I
HIGH
LEAD
GC24518-1LD/1RD/2D
I
Single
feed
needle/twin-needle
lockstitcher
with
post-bed
auto
trimmer
needle
Instruction Manual
Parts Catalog
bar
SHANGHAI
HUIGO~G
N0.3
SEWING MACHINE
FACTORY
!.Preparation
for
operation
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.
(2)
Power must be turned
off
when the machine is not in use,
or
when the operator leaves the seat.
(3) Power must be turned
adjusting the machine,
(4}
Avoid placing fingers, hairs, bars etc. near the pulley,
when the machine is in operation.
(
5)
Do
not insert fingers into the thread take-up cover, under/around the needle,
machine
(6)
If
safety devices.
2)
Precautions before
(
1)
Never operate the machine before filling the machine's oil pan.
(2) When a new sewing machine is first turned on, verify the rotational direction
the power on.
(3) Verify the voltage and phase (single
3)
Precautions for
(I)
Avoid using the machine at abnormally high temperatures (35"C
is
in operation.
a belt cover, finger guard, eye guard are insta1led, do not operate the machine without these
operating
off
when tilting the machine head, installing
or
when replacing.
starting
conditions
operation
or
three) with those given on the machine
"V"
belt, bobbin winder pulley,
or
or
removing the
higher)
"V"
belt,
or
motor
or
pulley when the
of
the pulley with
namepl~te.
or
low temperatures
(5"C
or
lower) .
(2) Avoid using the machine in dusty conditions.
4)
Specifications
Model
Max. sewing speed 2000rpm
Stitch length
Needle bar stroke 33.4mm
Presser foot
stroke
Needle
Needle gauge
Lubrication Semi-auto lubricated
Hook
Motor
By
hand
By
knee IOmm
GC24518-1LD/IRD
l.6times hook
DPXS
220V550W Servo motor
-I-
I
o-smm
7mm
(14#-18#)
I
GC24518-2D
8mm
2.Lubrication
(Fig.l,
Fig.2,
Fig.3)
I) Before starting operation, be sure to pour oil up to the position H
position
2) When a new sewing machine is first operated,
a sewing machine which left out
period
through the oilholes after removing
shown below(the derection shown in arrows). (Fig.
3) While operating
The oil
L, replenish the oil supply up to position H. (Fig.])
or
when
of
use
for a long
of
time
is
amount
operated,
the
machine,
can
be
it
will be necessary to oil
the
rubber plugs
2)
check
the condition
adjusted by oil adjustment screw.(Fig. 3)
of
oil lubrication through the oil
of
oil tank.
If
the oil below
check
window.
3.How to
Note: Before
1) Turn
2) Loosen
3)
GC245!S.ILDI
groove side (left),then insert
as it
GC2451S.2D (Fig.S)
with the long grooved (faces each other), and
insert
clamping holes.
4)
Tighten
attach
the
the
Hold the needle to
will
Hold the needles so that the two needles side
needle(Fig.4, ig.S)
attach
balance wheel by
go into the needle clamping hole.
it
as deeply as it
the
needle,
needle
clamping
GC24518-IRD
needle
clamping
be
sure
to
turn
hand
to raise the needle
screw.
(Fig.4)
its side with the long
the
needle
will
go into the needle
screw.
off
as
the
deeply
power.
bar
to
its highest position.
!eh
""''"""
s!de
0 X
X
-2-
4.How to wind
the
lower
thread
(Fig.6)
Strength
Uneven
bobbin.
Winding
insufficiently, tighten the adjusting screw.
of
winding
Particularly in the
winding
If the bobbin
amount
When
the bobbin is wound excessively, loosen the adjusting screw.
case
of
nylon
or
polyester thread, wind the bobbin loosely.
is
wound unevenly, slide the thread guide toward the less wound portion
Wonding
:nnonnl
odjusling
SCI'Oif
X
X
When
Even winding
of
80%
the
bobbin
0
I
1¥i!h
a!
full~
ammmr
is
wound
of
S.How to route
Raise the thread take-up lever to its
highest position and lead the upper thread as
shown in fig. 7
6.Setting
I) Raise flap 1 and remove the empty bobbin.
2) Insert bobbin 2
3) Pass the thread through slit 5 and below
4) Close flap 1 and pass the thread through
of
the thread is unwound from
the opposite direction to the gripper.
spring 6, pass the thread through slit 3
and pull about 3
the
upper
bobbin (Fig.8)
in
such a way that when
em
through.
thread(Fig.7)
it
6
moves in
the flap's guide 4.
-3-
7.How to ad.just the lower
Pick
up
the end
of
needle thread
thread
by
left hand and
(Fig.9)
lightly
machine one tum. When the needle thread
up,
the right figure.
8.How to
accordance with the type
the tension with screw 1.
9.Adjustment
loosen or tighten the pressure
press down the pedal
the bobbin thread
adjust
The lower-thread tension should be set
of
Tum
the
Thead Tension Nut left or right to
will
be
drawn out as shown
the lower
of
seam required. Adjust
upper
thread
of
thread
upper thread.
by
toe
to
run the
is
pulled
(Fig.lO)
(Fig.U)
11!1'etld
ternjon
in
in
mol
'
.1
lO.djusting
For ordinary stitching, the tension
··-·--
of
thread
( llghlen
~=
tension (Fig.12)
of
the upper
-4-
and
the lower threads should be equal.
12
;n.Adju•:tm.eut
of
stitch length
and
reverse sewing (Fig.13)
I) Rotate the stitch length adjusting dial to change the stitch length.
2)
Pressing the stitch length adjusting lever for reverse stitching.
3)
Reverse feeding starts when Reverse
depressed, and the machine
Reverse Feed Lever
;12.Ad.jus1ting
l)
Adjusting the thread take-up spring stroke
thread
is
released.
take-up
will
spring (Fig.14)
Feed
Lever
feed forward again if
e Thread take-up spring for left upper thread 2
Loosen the screw 5, adjusting the stopper block 4.
e Thread take-up spring for right upper thread 1
Loosen the screw 7, adjusting the stopper block 6.
2) Adjusting
• Thread take-up spring tension for left upper thread 2
the
thread
Loosen the nut 1
take-up
Oand
spring
screw 3, then adjusting
tension
is
1-
-------------
···-
SU!dt
lenglh
adJns!lns
l
0
dlnl
t-
I
R~lowr
-'l
[13
the tension screw. After adjustingment, tighten the
nut 10 and screw 3.
e Thread take-up spring tension for right upper thread1
Loosen the screw 8, adjusting the nut 9. After
adjustment, tighten screw 8.
(l3.dj1ost1ment
As shown
pressure
l4.d,iust
The position
tightness,
to
sewing materials and sewing conditions.
-·
~"
pcr.;iticn
f-=;
Moteriol
m::iglll
Supply
of
presser foot.
the
thread
and
therefore must
p
of
pressure
in
Fig.
IS, tum the pressure regulating thumb screw to increase or decrease the
of
presser foot (Fig.15):
guide
of
the thread guide affects stitch
be
asjusted according
L<:llw:lrd
"""
-~
CenlCI"
p>
Medilom
Stnnd.ml
Rlglnw:m:l
F
LiGht
~
5
-5-
15. Installation
of
Belt cover (Fig. 16)
Set the screw
illustrated. Assemble the belt guard 3 in the direction
of
the arrow, tighten it's screw. The assembling
belt guard 5
the belt guard 1 from the top
inside
of
the 3 and
4,
6 and the washer 7 on the arm as
is
the same as the belt guard
of
5,
tighten the screw2.
3,
then, insert
the pulley into the
16. Driving knife adjustment(Fig. 17)
In
resting position the rear edge
driving knife should be flush with the front edge
of
the counter-knife.
The fixed knife should
The pivoting driving knife should abut on the fixed knife after approx.
The driving knife must not collide with the bobbin case.
The clearance between the lower blade edge
inner rotary hook
b should be
abut
on
0.3~0.4mm.
of
the
the thread pulling knife along its total width.
of
the
'
•
---
1/3
of
its width.
of
the driving knife a and the lower surface
- _ji6
of
the
Checlring:
Loosen two screws 1
for adjusting the resting
position
knife
according to the standard,
then tighten screws
Attention:
must
17. Adjusting
Checking:
stitches at the seam beginning.
of
the driving
2 and adjust the knife
1.
Check the
be
easily movable and the axial clearance as low as possible.
The clamping spring 5 has the function to hold the cut bobbin thread
Fixed knife 4 and driving knife 6 must be
ax.ial
the
fixed knife position
clearance
of
the knife shaft when tightening the screws
and
hohhin
in
parallel positiOn standing under a slight cutting
thread
1.
The driving knife
clamping(Fig. 18).
in
order to avoid skipped
pressure.
-6-
Parallel position correction
Loosen screw 3 slightly for adjusting the
counter-knife 4, then change counter-knife 4
thread pulling knife and counter-knife are
in
parallel position
by
setting the screws 2
parallel position. Tighten screw 3 at last.
of
thread pulling knife 6 and
in
such a way that the edges
Cutting pressure adjustment
The knives should guarantee a safe cut at the lowest possible pressure
the thread
thread pulling knife with a knife overlapping
last, tighten screws
pulling knife. This
Loosen screws 1, then tum counter-knife support in such a way that the condition is fulfilled, at
1.
is
nonnally the case when the edge
of
l/3.
of
of
the counter-knife against
the counter-lmife just touches the
of
1)
Rotate the balance wheel
2) While keeping the DOWN position, press the cam follower crank
cam
groove.
3)
Adjust the trimmer cam so that the movable knife starts moving when the balance wheel is turned
hand and the green mark point on the balance wheel meets the black point on the arm.
To
adjust, loosen two trimmer cam screws
to
lower the needle to the DOWN position .
A.
to
enter the roller into the trimmer
19
by
-7-
A.ARIVI
BED AND
3~
ITS
ACCESSORIES
2
..
22
(11)
-8-
A.AR\VI
BED
AND
ITS ACCESSORIES
Part
No.
Description
complete
0
~
-
~
' '
~
-
..
N
3
1
5
2
1
1
1
1
2
9
1
1
1
1
1
2
1
1
2
2
1
1
2
1
1
1
2
1
2
1
1
4
2
iii
-
~
-
~
N
3
1
5
2
1
1
1
1
2
9
1
0
'i'
~
~
-
..
N
3
1
5
2
1
1
1
1
2
9
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
2
2
2
2
1
1
1
2
2
1
1
1
1
1
1
1
2
2
1
1
2
2
1
1
1
1
1
4
4
2
2
Remarks
(28)
'Xl2.1
(40)
(40)
(40)
(40)
(40)
(40)
X4.
X9
X8
X7
5
XlO
X6.5
-9-
I
I
I
'
B.
THREAD
1 2 3 4 5 6 7 8 9
TENSION REGULATOR
10
11
12
13
.lb
MECHANISM
17
18
14
16
19
20
21
22
I
30
31
32 34
-10-
THREAD
TENSION
REGULATOR
MECHANISM
Part
No.
Description
spring
c\uct
tension stud
tension stud
uut
guide
tension stud
tension disc
nut revolution stopper
uut
tension stud
complete
take-up spring
Q
fi!
~
- -
ro ro
' '
~
~
-
-
~ ~
~
~
2 2 2
1 1 1
1 1
1 1 1
1 1
1 1 1
1
1 1
2 2
1
1
1 1
2 2 2
1 1
2
2
2 2
1 1
1 1 2
1 1 1
1 1 1
2
2
1 1 2
1 1 2
1
1
1 1 1
1 1 1
1
1
1
1
1
1
1 1 1
1 1
1 1
1
Q
~
ro
~
-
~
~
2
2
1
3
4
2
1
4
2
2
'
1
1
1
1
1
1
1
1
1
1
1
(40)
(28)
(40)
(40)
(40)
(40)
(40)
(40)
(40)
(40)
(40)
(40)
(40)
Remarks
X3
X 12. 1
XB
X3
Xl4
Xl4
X6_
X23
X6.5
X7
X64
X24
X22
-11-
B.
THREAD
TENSION
REGULATOR
MECHANISM
Fig.
No.
Part
No.
spring
complete
Description
0 0
~
~
-
-
ro ro
' '
~
~
-
-
..
..
N N
1 1
1 1
0
N
ro
'
~
-
..
N
1
1
2
1
1
1
1
1
Remarks
(40)
(40_)
(40)
X3.
X6
X4.
5
5
-12-
C.PRESSER FOOT MECHANISM
13
10
9
8
7
6""'-
.,
5~
4---'!"1
3-
R
2-l
1----\P
47 48 49
~
22
41
45~
46
50
51
52
.....
..-->
42
43
~_b
"'
54
53
"-._
1
~
(31) (6)
-13-