Highlead GC22618-1B Instruction Manual

iii.

® HIGHLEAD

GC22618-1B

Cylinder-Bed Unison Feed

Sewing Machine

INSTRUCTION MANUAL

CATALOG

1.

Safety precautions:

1)

When turning the power on, keep your hands and fingers away from the

area around/under the needle and the area around the pulley.

off

2) Power must be turned

operator leaves the seat.

3) Power must be turned

removing the

4) Avoid placing fingers, hairs, bars etc., near the pulley,

winder pulley, or motor when the machine is in operation.

5) Do not insert fingers into the thread take-up cover, under/around the

needle,

"V"

belt, adjusting the machine, or when replacing.

or

pulley when the machine is

when the machine is not in use, or when the

off

when tilting the machine head, installing

"V"

belt, bobbin

in

operation.

2. Precautions before starting operation:

1)

When a new sewing machine

of

direction

machine nameplate.

the pulley with the power on.

2) Verify the voltage and phase (single or three) with those given on the

is

first turned on, verify the rotational

3. Precautions for operating conditions:

1)

Avoid using the machine at abnormally high temperatures (35°C or

or

higher)

low temperatures ( 5

2) Avoid using the machine in dusty conditions.

OC

or

lower) .

or

4. Specifications:

Max. Sewing Speed

Needle

Needle Bar Stroke (mm)

Thread Take-up Lever

Max.Stitch Length (mm)

Presser Foot Stroke

Alternating Movement (mm) 2.0-6.0

(rpm)

~troke

(mm) 72.1

Byhand(mm)
By knee (mm)

1

2,200

DPX17

34.2

6

8

14

22#

5.

Preparation

1)

CleaniDg 1he

Before leaving

rust-preventive

during stoJage

1)

Examination

Though

factory, the machine parts
banspotlalion.
cleaning

evay

the

before

machine

the

grease,

and

shipment. This grease must

machine is

~

joiL A thorough examination must

machine..

starting

factory,

which

Tmn

may

inspeded

may

the balance wheel

obsbuclion, parts collision, uneven

adjuslmcot

use

for

wbich

material.

must

3)

Lubrication

When

a

new

a long time is

anowheads

Please
Please

use~

ap6ft

be

made

machine

to

~need

spindle

pnsser

accordingly before run-in operation.

begins

to

be

used

to

be

oil

foot

operation:

the

machine

be

hardened

be

and tested slricdy before leaving the

be

loose

or

resislance

be

again,

lubricated.Fig.l)

wheo

used

it

the

or

or

an

must

machine

parts

are

coated with

and

c:ontamioated

removed with gasoline.

deformed

to

abnormal noise.

old

be

lubricated fully.

after long distance

be

performed after

see

if

there is running

If

these

machine which left

(fhe

is

operated without

by

dust

exist,

out

spots

of

Fig.

I

2

4)

Run-in

A

new

being lubricated sufficiently, each
increasing speed

done.

6.

How

Note:
This machine

according to the thread rightly. (Thread
freely.)

Insert

tighten

groove

operation

machine runs

to

the maximmn according

to

attach

Before attach the needle, be

's

the

needle

the

screw keeping

in

the

needle

Long groove

facing

to

the

left

.

at

a low speed ( 1600rpm)

a needle (Fig.2):

needle size is DPX17

until

it

boaoms.

facing

to

the

1he

and

lang

left:.

of

for

about a month after

parts will achieve its best state. Then

to

sure

need

the natme

to

tmn the

#122.

Needle

to

pass

X

power

size

the

pinhole

of

the work

switch

must

musl

ofi.

be selected

of

the needle

X

he

Fig..2

7.

Winding

1) Push a bobbin on

the

spindle

will go.

bobbin

(3)

2)

Pull

as

the

winder

far

out

lower

as

it

the

thn2d:

(Fig.3):

r--------------.,.

thnnn and wind thread

around the bobbin

several

circles clockwise;

for

F"rg..

3

3

-----

3) Push the lever 4 backward so that the wheel

"V" belt, then start the machine.

4) The pulley will separate from the "V" belt automatically after the

bobbin is filled with thread.

8. Adjustment

I)

In case

Loosen the screw

right or to the left as may

2) Adjustment

Adjusting screw
screw will increase the amount, otherwise the amount
decrease.

3) Winding strength

Adjusting the nut

Adjusting screw 6 can adjust the amount
screw will increase the amount, otherwise the amount
decrease.

9.

How

shown in Fig.

to route the upper thread (Fig.4):

Raise needle bar to its highest possible position, and perform threading as

of

the bobbin winder: (Fig.3):

of

uneven winding

5

in

be

of

the

amount ofthe thread

6 can adjust the amount

7 can adjust the winding strength.

the tension bracket and move the bracket to the
required.

of

the pulley touches the

of

the thread. Tightening the

of

the thread will

of

the thread. Tightening the

of

the thread will

Fig.4 Fig.S

4

10. Removing and inserting the bobbin (Fig.5):

1)

Taking out the bobbin: open the cover, take out the bobbin.

2) Inserting the bobbin: replace the bobbin into the shuttle bobbin case,
shutdown the cover. Be sure to make the bobbin rotate counterclockwise and
pull out the thrum.

11.

Adjustment

1)

The tension
thread must be equal so as to adopt normal stitch.
(Fig.6 a)

of

the thread tension (Fig.6,

of

the upper and lower

:.

Fig.6

7,

8):

T]cJCJif:fOC!CJ-

a

b

c

2) Tension

thread (Fig.7)

Before adjusting the
tension
should be certain that the
presser foot
not in other position.
Adjusting the thumb nut can
adjust the tension
upper thread. Rotating the
thumb nut clockwise, the
tension
will increase. Otherwise, the
tension
will decrease.

thread (Fig.S)

clockwise will increase the
tension

of

of

of

3) Tension

Turning the large screw

of

of

the upper

the upper thread, it

is

let down but

of

the

the upper thread

the upper thread

of

the lower

the lower thread.

Fig.7

Fig.S

5

Otherwise, the tension

of

the lower thread will decrease.

12. Adjustment

I)

Pressure should be adjusted according to the

material to be sewn.

2) Pressure on both the walking foot and the

presser foot can be adjusted.

3)

Sewing pressure should be adjusted to the

minimum required strength.

13. Adjustment

1) Adjustment

(I)

The alternating movement on

the walking foot and presser foot can

be adjusted by using adjusting dial

located on the top cover.

(2) Face the desired number
printed on the dial to the matching
mark located on the top cover. The
number printed on the dial represents
the possible protrusion
foot and presser foot from the throat

when the alternating movements

plate
on these are evenly set.

(3) The alternating movements

can be readjusted

2)

To

change the balance

walking foot and presser foot (Fig.ll ):

(I)

To

increase the rise

presser foot:

CD

Remove the rubber plug

of

presser foot pressure (Fig.9):

of

walking foot

of

alternating movement (FiglO):

of

the walking

up

to 2.0-6.0mm.

of

the alternating movements between the

of

the walking foot and decrease the rise

of

top cover.

Fig.9

and

presser foot:

...---------------.....,

Presser foot

~Walking

kto-5.~

Fig.IO

Dial

h

foot

of

?????

the

6

® Rotate the pulley until the presser foot

is

slightly raised from the throat plate.

@ Loosen screw

"A"

(on the right side)

@ The built-in spring pulls down the

presser foot until it makes contact with the throat

plate. Tighten the screw

@ After this adjustment, the protrusion

the presser foot has been decreased by a set
distance. And the same distance has increased
the vertical motion

( 2 ) As a contrary case (1) ,

increase the rise

Fist, rotate the pulley until the walking foot is slightly raised from the

throat plate. Next, loosen screw "A". Finally, tighten screw "A". This decreases
Lte

rise

of

of

the walking

"A".

of

the walking

presser foot as follows:

foot.

foot.

to

decrease the rise

of

3) Installing the feed

regulator

regulator bracket
positioned,

Note:

bracket

If

the

(Fig.12):

the feed

is

poorly

resultant
alternating movements may
be too short

or

long,
causing defective machine
operation.

(1) Set the clearance

of

"A"

the

between special screw
located on the regulator stud
and the side wall

arm

machine
Fig.12.

to 26.5mm as

Rubber plug

•&I;

shaft crank

Fig.

II

of

the walking foot and

Fig.l2

t

7

(2) With the feed regulator stud held as explained is step (1) above,

adjust the feed regulator bracket. This adjustment should insure a clearance
12mm between the periphery
and the top cover mounting face located on the arm. Tighten screw

4)

Feed

pitch

adjustment

The ratio

amount

feeding amount can be increased

conditions. Loosen the nut located on the upper feed rock shaft crank (left), and
shift to adjust the position

upward

Upper

position-Feed

Lower

position-

of

the upper feed amount

(of

the feed dog) has been adjusted to 1 :1. Hawe¥er, lhe . .walking.

or

downward.

pitch-Small

Feed

pitch-

of

pin

"B"

of

walking foot (Fig.13):

or

of

the pivot bracket

Large

located on the feed regulator bracket

"C".

(of

the

walking foot) to the lower feed

decreased depending

on

the operating

of

fo.ot

14.

Adjustment

Fig.l3

of

stitch length

and

Fig.l4

reverse sewing

(Fig.14):

I)

To

change the stitch length, rotate the stitch length adjusting dial.

2) Pressing the stitch length adjusting lever for reverse stitching.

15. Safety clutch device: (Fig.15,

Safety clutch device is installed to prevent the hook and cog belt from

16, 17,

18):

8

damage in case the thread is caught into the hook when the ma chine is loaded

abn

ormally durin g operation.

1) Function

(I)
the rotation
ope

ration

(2) Clean the thread thoroughly

(3) Turn the
Whether the hook shaft r
properly, place the clutch dei

of

safety clutch.

When the safety clutch acts, the

of hook

of

machine.

shaft wi

cog

belt hub by hand, and check

Fig.

IS

ll

stop.

which

otates lightly and

ce

as follows.

The arm

cog

belt pull

is

ey

will

shaft only wi

caug

ht into the hook.

Fig. l6

be

unloaded.

ll

rotate. Stop the

Then

2) How to

( I) While pressing down

left hand, turn the balance wh

fi

in the

(2)

wheel more firml

(3)
(4) As shown in the Figu re, the safety clutch device is set.

3) Force applied to

(I)
mark
proportiona

set

the

safety clutch.

the

push button on the opposite side

ee

l slowly by right hand away from you as shown

gure.

The balance wheel will stop by

y.

Relea

se

the push button.

the

safety clutch

The

force

applied

of

the eccentric pin faces th e center

ll

y increases

to the safety clutch is the smallest

as

the white mark faces the outsid

the

gear plate, but

of

the

tum

when

lower shaft.

e.

of

bed by

the

balance

the white

The

force

9

(2) To adjust

the eccentric pin.

(3) After the adjustment, make sure to fasten the set screw.

the

force slide the timing belt, loosen the set screw, and turn

Low

Shaft

Eccentric

Pin

Fig.17 Fig.

16. Adjustment

The

max. height

the surface

to

the needle plate 2 is normally

of

the height

of

the feed

I mm. To adjust this height:

I)

Lay

down

the machine head toward

tum

the

the other side, and
the feed

height
it.

dog

to

its highest position;

2)

Loosen bell

of

the

feed

3)

Tighten the screw after adjustment.

crank

dog

pulley

screw and

by

raising

17. Relative position
dog to needle plate (Fig.

I)

Set the stitch length at minimum.

2)

Tum

the

pulley

so

as

to

raise the feed

to

its highest point.

3)

Lay

down

the machine head toward the

other side, loosen

4)

Adjust the needle plate

the

screw (E); Fig.20

to

dog

so

as to raise

adj&t

or

lowering

of

the feed

20) :

the center

IS

of

the feed dog( Fig.19):

1 from

the

2

Fig.I9

dog

L-----------'

of

the needle hole

on

the feed dog.

10