figure

above

after

lowering the

esser foot.

Ill Thread

take-up

spring

The

sta

ndard op

era

ting

rang

the

thread

take-up

spring is 7

~ lOmm.

The

tandard

ten

sion

is 25

grams.

adju

st the

operat

ing range, loosen

the

scr

and

turn

the

upper

thread

tension assembly.

adjust

the tension, in

sert

the tip

a screwdriver

into

the

tension stud 0 ,and tu

necessary.

[

~_A_D_J_U_S_T_M_E_N_T_O

F_P_R_E_S_S_E_R

_F_O_O_T

Es_s_u_R

__________________________

)

Nut

(

ADJUSTMENT

UPPER

FEED

PRESSURE

e press

ure

materials

dur

ing sewing must be

weak

possible

but

still

enough

to prevent slippage. Adjust,

necessary,

using the adjust

ment

screw 0 .

* Loosen the

adjustment

nut

before

adjusti

ng.

)

* Adjust the

upper

feed pressure by t

urning

the

adjustmen

upp

feed dial 0 so

that

the

upp

feed

dog

will feed

the

materia

rmly

and

securel

you

make

the u

pper

feed pressure stronger, the

upp

efficiency will be increased.

you

make

it weaker,

the

upper

feed efficiency will be

decrea

* Be s

not

make

the

upper

feed press

o st

rong,

because, if

is,

the

upper

feed

dog

ll li

the

presser foot,

causing

e material

slip.

- 5 -

From the library of: Superior Sewing Machine & Supply LLC

(

ADJUSTMENT

OF FEED

DOG

HEIGHT

]

'----·

----------

0.8mm

When

the

feed

dog

0 is

its highest

position

above

the

needle pl

ate

the

standard

height

0.8mm.

st the height

the

feed

dog

0 ,

move

it to the highest

position

above

the

needle

plate,

loose

n the set

rew 8 ,

and

raise

ower

eed

lift

ing

arm

0 .

ADJUSTMENT

OF PRESSER

FOOT

HEIGHT

6mm

(

ADJUSTMENT

OF STITCH LENGTH

Feed adjustment

_.......

dial assembly

-·

Model

082-

8792-003

The

sta

ndard

height of

the

esser

foot

0 is

6mm

when

it is

raised by using

the

knee

fter

d locked by the

presser

foot

topper

Loo

sen

the

nut

the

adjustment

screw

and

then

the

pre

foot

adjustment

scr

that

pressure

will be

app

lied

the presser foot.

Loo

the

set

screw 0 ,

and

adjust

the

presser

foot

heig

raisi

owering

the presser

bar

0 .

Feed adjustment

dial assembly

Model

013

2- 8792-

013.0

ess

the

reverse l

ever

the

center

posi

on,

set the

numb

on the feed

adjustment

dial which

pond

the

desired stitch

leng

(I - 4 on

mode

ls 003

and

013,

and

I - 5 on model 015)

the"

o'clock"

on,

and then release

the

reverse lever0 .

(When

ttin

the

reverse l

ever

the

cent

position,

rtain

ess it a

the way into position.)

The

amo

unt

feed be

mes

greater

as the

number

becomes l

arger.

The

maxi

mum

stitch length

mode

ls 003

and

3 is 4 mm, a nd

the

ximum

mode

5 is 5

maxim

stitch leng

ktack

sewing, however, is

approximate

ly 2 mm.

Ill

Reve

rse-operation

mec

hanism

When

the

reverse le

ver

0 is

essed,

the

mat

ial will be fed in

the

reverse direction. Wh

the

reverse leverisreleased, it will

return

its original

tion

and

the

mat

ial will

automati

y be fed

the

forw

direction

-6-

From the library of: Superior Sewing Machine & Supply LLC

(~_

A_D_

O_F_U_P_P_E_R

F_E_

A_M

O_U_N_T

__________

____________

__________

Upper feed adjustment dial assembly Upper feed stopper dial

Indication pin

Upper feed adjustment dial assembly

Feed

a d

justmen

dial assembly

,______,

Model 0 82- 8792-003 Model

2-8792

013.015

082

8792

ess the reverse l

eve

r 0 to

e ce

er p

ition, and after

ttin

g the

red

( I

the upper feed adjust

men

t dial

assembly to the " 12

clock" p

ition, release the r

eve

rse lev

e u

er feed

amo

unt

eco

the

numb

er becomes larg

er.

ximum feed amo

unt

= 6

082

8792

013

* Align the nu

mber

6 (on the

upp

er feed stop

al) wi

th th

e i

ndicati

ess the reverse l

ever

0 to the center position,

and

after a

gning the

numb

er (I

the uppe rfeed

adj

ustme

d ial

bly wi

the i

ndi

cation

, release the rever

lever.

e up

per

feed amount b

eco

mes gre

ate

r as the n

umb

er b

eco

mes larger.

-8792-015

* Align the

num

r 8 on the upper-f

eed

stoppe

r dial with

e i

catio

n pin.

Press the reverse lever 0 to the cent

n, align the des

num

ber

(

I-

8) of

e u

pper

-feed

adju

stme

dia

lwith the in

dica

ion

pin, a nd

ease

the reverse l

ever

0 .

The

amo

unt

per feed be

comes

grea

as the nu

beco

mes l

arge

[~_

A_D_

O_F_S_E_W

____

____________________________________

Upper feed adjustme

dial assembly \\ .

Feed adjustme

mbly 1

del

2- 8792-003

justment

dial ass

embt

Upper

feed

adjustment

dial assem

Model

082

- 8792- 013

The lower material is long.

e upper material is long.

* If the lower mat

ial is l

g when s

ing is finished, set the u

ppe

r f

eed

jus

men

t d i

ass

emb

ly to a sma

ber,o r set the feed

adjustme

dial assembly to a l

arger

num

ber.

* If the

upper

materia

l is l

ong

ng is

nished, set

e u

pper

feed a

ustm

t dial asse

larg

umbe

set

e feed

stme

dial assembly

a s

ber.

* If the

uppe

r feed

adju

ment

dial

to be turned, first

tur

the

upper feed s

topp

dial

the

maximum

umbe

r, and t

hen

turn

the

er feed

adj

stment

dial.

Turn

pper

feed adjustme

dial

assembly and the feed adjustme

dial

assem

bly

ttle by little

e wh

there

sewing

lag.

From the library of: Superior Sewing Machine & Supply LLC

(

GATHER

SEW

Upper

feed a

djustment

dial

assembly

---

- ·---...

Upper

feed

adjustment

assembly

)

Model Model DB2 8792

013.015

* Use

gather

type

gauge

for

gather

sewing.

* Use gr

oup

group

replacement

rts

for

tuck

sewin

The

tuck

parato

r en

beautifu

l tuck sewing.

Gath

wing

Ill Sew ing me

Turn

e feed

adju

tment

dial

set

desired

titch

length

Set

the

upp

er feed

adjustment

dial

ition

in which

the

amoun

t of

upper

feed

larger

than

that

lower

feed.

3. B

ecause

the

amount

ering

differs

acco

ing

the

type

material

being

sed,

the

ength

e stit

and

factors

the

approp

iate

amount

st be

determined

and

by u

sing

the

adju

dial.

Partial

gathering

ssible

with

model

082

-8792-013

and

- 015

Set

feed

adjustment

dia

the

des

ed s

titc

h le

ngth

Set

the

upp

feed s

topper

dial

to th

maximum

number.

3. Use

upper

feed

adj

tment

dial

to e

limin

ate any s

ewing

lag.

When

the

sew

pedal

0 is

depressed.

the

machin

will begin

gat

wing

When

e pe

dal

releas

ed.

the

mach

ine will

resum

normal

wing

(Use

the

upper-feed

opper

dial

adjust

the

gat

desi

amount.)

When

the

gathe

r-s

ing

pedal

depr

essed,

material

will

sewn wi

th th

amount

feed

set

by the

upp

er feed st

oppe

dial.

When

the

peda

l is releas

ed,

the

material

sewn

with

amount

eed

set

the

upper-feed

justment

dial.

INSTALLING

THE

GATHERING-SEPARATOR

[Standard equipment on

082

8792-015]

I. Insta

the guide

bar

using

screw

and the

0 .

Separator-p

late

nst

e guide b

that

it is in

dire

contact

proj

ecting

part.)

Fig. A

Separator-

ate

2. Fit

e se

parator-plat

assemb

ly 0

the

ide

bar.

and

then

temporari

tight

en with

grip

0 .

Adjust

sew

ing

mar

gin by us

ing

grip

and

en ti

ghten

grip

rew 0 firmly.

* R

efe

figure A

for

e alig

nment

the

front

of the se

parator-plate.

(Install

e separ

ator-p

ate

that

e needle wi

not

into

con

tact

with

it.)

8 -

From the library of: Superior Sewing Machine & Supply LLC

Model

082-8792-003

Model

082-8792-013,

015

I. Turn the upper feed adjustment dial assembly to set the upper feed amount to maximum.

Turn the machine pulley slowly.

The minimum clearance between the upper feed dogand the presserfoot should beapproximately

1.0

mm when the forward-pulling

type upper feed dog

used, and

2.5

mm when the gathering type upper feed dog

used.

4. Loosen the screw

and

adjust the clearance by moving the upper feed

arm

forward

backward.

1. Needle bar lift amoung

i : Reference line

I '

• j

I / 2.2mm

Fig. A

* Turn the machine pulley toward you. When the need

leO

the position

2.2mmabove

the lowest position, loosen

thesetscrewf),

and adjust so that the rotating hook point 0

·the center

the needle

* Adjust so that the clearance between the rotating hook point 0 and the needle 0

0.05

0.1

mm.

Needle bar height

•

Reference line

Fig. B

* Loosen the set screw

and raise

lower the needle bar 0 so that the clearance between the upper edge

the needle hole and

rotating hook point 0

about 0.5 mm when the rotating hook point coincides with the center line

the needle

* Refer to figure A for the lowest position of the needle bar

and to figure B to raise the needle

bar

0 by 2.2 mm.

-9-

From the library of: Superior Sewing Machine & Supply LLC

~~·1i~*

me~

:~i~~-~·~t~~tse

~~*a~s:

···-

~..;.:.:;__;~~-

. i '

-'"---~·

How

to remove the presser foot, upper feed dog, needle plate and feed dog

•

(I) Loosen the set screw

and then remove the needle

(2)

Remove the set

screw8,and

then remove the

presserfootG.

(3)

Remove the hexagonal bolt

and then remove the upper

feed dog

(4)

Remove the cap screw

and then remove the needle plate

••

(5)

Remove the set screw

f),

and then remove the

feed

dog(!).

* For model

DB2-B792-015,

loosen the hexagonal bolt

and then remove the upper feed dog

How

to attach the presser foot, upper feed dog, needle plate and feed

dog

---:~--

•

r----

-----

-~jii

Jl,

'-8

Slide plate

•

(I)Temporarily tighten the

feed

dog(!)

using thesetscrew

f).

(2)

Attach the needle plate 0 by using the cap screw

* Turn the machine pulley to move the feed

dog(!),

and then

secure it

place, by using the set screw

f),

so that there are

front/back and left/right margins

the grooves

ofthe

needle

plate

* Confirm the height

the feed dog. Refer to page 6.

(3)

Attach the upper feed dog 0 by using the hexagonal bolt

(4)

Attach the presser foot 8

using the set screw

* Confirm the height

the presser foot

Refer to page

* Confirm the clearance between the upper feed dog 0 and the

presser foot G. Refer to page

(5)

Attach the needle 8 by using the set screw

6mm

-10-

From the library of: Superior Sewing Machine & Supply LLC

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