Highlead GC0618-1, GC0618-1-SC, GC0618-1-D2, GC0518-1 User Manual
Purchasing
Copy
Dept
HIGH
LEAD
GC0618-1/-SC/-D2/GC0518-1
Heavy Duty Compound Feed Lockstitch Sewing Machine
Instruction
Parts
SHANGHAI
HUIGONG
N0.3
Catalog
SEWING
Manual
MACHINE
FACTORY
1.
PRECAUTIONS
2.
MAlN SPECIFICATIONS
3.
PREPARATION AND LUBRICATION ..
4.
REPLACE
5.
WINDING
6.
WINDING
7.
REMOVING AND INSERTING
8.
THREADING........ . .......................
9.
REGULATING THE
10 ADJUSTMENT OF
ll.
ADJUSTING THE
12. STITCH LENGTH
13.
ADJUSTING
14.
RELATIVE POSITION OF THE FEED
15
THE POSITION OF
16.
TIMING THE
17
ADJUSTING THE
18. TIMING
19.
ADJUSTING THE
BETWEEN
BEFORE
NEEDLES
...
..
ADJUSTMENT
THREAD
THE
LIFT
ADJUSTMENTS
THE
HEIGHT
THE
NEEDLE
HEIGHT
THE
HEIGHT
STARTING OPERATION
................
......
PRESSURE
OF THE ALTERNATING
OF
NEEDLE
WITH FEED
OF THE
HOOK
OF THE
20. TIMING OF THE VIBRATING
21
ADJUSTMENT OF THE
CLEARANCE
COLLAR
22. ADJUSTING THE
23. ADJUSTMENT OF
24. ADJUSTMENT OF KNIFE
THREAD
NEEDLE
CONTROLLER
BAR STOP POSITION
ENGAGEMENT
CONTENTS
.
.
THE
BOBBIN
TENSIONS
ON
AND
THE
FEED
DOG
AND
THE
DOG
NEEDLE
AND
THE
PRESSER
PRESSER
BETWEEN
................
..................
.
.....
.
THE
MATERIAL.
PRESSER
REVERSING
DOG
....
TO
NEEDLE
NEEDLE
.......................
BAR
.....
NEEDLE
FEET
FOOT
..
FEED FORKED
SPRING
...
.
.
.
.............
FEET
LEVER
..
...........................
PLATE ... 7
HOLE OF THE
FEED
DOG
.....................
.
.....................
............................
CONNECTION
.....
.
AND FEED FORK
.
......................
..........
.
............
.
.
.....
.
.......
.
......
.
.....
.
........
.
........
.......
.
........
.....
. .. 6
. ... 7
.
...
.
2
2
.
.3
3
.4
.4
..4
5
5
. .6
6
. .6
8
..
10
7
8
8
9
9
9
9
~I~
1.
PRECAUTIONS
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 balance wheel.
Power must
(2)
be
turned
BEFORE
off
when the machine
STARTING
is
not in use, or when the operator leaves the seat.
OPERATION
( 3) Power must
be
turned
off
when tilting the machine head, installing
or
removing the
"V"
belt, adjusting
the machine, or when replacing.
(4) Avoid placing fingers, hairs, bars etc., near the balance wheel,
"V"
belt,
bobbin
winder balance wheel,
or motor when the machine is in operation
(5) Do not insert fingers into the thread take-up cover, under/around the needle, or balance wheel when the
is
machine
(6)
If
a belt cover, finger guard, eye guard are installed, do not operate the machine without these safety
in operation.
devices.
2) Precautions before Starting Operation:
(I)
If
the machine's oil pan has an oil sump, never operate the machine before filling
(2)
If
the machine is lubricated by a drop oiler, never operate the machine before lubricating.
(3) When a new sewing machine is first turned on, verify the rotational direction
po\ver on. (The balance wheel should rotate counter-clockwise when viewed from the balance
the
it.
ofthe
balance wheel with
wheel)
(4)
Verify the voltage and (single or three) phase with those given
on
the machine nameplate.
3) Precautions for Operating Conditions:
(1) Avoid using the machine at abnormally high temperature (
J
lower
(2)
Avoid using the machine
2. MAIN
SPECIFICATIONS
Item
Max. Sewing Speed L000 rpm
f----------''---'-----t-------------------------------·-·-··-··
f---------=----t--------------------------------------------
1 Take-up Lever Stroke
t-------------+-------------------------·------------
Stitch Length 0 I 0
in
dusty conditions
r;coo
1
1-1
1 J
r;r
:oo
1
1-1
1
sr:
J
Needle Bar Stroke
t-H--'~:.c.~gh:.::dc..::~:...:~:...:~:._~:..c~c_;~c::.~vs:...:ee:.::~....:1F-'~=-=oac...:.ti_n-+---------L-:J-III_m
Presser foot
lift By Knee
f--------__[__--=----t------------~----=---------------·
Rotating Hook
Lubrication
By
Hand H
t---=------+----------------:-;-----------------
Needle
Motor
Double Capacity Hook
370W Clutch Motor
I Large Hook
I
3S"C
or
r;r:oo
11-1
111111
71.
;,
111111
:l::J
111111
_________
111111
l~111111
Ill'~
17
LL;::
for
Manual
Speed adj. Motor
higher)
1
IlL
L~;::
Trimmer
or low temperature (
S"C
l
-------·
------
-------·.
---------
l_l__-
___
-~~----~=---~--~-~~
·-----··-·
-·--·--
~-Do~;blc
1 370W Clutch Motor
C'~l]~;~~J~lo()_<
-----
-·
-·-
-----
or
---
--
-2-
3.
PREPARATION AND LUBRICATION
1)
Cleaning the machine
Before leaving the factory, the machine parts are coated with rust-preventive grease, which may be
hardened and contaminated by dust during storage and shipment. This grease must be removed
gasoline.
2) Examination
Though every machine is confirmed by strict inspection and test before leaving the factory, the
machine parts may be loose or deformed after long distance transportation with jolt. A thorough
exammation must be performed after cleaning the machine. Turn the balance wheel to sec
running obstmction, parts collision, uneven resistance or abnormal noise.
made accordingly before nm-in operation.
If
these exist, adjustment niust
3) Oiling (Fig.l, 2, 3, 4)
if
vvith
there
is
be
Please
positions.
Caution: Please use white spindle oil.
do
not operate the machine before lubricating well. The points
Fig.l
with
arrO\v
in the fig are oil
Fig.3
F
~~"'""''"'
~
4
3
Decrease
,,,.
1~\
lncrea.s.e
Fig.2
Lubrication
Add the oil from the oil hole 1 1llitl to the position
Adjusting the lubrication (Fig.4)
Oil aqjusting screw 3 can aqjust the lubrication
to
increase oil and tum oil-adjusting screw 3 cmmter-clockwise to decrease oil.
4.
REPLACE NEEDLES (Fig.5)
1)
Tum the balance wheel to lift needle bar 1 to the upper end
of
rotating hook (Fig.4)
2.
of
the rotating hook:
of
its stroke.
3
Fig.4
Tum
oil-adjusting screw 3 clockwise
2)
Loosen needle clamp screw
of
groove
bottom
5.
go.
below
and
and stop after the bobbin
6.
shape, loosen set
bracket left ward or rightward. After adequately positioning the
bracket, tighten set screw
mil
adjusting sere\\
the needle leftward fully insert the needle shank up to the
of
the needle socket.
Caution: The direction
J)
Then tighten needle clamp screw
WINDING
l)
Put the bobbin J on the bobbin winder shaft
2) Bring the thread forward toward the boobin and wind from
in
clockwise direction several times around the bobbin.
4) Push the lever 4 toward other side so that the winding wheel
··v··
belt will engage and then start the machine
5) The v\inding \\heel
WINDING
I)
When the \vound thread layer does not present a cylindrical
2)
Do
not overfill the bobbin The optimum length
fill
about
J)
Adjustmg
(Fig.6)
ADJlJST~1ENT
screvv 5 of
80'%
()of bobbin winder stop latch
of
the winding tension: The winding tension can
of
the long groove should be left.
vvill
is
filled with thread.
bobbin winder tension bracket and slide
5.
of
bobbin capacity This can
2.
While keeping the long
2.
as
far
automatically be free from
(Fig.6)
be
adjusted by
as
"V"
of
it will
belt
thread
be
adjusted
by
tension screw 7
FigS
Fig.o
7.
RE!\10VING
I)
Turn the balance wheel to lift needle bar I
the upper end
in
side
the slide plate
hinged latch with left thumb and index finger And
pull bobbin case and bobbin from rotary
the latch
the boobin case. Release
the open side of the bobbin case downward will
cause the bobbin
of
(Fig
Its
2)
3) Hold the bobbin bet
thread Holding the bobbin case
7)
-n
the left. under tension spring l (Fig
or
the case \\hen
of
travel turnmg the balance wheeL and open
A (Fig
Open
on
is
held open. the bobbin will be retained
\Vith
the
AND
its
stroke Place the feed dog
I)
the drip pan, and then open the
to
drop out.
right hand
it
is
tumcd with the open side
INSERTING
hook. While
of
the latch and tuming
vvcen
the thumb and forefinger of your right hand and pull out a length
in
your left hand turn the open side
gwde
the thread into the slot
7)
and into the dciiVef) eve.
at
THE
to
this
In
of
do\\11.
BOBBIN
L__
__________________
up
and place the threaded bobbin lllto
Ill
the edge
alwavs keep the hinged latch
or
the bobbin case. Then pull the thread
In
order
to
keep the bobbin
2
at
!'rom
the front
Fig7
_
or
about 5
dropping out
or
the
bobbin
em
It
to
--
4
--
case open.
5) Take the tlu·eaded bobbin case
Release latch and press
can be heard.
before starting to sew.
8.
THREADING
l)
thread from the thread stand the
thread stand lead the thread from
lower guide hole in pin 1 on top
again from right to left
pin.
Pass thread in weaving fashion through the three holes
in guide
tension disc
to left beneath and around thread controller
pull thread upward against the pressure
into the fork
and from right to left through the eye in take-up lever
I 0,
ll
2)
\our
right hand so that bobbin thread may be picked up by needle thread.
through under the presser foot for starting operation.
Permit about 5
Raise the needle bar
2, and from right
3.
Now
5, in the thread controller. Guide upward through the point
and from left to right through the eye
.ASter
the above threading, hold the end
bobbin
case on to center stud until the latch catches
em
of
(Fig.8)
to
its highest point and lead the
tlu·ough the upper guide hole in this
to
left over and
pull thread downward and from right
by
the latch and place it on the
bobbin
follovving order. From the
back
of
thread
to
to front through the
the machine
of
am1,
between
4, continue to
the wire spring Fig.8
of
the needle 12.
of
thread with your left hand.
hand down freely. Be sure
then
the
8,
down through thread
center
the
10
of
controller
And
stud
of
the bobbin case holder.
undercut
to
guide
and
thereon with a click that
push
the slide plate to the right
discs 6, and thread guide
7, again and then through 9,
tum
the balance wheel with
put
their ends
of
thread back
7,
9.
REGULATING
For ordinary stitching, the tension
threads
imperfect stitching will be the result.
will lie straight along the upper surface
thot
in
while tuming it to counter-clockwise to decrease it.
the outside
counter-clockwise to decrease it.
in
the center
on
the upper thread_ the lO\\er thread will lie straight along the underside
I) Tension
Before
lifted position. To adjust tension, turn serrated nut
2) Tension
The 10\\er (bobbin) threod tension
of
the upper (needle) thread:
ad_i
usting the tension
of
the lower (bobbin) threod (Fig 7)
or
the bobbin case. Turning this screw to clockwise to increase the
THE
of
the material. (J Fig. 9)
THREAD
of
If
the tension on the upper thread is
of
of
the upper (needle) thread, be certain that
is
the upper and the lower threads
the material. (2 Fig.9)
controlled
2
~
1 Upper
j
We
II
ba I
ance
or
thread
I ower
strong
thread
weak
TENSIONS
If
the tension on either
If
(A
Fig.
S)
on tension
hy
the larger screw
3
Upper
lower
thread
thread
thread
greater
the tension
of
device
(2
weak
strong
Fig.9
should
is
than
on
the
the
the
presser
to
Fig.
7)
thread
or
be equal so as to lock both
stronger than on the other,
that on the lower thread, it
lower
thread
is
greater than
material.
clockwise
neor"thc
(3
Fig.9)
foot
is
let down but not
to increase tension,
end
of
the spring at
tension. while turning it to
-5-
10.
ADJUSTl\1ENT
OF
THE
PRESSURE ON
THE
MATERIAL
The pressure
pressure, tum the
11.
ADJUSTING
of
the presser feet is adjusted by the screw D (Fig.2) with screwdriver. To increase the
scre"v to clockwise and to cmmter-clockwise to decrease it.
THE
LIFT
OF THE ALTERNATING PRESSER
(Fig. I 0)
The thickness
of
the lift
just
height
llllk and stud assembly along the slot-move up
feeding presser foot and
Tighten
some
foot (B Fig.5) or vice versa, see the
12.
of
enough for clearance
1) With normal adjustment
To later lift,
\Ving
materials may require unequal heigh
2) When altering the lift
STITCH
of
the material should control the height
the alternating presser feet.
of
the material.
both
loosen
nut upon completion
LENGTH
the
push
of
wing
nut
down
of
adjustment. However, Fig.l 0
the
lifting presser foot
instructions"
ADJUSTMENTS
The
feed lift to equal
A and
to
lower
of
lift.
lift should
move
to
raise the
this foot.
ADJUSTING
be
the
(A
Fig.5) tmequally against
THE
HEIGHT
OF
that
THE
of
the vibrating
PRESSER
FEET
presser
FEET"
AND
Numeric figures
The desired numeric figure
above, while depressing the reversing lever 1 slightly.
13.
REVERSING
Stitch length
on
can
the
ADJUSTING
LEVER
be
set
by
dial show the stitch length
on
the
THE
(Fig.ll)
turning the detail
dial should
be
HEIGHT
set
THE FEED DOG (Fig.l2)
The
maximum
from the surface
normally l mm.
l)
Lay
down
side, and turn the balance wheel so as
dog to it highest point.
2) Loosen bell
height
of
the feed dog
3) Securely tighten the
adjustment.
height
of
the
crank
of
the
feed
dog
the
needle
machine
screw F (Fig.4) and adjust the
by
raising
head
or
screw
plate
toward
to
lowering it.
upon
(1
Fig.l2)
(2
Fig.l2)
the
raise
the
completion
in
mm.
at
just
OF
is
other
feed
of
2.
2 Need I e
1 Feed dog
lmm
pI
ate
Fig.ll
Fig.l2
-6-
14. RELATIVE POSITION
OF
THE FEED DOG
(Fig.13)
1)
Set the stitch length
2) Tum the balance wheel so as to
highest point.
3) Lay down the machine head toward the other side and
screvv
loosen the
4) Adjust to be 32.1 mm from the edge
to
the center
5) Securely tighten the screw.
15.
THE POSITION OF
5 (Fig.4)
of
the needle hole on the feed dog. (Fig.l3)
at
minimum.
raise the feed dog to its
of
the needle plate
THE
NEEDLE AND
TO
NEEDLE PLATE
Figl3
THE NEEDLE
Turning the balance wheel to lower slowly the needle bar,
check whether the needle descends to the center
of
the feeder or
one)
1)
Remove the cover G (Fig.2) and loosen the screw 1
(Fig 14) slightly.
2)
Holding the bottom
move
it
as
may be required to get the correct position to the feed
dog.
3) Tighten the
16. TIMING THE
HOLE OF THE FEED DOG
of
the needle hole
not
(Please check again the needle
of
the needle
screw and close the cover.
NEEDLE
bar
rock frame H (Fig 3),
WITH FEED
is
perfect
DOG (Fig.15, Fig.16)
It
is
important that the timing relationship between the
needle on its downwoard stroke and the feed dog movement is
maintained at all times. When the
downward stroke reaches the top surface
dog movement must start. When adjustment is required, usc the
following procedure to change the position
l)
Loosen the screw l for cover plate 2 and then remove the
cover plate
ditch 5
lowest point.
needle and the feed dog rest. After positioning completed, tighten the each screw securely
2.
2) Normally put the arrow mark 7
of
arm shaft. Then tighten the cam
3) Tum the balance wheel to the needle at l mm up from its
Pushing the stitch length regulating lever up and down, turen the cam 6 and set this at the point both the
4)
scarf
of
the needle on the
of
the feed dog, the feed
of
cam
of
the cam 6 on the V
screw
87
Figl4
Fig.l5
5
Fig.l(J
-7-
17. ADJUSTING
THE
HEIGHT
OF
THE
NEEDLE
BAR
(Fig.17)
When the needle bar is at its highest point, normally
of
plate and the upper end
You
can also adjust this at its lmvest point. In this case, normally the
the needle plate and the
or
low·er the needle
NOTE: These
BETWEEN
18.
TIMING
After setting the needle barheight, set stitch length to
needle bar reaches its lowest point.
upward stroke. With needle
needle, and normally, the
2.4
111111,
the hook point
se\\ ing hook
2)
the hook to the right
hook
THE
HOOK
BETWEEN
further the clearance between the hook point and the needle hollow should
1)
If the sewing hook
"ith
To
adjust the clearance
shari
Therefore, keep the screw on V ditch during adjustment. Re-tighten the acrc\vs.
the needle eye
upper
end
bar
as may
measurements
the
or
be
AND
THE
bar
measurement
should
center
to
the
left as may require Please note one
of
between
is
22.3
of
the needle eye is
required. Then, tighten the screw upon completion
are approximate standard, accordingly, following final adjustments
NEEDLE''
THE
Continue
in this position, the point
not
the needle. Re-tighten the three set screws and re-check the timing
HOOK AND THE
turning and allow the
benveen the hook point and the
be
timed correctly, loosen the three set screws. Turn the
the hook point and the needle hollow, loosen the
the
mm.
11
mm. To adjust this, loosen the
are recmmnended.
minimum,
of
measurement
NEEDLE
tum
the balance wheel to\vard you until the
the
needle
se\\ing
of
the
bar
upper
t\vO
between
measurement
the
of
adjustment.
(Fig.18, Fig.l9)
to raise about 2
hook
should
end
of
the needle eye should
be
about
screws
is
surface
between the surface
screw
be
0.05
two
placed on the V ditch
of
the needle
J (Fig.3) and raise
"TIMING
mm
while
on
at the center
to
0.1
hook
screws and move
of
mm.
shaft to align
of
of
its
the
be
the
of
Fig l
C)
·19.
ADJUSTING
Figl7
THE
Fig.! X
HEIGHT OF THE
PRESSER FEET (Fig.20)
l)
Adj
ustmcnt by the presser
suffiCiently, raise the presser
Mm
e the lifting presser foot up or down as may be required so as to
get the correct height and tighten the screws.
2) Adjusting the lift
the lifhng presser foot changes. the momentums
nbrating
foot must be adjusted To a4just this, 10\ver the presser bar lilicr, holding the vibrating presser foot B (Fig.()) and
loosen the hexagon screw 3 and move the presser foot up or
tighten the sere\\
presser foot vary. thus the height
of
altcmating
bar
lifter Loosen the screw l
bar
lifter and lassen the set screw 2
presser f'cct
of
lf
the height
of
the l1fting and
the vibrating presser
--
8
--
dovvn
of
Fig 20
as
nwy he required. After setting the position.
20. TIJ\1ING OF THE VIBRATING PRESSER FOOT
This is the normal
, ibrating presser foot
the
vibrating presser foot
that the vibrating presser
irregular stitches.
(Fig 20) and adjust the rotating
screws
21. ADJUSTJ\1ENT
CONNECTION
lnconect
stitch length
To tnerease the clearance, loosen the
should be done with
adjustment, tighten the
clearance
or
overheating, etc. To
22.ADJUSTING
Normally. the thread
thread until the needle reaches to the goods, and
the needle and passing
l)
For more
the stop to the right
2)
To
adjust the
Turn the tension stud G slightly to the left to strengthen the tension (to lighten
tension. turn to the right)
completion
of
adjustment
23.ADJUSTMENT
timing
should
should
foot
To
adjust
AND
between
tuming
screw
THE
of
the
controller
(For
less action,
tension
when
tum
the
balance
reach
the reed
leave the feed dog after the
must
this, set the lift
position
OF
FEED
the fork 8
adjust
the
balance
which
is loosened to touch the feed fork.
dog
tightly
of
hold
of
the
THE CLEARANCE
FORK
of
this,
screw
and turn the scrcvv to left or
wheel
THREAD
controller
upper
action
spring:
\\ith a scre\\dri\er.
OF
spring I should hold slack
thread through the bobbin case.
on
the
thread:
move
to the left). Tighten the screw.
Loosen
the serrated nut 4 and the
NEEDLE BAR STOP POSITION
wheel
toward
earlier than the
the
goods
the alternating
cam
5 (Fig.20) faster
COLLAR
feed forked
open
the
toward
needle
while
connection
cover
plate.
you
needle
eye
the
presser
(Fig.15,
to
CONTROLLER
it
should pause
Loosen
Tighten the sere\\ and nut
the
stop
while
screw
you, after
eye
comes
has left
needle
feet to
or
slower as
BETWEEN
and feed
Remove
get
correct
SPRING
of
the
upper
raising
2.
move
screw
lowering
the
is
passing
equal,
may
to,
feeder
the
presser
and
when
This is due the
the
loosen
be
desired, and tighten the
FEED FORKED
Fig.l6)
fork
collar
9 will bring irregular
the
coyer
plate
and
counter-clockwise.
clearance.
Upon
(Fig.21)
of
5.
the
upon
bar
lifter, the
the needle raises,
reason
goods
for aYoiding
the
two
screws 4
the oil reservoir.
This adjustment
completion
3 2
Fio.2]
of
(Fig. 22, 23)
l)
Adjusting
When the pedal is
machme
larger than 3 nun adjust as follows:
stops at --up·' position.
(I)
Disconnect the
the machine
(2) Run the machine and stop at
(:I) While
..
of"
holding
adJusting
Up" position
kicked
plug ( 12
head
the
toor'
in the hole A, then remove the tool.
down
lf
the marks deviate
pins)
''UP
balance
wheel
by heel, the
of
cable
..
position
insert the
from
Pully
-9-
Adjusting
tool
Fig.22
2) Adjusting
of
Set the machine stops at
When the pedal
machine stops as
is
"DOWN"
deviate larger than 3
(I)
Disconnect the
"DOWN~~
position
"DOWN"
kicked
down
position.
mm
adjust as follows:
plug
(12 pins)
position.
by
helL the
If
the marks
of
cable
3rd mark
\ Rotating
\ direction
\
1st mark
from the machine
(2)
Run the
machine
position.
(3) While holding the
"adjusting tool" in the hole B, then
the
head
and stop at
balance
"DOWN"
Fig.23
wheel insert
remove the tool.
3)
Confirm the stop operation then the plug (12 pins) coming from the machine head into
the receptacle.
24. ADJUSTMENT OF KNIFE ENGAGEMENT (Fig.24)
I)
Position
See the illustration
needle center are 7 5
(left) and fixed blade respectively
2) Adjustment
With the
rotates the thread
knife (left). When the movable knife (left) has
farthest distance. the
5-2.0
I
nnn
3) Adjustment
If
a thread
slightly increase the
problem
Loosen lock nut
of
movable knife (left) and fixed blade:
The
standard
nm1
and 7
nun
of
knife engagement:
solenoid
is
activated, turn
trinuning
of
knife engaging pressure
poorly
engaging
cam
standard
engagement
cut, particularly
pressure. This should solve the
which
The engaging pressure can
B and adjust it
by
using adjusting screw A
distances from the
from the movable knife
on
the machine. This
rotates the movable
moved
of
the
when
be
adjusted in this way:
to
blade
it is thick,
its
is
Movable
knife(leftl7
Movable
n
Fixed
.5rnm~
7
r-
(left)
---l--:--· /
mm
"...,_
knife
b I a
1
B A
//
de
-10-
Movable
knife
""'
Fixed
(left)
3mm
b I
ade
Fig.24
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