Consew 7360RA TCWL (E) User manual

MODEL

7360RA

TCWL

(E)

PARTS

INSTRUCTION

MANUAL

CONTENTS

Instruction manual

.........................................................

1-13

Parts catalogue

.............................................................

19-34

Arm and bed mechanism

...................................................................

19-20

Arm

shaft, vertical

shaft

and

thread

take-up

mechanism

........................

21-22

Feeding, feed lifting

and

rotating hook mechanism

................................

23-24

Stitch length regulating mechanism

...................................................

25-26

Presser foot mechanism

.....................................................................

27-28

Knife

actuating

mechanism

.............................................................

29-30

Reverse sewing

and

detector mechanism

.............................................

Wiper mechanism

...............................................................................

Oil pump mechanism

.......

0.0

........................................................................................................................

Oil reservoir and accessories

.....................................................

...........

Before

putting

a new machine into operation, remove

the

plugs (A) on

the

top

the

arm

and

replenish

the

oil

supply. Lift

the

presser foot

and

run

the

machine

a low speed

2000

spm

to check

that

the

oil is being

distributed

correctly

inspecting

the

window on

the

oil reservoir.

When

lubrication is normal, keep

the

machine

running

this speed

for

30 minutes,

and

then

increase

the

running

speed gradually. After a

month

running,

the

machine

can

run

maximum speed assuming

normal

working

conditions.

Fig.!

FILLING THE

OIL

RESERVOIR

The

amount

oil in the

reservoir

is controlled

through

the

reference

marks

and

B shown in Fig 2. A

indicates

the

maximum oil level,

the

mark

B is the minimum oil level.

the

oil level is below

the

mark

B refill

the

oil reservoir.

When

filling

the

reservoir, loosen

the

oil draining screw (c),

drain

offthe

remaining

oil reservoir completely,

clean

the

reservoir

and

re-tighten

the

oil draining screw (c)

and

fill

the

oil reservoir

with

fresh sewing machine

oil.

Fig. 2

REGULATING

OIL

DISTRIBUTION ON THE ROTATING

HOOK

Adjust

the

amount

ofoil used to

lubricate

the

rotating

hook

turning

the

oil flow adjusting screw (A).

Tnrn

the

screw (A) clockwise (in

the

direction of

the

+ sign) to increase

the

oil flow;

turn

it counter-clockwise

(in

the

direction

ofthe

-sign) to decrease

the

oil flow.

Fig. 3

OIL

PUMP ADJUSTMENT

During

everyday operation, adjusting the oil

pump

is not usually necessary.

the oil level

doesn't

fluctuate

the oil reservoirwindow when the machine

runs

a low speed, close the clearance on the oil bypass hole.

Adjusting. plate

fif.

'it

iii]

flJll

O.5-1.0mm

standard

clearance

95'n:iillIl

Bypass Oil hole

Fig. 4

NEEDLE INSTALLATION

Turn

the

balance wheel to lift the needle

bar

to the

upper

end

its stroke. Loosen the needle clamp screw

while keeping

the

long groove

the needle facing left; insert the needle

shank

to the bottom

the needle

socket, then tighten the needle clamp screw.

Fig. 5

CONNECTING

THE

CLUTCH

LEVER

THE

PEDAL

The

optimum tilt angle

the pedal

approximately 15 degrees.

Adjust

the

clutch

that

the clutch lever (c) aligns

with

the

draw

bar

(8)

as shown

Fig. 6. The machine pulley should rotate

counter

clockwise when viewed from the outside

it.

The

rotating

direction

motor

pulley can be reversed by

turning

the

plug

the

motor

180 degrees.

Adjust the tension ofO-Belt (F) by moving

the

motor

and

down; the

proper

tension

the

O-beIt

a slack

oflO-20

when

the belt

depressed

the center

ofthe

belt.

Fig. 6

BELT

COVER

INSTALLATION

Install

the

belt cover

for

the

sake

safety. Install

belt

cover (C)

arm

with

screw (A)

and

screw (B) ,

and

install

belt cover (E) onto

table

with

screw (D).

Fig. 7

ADJUSTING

THE

TIMING

THE TENSION DISCS

Within

the

presser

foot lift

range,

the

timing

the tension discs

can

adjusted as follows:

Remove

the

rubber

plug

from

the

back

the

arm

and

loosen

the

screw (A)

ofthe

knee lift lever (left).

Move

the

tension releasing

cam

(D) to the left for

earlier

opening

the

right

for

later

opening.

will facilitate

the

adjustment

a blockis

put

under

the

presser

foot lift.

~-e

..-

Fig. 8

THREADING

thread

the

needle,

raise

the

needle

bar

to the

upper

end

its stroke.

Lead

the

thread

from

the

spool

and

the

progression as

shown

Fig.

draw

the

bobbin

thread,

hold

the

end

the

needle

thread

and

turn

the

balance wheel to lower

the

needle

bar

and

then

lift

to its highest position.

Pull

the

ends

needle

thread

and

bobbin

thread

toward

the

front

and

under

the

presser

foot.

Fig. 9

BOBBIN WINDER INSTALLATION AND ADJUSTMENT

The

bobbin

winder

pulley

should

aligu

with

the

V belt

and

there

should

some clearance between

them.

When

the

bobbin

winder

stop

latch

lever is depressed,

the

V belt

should

contact

with

the

bobbin

winder

pulley

that

the

bobbin

winder

pulley

can

be driven by

the

V belt.

The

thread

the

bobbin

should

uniform

and

tight.

not,

turn

the

tension

stud

nut

(A)

the

bobbin

winder

tension

bracket

adjust

the

tension.

First,

loosen

the

set

screw (B) on

the

bobbin

winder

tension

bracket

and

move

the

bracket

(C)

either

left

right

as needed.

For

instance,

the

thread

wound

illustrated

figure (b), move

the

bracket

left.

wound

figure (c) move

right. After

adjusting

the

tension

make

sure

to tighten

set

screw (B).

Don

not

overfill

the

bobbin,

figure

(d).

For

best results, fill to

about

80%

capacity.

This

can

adjusted

using

screw (E).

a b d

Fig. 10

ADJUSTING

THE

PRESSURE ON

THE

PRESSER

FOOT

Adjusting

the

pressure

the

presser

foot is dependent

upon

the

thickness

the

material

being sewn.

First,

loosen lock

nut

(A).

For

heavy materials

turn

the

pressure

regulating

thumb

screw

the

direction

indicated

Fig.

(a) to increase

the

pressure.

For

light materials

turn

the

thumb

screw

the

opposite

direction as shown in Fig.

(b) to decrease

the

pressure. Once

the

appropriate

pressure

has

been

set

tighten lock

nut

(A).

Fig.ll

•

THREAD TENSION ADJUSTMENT

Thread

tension shonld

determined in

tandem

with

the

stitch obtained

adjusting

the

tension

the

bobbin

thread

and

the

needle tension Fig. 12. The tension

the

bobbin

thread

should

adjusted

turning

the

tension

spring

regulating screw on the bobbin case.

Once

is adjusted,

insert

the

bobbin

into

the

bobbin

case

and

hold

the

end

the

thread

from

the

case

and

let it hang.

the

bobbin rotates slowly

downward

the

tension is correct.

The

tension on

the

needle

thread

adjusted

turning

the

thumb

nut.

l-gIlI-Fig. 12

Fig. 13

Normal

stitch form

Needle thread

~I§@ll§@l,@'l~

Bobbin thread

Fig. 14

The

stroke

the

thread

take-up

spriug

runs

from

8mm

10mm.

When

sewing very thin fabrics,

reduce

the

thread

take-up

spring

tension

and

increase tbe

thread

take-up

spring

stroke. Conversely increase

the

thread

take-up

spring tension

and

reduce

the

thread

take-up

stroke

when

sewing

very

thick

fabrics.

adjust

the

thread

take-up

spring

tension: (Fig. 13),

first

loosen

the

set

screw (A)

then

turn

the

tension

stud

(B)

counter

clockwise to

decrease

the

tension

the

thread

take-up

spring

( C ) to zero.

then

turn

the

tension

stud

(B) clockwise till

the

spring

the

tension

regulating

bushing,

and

again

turn

the

tension

stud

(B) halfway

back

(counter

clockwise ),

After

tbe

adjustment,

tighten

the

set screw (A).

Adjusting

the

thread

take-up

spring

stroke: (Fig. 14) loosen

the

set

screw (B)

turn

the

stud

increase

the

stroke

turn

stud

(C)

counter

clockwise to decrease

the

stroke.

After

making

the

adjustment,

tighten

set screw (B).

SYNCHRONIZATION

THE

NEEDLE

WITH

THE

ROTATING

HOOK

When

the needle

bar

raised

from

its lowest position

the

gap

should

equal

that

illustrated

(A)

Fig. 15.

The

hook

point

(D, Fig. 16)

ofthe

bobbin

should align

with

the

center

line

ofthe

needle

and

1- 1.5

above

upper

end

the

needle eye (Fig 15).

1.0-1.5.

Fig. IS

Fig. 16

The

clearance between

the

bottom

the needle notch

and

the

hook

point

should be approximately

0.05

(Fig. 16).

ADJUSTING STITCH

LENGTH

AND REVERSE FEEDING

The

stitch length

can

adjusted

turning

dial (A).

The

figures

the

face (B)

ofthe

dial show

the

stitch

length

mm.

The

reverse feed

lever

must

depressed while

adjusting

the

stitch length. Reverse feeding

starts

when

the

reverse feed lever (c) is depressed, the machine will feed

forward

again

when

the

reverse feed

lever is released.

Fig. 17

ADJUSTING

THE

POSITION

THE

FEED

DOG

AND NEEDLE

Turn

the

balance

wheel to lower

the

Feed

Dog (A).

When

the

top

the

feed

dog

is flush

with

the

Throat

Plate

Surface

(B),

the

Needle

Point

(C)

should

3mm

below

the

surface

ofthe

throat

plate.

The

adjustment

should

made

adjusting

the

position

ofthe

feed cam

and

feed lift

cam

(Fig. 19).

Fig.

Standard

position is shown

Fig. 19.

For

the

third

screw (A)

feed

cam

and

the

second screw ( B )

feed lift

cam

Arm

Shaft

Oil Hole (C) is

set

the

direction

the

balance

wheel

turning.

Fig. 19

STITCH

LENGTH ADJUSTMENT

Loosen

Screw (A) to

adjust

Stitch

Length

Adjusting

Cam

(B).

Turn

the

right

narrow

the

stitch length

for

forward

stitches,

and

widen

for

reverse;

turn

left to widen

the

stitch

length

for

forward

stitches,

and

narrow

for

reverse.

Fig. 20

FEED

DOG HORIZONTAL ADJUSTMENT

Lift

the

front

the feed

dog

prevent

the

fabric

from

puckering.

Lower

the

front

the

feed dog to

prevent

the

fabric

from

tearing

the

bobbin

thread

breaking.

Mark positipn

Feed dog

eccentric shaft

-""''''''''''

'Standard

@ Level

d'\

......

The front

.....

Above the

max.

ffi..JIL.U

The front down

.......

the

max.

Fig.

THREAD CUTTING MECHANISM

The

thread

cutting

mechanism

adapts

the

hook

shaft

cam

driving

for

thread

cutting.

thread

cutting

electromagnet

works,

and

after

f'mishes

trimming

the

thread,

reset

thread

cutting

cam

crank

once,

otherwise this

may

cause

the

movable

knife

and

needle to collide

and

damage

them.

KEY

FOR

Fig. 22

-fixed

knife support 8sm.

-thread

cutting cam.

E -

soh

thread.

-stopper.

-cutter

driving shaft.

L - knife{leftL

N - thread retainer.

Fig, 22

B - knife support

a5m.

(left)

o-thread cutting electromagnet.

F - electromagnet a5m

I - thread cutting cam crank.

K - cutter driving

crank.

-fixed

knife.

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