Juki 812k Setup guide

From the library of: Superior Sewing Machine & Supply LLC

ILLUSTRATE

PAR

5 LIST

FOR

HEAVY

KARPEl

Kl

G

DUTY

MACHI

E

~

.

Model

8 I

2K

·,

421

NORTH

MIDLAND

AVE.• SADDLE BROOK, N.J.

07662•

(20

1)

796·8800

(2

12) 929-4415

National

Distributors

of

Juki

& Kin

g/

me

Indu

st

rial

S

ew

/ng

Machi

n

e"

From the library of: Superior Sewing Machine & Supply LLC

OILING DIAGRAM

Fig.

I

- I -

From the library of: Superior Sewing Machine & Supply LLC

THREADING

DIAGRAM

Fig.

2

-

2-

From the library of: Superior Sewing Machine & Supply LLC

THREADING AND ADJUSTMENT

INSTRUCTIONS

FOR

KINGLINE MODEL

812K

HEAVY DUTY KARPET KING

812K

One

needle

heavy

duty

flat

bed

machine

for

overseoming

rugs

and

carpets.

Stitch

type

505-EFD-1

(modified).

----SETTING

UP MACHINE

1.

Clean

machine

thoroughly.

Fill

oiling

system

and

oil

all

bearings,

particularly

the

eccentrics

on

the

main

shaft.

Run

the

machine

slowly

for

a

minute

to

allow

the

oil

wicks

to

corry

the

oil

to

the

bearings.

See

that

the

wicks

ore

saturated

by

the

flow

from

the

oil

reservoir

and

that

they

contact

the

oil

holes

in

the

strops.

Repeat

the

oiling

and

run

for

five

minutes

at

2.000

R.P.M..

Oiling

diagram

(Figure

1)

is

available.

2.

Put

in a

new

needle,

class

1970.

size

100

(SOE)

and

check

location

of

needle

in

throat

plate.

The

needle

should

center

in

the

front

end

of

the

throat

p l

ate

needle

slot.

The

needle

point

in

its

highest

position

should

be

1}

;!"

inches

above

the

top

of

the

throat

plate

(Figure

3).

3.

Remove

the

presser

feet,

cloth

plates

and

feed

dog

for

convenient

access

to

the

machine.

Loosen

the

screw

(::::

93A)

on

the

right

side

of

the

feed

bar

and

push

the

rear

ne

e

dle

guard

(::

81225K)

for

enough

to

the

rear

to

ovoid

its

contact

i

ng

the

needle.

4.

Pla

ce

the

left

hand

looper

in

the

looper

holder

and

set

the

looper

gouge

to

~

-

4

inch.

The

looper

gouge

is

set

when

the

looper

is

at

its

farthest

poini

of

travel

to

the

l

eft

(Figure

4). This

adjustment

is

accomplished

by

rocker

and

raising

or

lower

i

ng

the

boll

Fig.

3

Fig.

4

Feed

Dog

1

II

1-z

Left

hand

l

ooper

- 3 -

From the library of: Superior Sewing Machine & Supply LLC

joint

(#

15442K)

in

the

slot.

Raising

the

ball

joint

decreases

the

looper

gauge

and

lowering

it

acts

the

reverse.

Looper

gauge

is

available

for

setting

the

looper.

5.

Set

the

left

hand

looper

so

that

it is

up

to

the

back

of

the

needle

without

deflecting

it. This

adjustment

is

readily

made

by

loosening

the

two

screws

(#

95)

in

the

looper

rocker.

6.

Set

the

rear

needle

guard

so

that

it

barely

contacts

the

needle

at

its

most

forward

point

of

travel.

7.

Set

the

distance

between

centers

(#

6038K

& #

6039K)

of

the

right

hand

looper

drive

connecting

rod

(#

81241)

straps

at

4-

%

".

This is

done

by

loosening

the

two

nuts

(:!;

269

&

:;

18)

on

the

pitman

rod

and

turning

the

rod

until

the

desired

measurement

is

obtained,

then

tighten

the

nuts

and

reassemble

the

connecting

rod

in

the

machine.

8.

Set

the

right

hand

looper

gauge

so

that

the

point

of

the

right

hand

looper

passes

~~"

to

the

left

of

the

center

of

the

needle

when

the

looper

is

at

its

extreme

left

position

(Figure

5).

The

looper

gauge

of

the

right

hand

looper

is

controlled

by

moving

the

looper

drive

lever

(:;;

81238)

on

the

cross

shaft.

To

increase

the

looper

gauge,

move

the

lever

clockwise

and

to

decrease

the

looper

gauge,

move

the

lever

the

opposite.

When

tightening

the

screws

on

the

looper

drive

lever,

make

sure

that

there

is

no

end

play

in

the

cross

shaft.

This

may

be

done

by

pushing

forward

on

the

cross

shaft

and

at

the

same

time

setting

the

looper

drive

lever

tight

up

against

the

casting.

Re-check

the

setting

of

the

looper

with

respect

to

the

needle

each

time

the

loop

er

drive

leve

r is

shifted.

I

L

Right

hand

looper

Fig.

5

9.

When

right

hand

looper

moves

to

the

right,

it

must

pass

the

needle

as

close

as

possible

without

deflecting

it. It

must

also

cross

th

e

left

hand

looper

as

close

as

possible.

The

adjustment

for

setting

the

right

hand

looper

is

made

by

loosening

the

two

screw

(:;:;:

318)

at

the

front

of

the

machine

and

moving

t

he

looper

shaft

bearing

or

sliding

block

(¢

81

255).

Moving

the

block

upward

brings

the

looper

closer

to

the

needle

and

moving

it

downward

brings

the

looper

closer

to

the

left

hand

looper.

The

loopers

themselves

can

be

turned

slightly

by

loosening

the

holding

screws

and

holding

the

l

oopers

in

the

desired

position

while

retightening

the

screws.

- 4 -

--------

From the library of: Superior Sewing Machine & Supply LLC

10.

With

right

hand

looper

at

its

extreme

left

position.

set

the

right

hand

looper

thread

take-up

eyelet

(;:=

81266KB)

in a

vertical

position

being

careful

that

the

left

hand

looper

gauge

is

not

changed

when

nut

(::::

9937)

is

loosened.

11.

Put

the

feed

dog,

cloth

plates

with

throat

plate

back

on

the

machine

and

set

the

front

needle

guard

close

to

the

needle

without

deflecting

it.

This

guard

is

readily

adjusted

by

loosening

the

screw

(::::

90)

in

top

of

the

throat

plate

in

front

of

the

needle

slot

and

moving

the

guard

into

position

and

retightening

the

screw.

Place

the

presser

feet

on

the

machine

and

check

the

vertical

movement

of

the

presser

bars

with

the

pressure

released

as

much

as

convenient.

The

bars

must

move

freely.

THIS FACTOR IS VITAL.

12.

The

height

of

the

feed

dog

is

correct

when

at

its

hightest

point

of

travel

the

tips

of

the

rear

teeth

project

1/

32"

above

the

throat

plate.

A

stop

screw

is

provided

to

maintain

the

adjustment

(Figure

3).

13.

Screw

the

edge

guide

on

to

the

cloth

plate

and

abjust

it

so

that

the

edge

guide

tongue

(:

81203KA-1)

is

against

the

presser

foot

stitch

tongue.

14.

Draw

the

thread

into

the

machine

and

start

operating

on

a

piece

of

rug

materia

l.

Threading

diagram

(Figure

2)

is

available.

1

5.

Adjust

the

stitch

length

to

give

the

desired

number

of

stitches

per

inch.

This

adjus

t

ment

is

made

by

loosening

the

stitch

regulator

stud

nut

(::::

HA

18A)

on

the

side

of

the

feed

rocker

(:::

80233)

(Figure

6)

.

Raising

the

feed

driving

arm

(::::

80651)

shortens

the

stitch

and

lowering

it

l

engthens

the

stitch.

After

the

stitch

length

is

set,

re

s

et

the

rear

need

le

guard

so

that

it

barely

contac

ts

the

needle

when

in

its

most

forward

position

of

trave

l.

Shorten

'

Lengthen

stud

nut

Fig.

6

- 5

From the library of: Superior Sewing Machine & Supply LLC

16.

Regulate

the

pressure

an

the

presser

feet

so

that

the

springs

exert

a

pressure

sufficient

to

feed

properly

. A

comparatively

heavy

pressure

is

usually

required.

17.

Adjust

the

left

hand

looper

thread

take-up

(

~

81266K)

outward

or

clockwise

until

the

left

hand

looper

thread

just

tightens

as

the

left

hand

looper

thread

comes

off

the

right

hand

looper.

{CAUTION

-

NO

LEFT

HAND

LOOPER

THREAD

SHOULD

BE

DRAWN

FROM

THE

CONE

AT

THIS

TIME).

All

the

left

hand

looper

thread

should

be

drawn

from

the

cane

as

the

left

hand

looper

moves

to

the

end

of

its

travel

to

the

right.

18.

The

needle

and

right

hand

looper

thread

tension

should

be

set

as

low

as

possible

yet

high

enough

to

give

positive

and

consistent

control

to

the

needle

and

right

hand

looper

thread.

The

left

hand

looper

thread

tension

should

be

just

high

enough

to

give

a

beaded

appearance

of

the

lower

thread

at

the

purl

or

edge.

19.

Make

sewing

test

on

a

single

thickness

of

rug

material.

If

satisfactory

samples

are

not

obtained,

check

the

following

thread

controls.

20.

NEEDLE

THREAD

CONTROL

I o

pull

less

needle

thread

into

the

stitch,

or

move

purl

down,

increase

needle

thread

tension,

or

raise

needle

frame

eyelet.

Most

of

the

needle

thread

should

be

drawn

from

the

cone

on

the

upstroke

of

the

needle.

21.

RIGHT

HAND

LOOPER

THREAD

CONTROL

To

pull

mare

right

hand

looper

thread

into

the

stitch,

or

move

purl

down,

reduce

the

right

hand

looper

thread

tension

or

move

right

hand

looper

thread

tcke-up

{eyelet

)

clockwise,

being

careful

that

the

left

hand

looper

gauge

is

not

changed

when

nut

{:::;:

9937)

is

loosened.

22.

LEFT

HAND

LOOPER

THREAD

CONTROL

The

left

hand

looper

thread

control

eyelet

(take-up)

should

be

adjusted

outward

or

clockwise

until

the

left

hand

looper

thread

just

tightens

as

the

left

hand

looper

thread

should

be

drawn

from

the

cone

as

the

left

hand

looper

moves

to

the

end

of

its

trave

l

to

the

right.

- 6 -

From the library of: Superior Sewing Machine & Supply LLC

376

@m

880687

376

~

94

\

'

~

-

~~~

\~

Rrfoi

A

l~

IV

II

J

I

ii,.,

Ol

~

l

80631

881201A

81239

i

~

0

80648

80437A

80438

880688

22574

/ 1\

,/ I \

I

~

80440

Plate

No.

1

I -

From the library of: Superior Sewing Machine & Supply LLC

89

94

376

420

22574

80437A

80438

80440

80631

80648

80649

880687

880688

881201

881201A

81239

Plate

No.

1

Set

screw

for

Hinge

pin.

Set

screw

for

Presser

bar

lifter

guide

plate

and

Looper

thread

guard.

Screw

for

Face

plate.

Lifter

lever

stud.

Screw

for

Cloth

plate.

Cloth

plate

swinging

extension

hinge

.

Spring

for

Locking

bolt.

Locking

bolt

knob.

presser

bar

lifter

guide

plate

.

Lifter

lever.

Lifter

lever

spring.

Face

plate.

Top

cover.

Cloth

plate.

Cloth

plate

swinging

extension.

Cloth

plate

swing

i

ng

extension

loc

k

ing

bolt

.

••

l3

-

2

pes.

4

pes

.

2

pes.

pe.

3

pes.

pc.

pe.

1

pe.

2

pes.

pe

.

1

pc.

pc

.

pe.

pc.

1

pc

.

From the library of: Superior Sewing Machine & Supply LLC

@

80630C

80630

@

806300

806948

29782H

81222

80681

®

#...._

!4E

/

~

0

HA66K

88062

l H

80694C

80685

80621A

so

~

80674

2539

I

~

HA81

HA95

Plate

No.2

From the library of: Superior Sewing Machine & Supply LLC

Plate

Na.

2

HA

66K

Key

far

Pulley

hub.

pc.

74E

Screw

far

Main

shaft

collar.

2

pes.

80

Screw

for

Wheel.

4

pes.

HA

81

Spat

screw

for

Main

shaft

bushing

housing.

pc.

HA

95

Set

screw

far

Main

shaft

bushing

housing.

pc.

22539

Plung

screw

for

Main

shaft

bearing

sponge

hale.

pc.

29782H

Main

shaft

assembly.

pc.

80621A

Wheel

hub.

pc.

B80621H

Wheel

rim.

pc.

80630

Ne

-

edle

lever

connecting

rod

tube.

pc.

80630C

Needle

lever

connecting

rod

tube

nut

(left

thread).

pc.

806300

Needle

lever

connecting

rod

tube

nut

(right

thread).

pc.

80652

Needle

lever

connection

bearing

(lower).

pc.

80674

Wheel

hub

lock

washer.

pc.

80681

Main

shaft

collar.

pc.

80685

Main

shaft

bushing

and

housing.

1

pc.

806948

Main

shaft

bushing,

left

and

middle.

2

pes.

80694C

Main

shaft

bushing,

right.

pc.

81222

Main

shaft.

pc.

- 10 - _ j

From the library of: Superior Sewing Machine & Supply LLC

~

80665KD

J

225608

I

95

80667

~

225608

~~

/

\.

81256A

~

\.

225608

@HAl

03~

'-_"-.

HA

1038

I - .

AS137

<?

.,~

80667

~

81256

\

~

,_

~

/

~

.

~

28C

80676AC-2

•

28C

80676AC-4

376A

~

AS137KA

~

35871A

i

376A

81266KA

Plate

No.3

-

~

!

-·

From the library of: Superior Sewing Machine & Supply LLC

28C

HS

528

88

95

HA

103B

HS

106

107

108

110-2

110-3

110-4

AS

137

AS

137A

AS

137KA

376A

HA1348

HA1349

22560B

22743

35871A

80250

80250A

80250B

80665KD

80667

80668

80676A

80676AC-2

80676AC-3

80676AC-4

81256

81256A

81266KA

Plate

No.

3

Set

screw

far

Frame

thread

eyelet.

Frame

rolling

thread

guide

axle

assembly.

Set

screw

far

Rolling

thread

guide.

Set

screw.

Frame

thread

eyelet.

Tension

past.

Tension

spring

ferrule.

Tension

reg1,1lating

nut.

Tension

spring

far

right

hand

looper

thread.

T

ensian

spring

far

left

hand

looper

thread.

Tension

spring

far

needle

thread.

Frame

thread

eyelet

support.

Frame

thread

eyelet

assembly.

Base

thread

eyelet

assembly

(twa

thread

hale).

Looper

thread

guide

set

screw.

Frame

tension

past

ferrule,

front.

Frame

tension

past

ferrule,

rear.

Set

screw

far

Frame

thread

guide.

Screw

far

Frame

rolling

thread

guide

axle.

Base

thread

guide.

Frame

needle

thread

rolling

thread

guide

assembly.

Frame

needle

thread

rolling

thread

guide

support.

Frame

needle

thread

rolling

thread

guide.

Needle

thread

guide,

(lower).

Tension

disc

stop

pin.

Needle

thread

take-up

rolling

th

r

ead

guide

roller.

Tension

disc.

Thread

tension

assembly

for

Right

hand

looper

thread.

Thread

tension

assembly

for

Left

hand

looper

thread.

Thread

tension

assembly

for

Needle

thread.

Frame

thread

eyelet.

Frame

thread

eye

l

et

assmbly.

Base

thread

guide

assembly.

-

12

-

4

pes.

pc.

3

pes.

pc.

3

pes.

3

pes.

3

pes.

pc.

4

pes.

pc.

2

pes.

3

pes.

3

pes.

3

pes.

pc.

3

pes.

pc.

6

pes.

pc.

pc

.

2

pes.

2

pes.

pc.

---------

---

-

--

-

--

-

------------

-

---

-

---

~-----------

-

From the library of: Superior Sewing Machine & Supply LLC

80673B

80644

80246

80617

29774KD

90

~

tQ

)

HA56

~

ll

0673

A

01225~

~")

~J

BP108

80656

~

80643

29066L

80650

80636A

~

2~29

~0246

;tO

~80644

88

it

88

Plate

No.

4

From the library of: Superior Sewing Machine & Supply LLC

HA

54A

HA

56

HA

58C

HA

580

HA

58F

81

88

90

91

95

HS

1000

BP

108

HA

212K

21111

22526

22565C

22729

29066L

29774KO

51134V

80046

80246

80615

80617

80636A

80643

80644

80650

80656

80659

80669

80673A

806738

80676

81203KA

81203KA-1

81203KA-2

81224K

81225

Plate

No.

4

Needle

bar

link.

Needle

clamp

nut.

Needle

bar

connection

tension

ferrule

(front).

Needle

bar

connection

tension

ferrule

(rear).

Needle

bar

connection

spring.

Spat

screw

for

Needle

lever.

Set

screw.

Screw

for

Needle

plate

needle

guard

and

Cloth

plate

edge

guide

tongue.

Screw

for

Needle

lever

link

upper

pin.

Set

screw

for

Needle

lever.

Stop

screw

for

Tension

disc.

Clamp

screw

for

Needle

bar

connection

and

Needle

lever

ball.

Thread

guide

for

Needle

bar

connection.

Needle

bar

connection

post

collar.

Screw

for

Needle

plate.

Screw

far

Needle

lever

link

lower

pin.

Screw

for

Needle

lever

ball

stud

fork.

Needle

lever

connecting

rod

upper

bearing

assembly.

Needle

bar

connection

assembly.

Needle

lever

link

assembly.

Needle

bar

connection

tension

post.

Needle

lever

shaft

bushing.

Needle

lever.

Needle

bar.

Needle

lever

ball

stud

fork.

Needle

lever

shaft.

Needle

lever

shaft

hole

plug

screw.

Needle

lever

connection

bearing,

upper.

Needle

lever

ball.

Needle

bar

connection.

Needle

bar

connection

tension

post

ferrule

(front).

Needle

bar

bushing

(lower).

Needle

bar

bushing

(upper).

Tension

disc.

Cloth

plate

edge

guide.

Cloth

plate

edge

guide

tongue.

Cloth

plate

edge

guide

assembly.

Needle

plate.

Needle

plate

front

needle

guard.

- 14 -

pc.

6

pes.

3

pes.

pc.

2

pes.

pc.

2

pes.

pc.

2

pes.

pc.

2

pes.

pc.

2

pes.

pc.

pes

2

pes.

pc.

From the library of: Superior Sewing Machine & Supply LLC

0/06\0

~

I

64Y

806668

(482C}

tlj)

~,.,~

~

3.57338

'()

"'

~

98

98 98 98 80663

!

~

a$£

1

22870

~

80632

\ 0

~~

B06668C

(482q

8

0667

I

,.

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9.5~

80267

/ (

(9

80660

1

8066

!

I

'

I

1/

1

l.J

80662A

,

~

31220KA

l

I

-- :s --

Plate

No.

5

From the library of: Superior Sewing Machine & Supply LLC

64Y

HA

65E

95

98

258

11639H

22513

22870

357338

80220C

80267

80632

80660

80661

80662

80662A

80663

80664

806668

806668C

80667

812200

81220KA

81297KA

Plate

Na.

5

Presser

spring

regulator

screw.

Hinge

screw

far

Right

presser

faat.

Set

screw

for

Presser

bar

lifter.

Screw

far

Presser

bar

collar.

Nut

for

lifter

lever

screw

pin.

Hand

I

iHer

stud

.

Set

screw

for

Presser

foot

tongue.

lifter

lever

screw

pin.

Lock

nut

far

Presser

spring

regulator

screw.

Presser

foot

shank

(right).

Hand

lifter.

Presser

bar

lifter.

Presser

bar

(left).

Presser

bar

(right).

Presser

bar

bushing

(upper).

Presser

bar

bush

i

ng

(lower).

Presser

spring

(upper).

Presser

spring

(lower).

Presser

bar

collar.

Presser

bar

collar

with

screw.

Presser

spring

pin.

Presser

foot

assembly

(left).

Presser

faat

assembly

(right).

Presser

faat

tongue.

- 16 -

pc.

2

pes.

8

pes

.

pc.

pc

.

pc.

pc

.

pc

.

pc.

pc

.

2

pes.

2

pes.

2

pes.

2

pes.

4

pes.

4

pes.

pe

.

pe.

From the library of: Superior Sewing Machine & Supply LLC

r;)

T26

81205A

93A

80666BC

~

(482C)

1t

~

97X

81225K

~

(Jlij

93A

~

HA43X

~

96

HA18A

@

:..------

81006

©Jj

---------

-

----------

29099K

81

<IIJij

Plate

No.

6

From the library of: Superior Sewing Machine & Supply LLC

SA

HA

10

11

18

HA

18A

20

HA

20A

HA

23

T

26

HA

43X

69H

AS

70A

HS

70A

81

89

93

93A

96

97X

98

29099K

80233

802348

80292

80651

80654

806668

80666BC

80696

81006

B1205A

Bl225K

Plate

Na.

6

Feed

rocker

shaft.

Feed

bar

prong.

Feed

bar

shaft.

Nut

far

Feed

cam

ailing

felt

holder.

Nut

far

Stitch

regulating

stud.

Washer

far

Feed

cam

ailing

felt

holder.

Washer

far

Stitch

regulating

stud.

Feed

bar

shoe.

Stop

screw

far

Stitch

regulating

stud

.

Feed

lift

cam.

Washer

far

Feed

dog

screw.

Feed

cam

ailing

felt

holder.

Feed

cam

ailing

felt.

Screw

far

Feed

dr

i

ving

eccentric.

Set

screw

far

Feed

rocker

and

Feed

bar.

Set

screw

far

Feed

dog.

Screw

far

Feed

bar

prong,

Feed

bar

shoe

and

Feed

bar

needle

guard.

Spat

screw

far

Feed

lifter

cam.

Screw

far

Supporting

feed

dog

.

Screw

far

Feed

bar

shaft

collar.

Feed

driving

eccentric

assembly.

Feed

rocker.

Feed

bar.

Feed

rocker

shaft

bushing.

Feed

driving

eccentric

connection.

Stitch

regulating

stud

bushing.

Feed

rocker

shaft

collar.

Feed

rocker

shaft

collar

with

screw.

Stitch

regulating

stud.

Feed

driving

eccentric.

Feed

dog.

Feed

bar

rear

needl

e g

uard.

-

IS

-

pc.

2

pes.

pc.

4

pes.

pc.

4

pes.

pc.

p~.

4

pes.

pc.

2

pes.

pc.

2

pes.

2

pes.

pc.

From the library of: Superior Sewing Machine & Supply LLC

01255

29198K

98

18

®

~~

-....--~-~

6038K

~OA

80236

~

80645

Plate

No.

7

JUKI 812K Setup guide

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