HIGHLEAD GG0068-1 User manual

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HIGH LEAD
GG0068-1
High-Speed,l-Needle,Lockstitch, Zigzag Stitching Machine
Instruction Manual
Parts Catalog
SHANGHAI HUIGONG N0.3 SEWING MACHINE FACTORY
From the library of: Superior Sewing Machine & Supply LLC

From the library of: Superior Sewing Machine & Supply LLC

CONTENTS
CONTENTS
...................................................................................................................... !
1, PRECAUTIONS BEFORESTARTING OPERATION ..... , ....................................................... 2
2, MAIN SPECIFICATIONS ...............................•....•..•..•..........•....•...................................... 2
3, PREPARATION AND LUBRICATION .....................•.........................•.....................•...•.•.... 2
4, REPLACE NEEDLES.....................................................................................................................................3
5, WINDING THE BOBBIN THREAD.............................................................................................................3
6, THREADING THE MACHINE HEAD ...........................••...........•...•....•......................................................4
7, ADJUSTING THE STITCH LENGTH..................•.......•...••.•.••......•.................................................•...........5
8, ADJUSTING THE HEIGHT OF THE PRESSER .••.••.•.••••••••••..••.•.•........................•...................................5
9, ADJUSTING THE PRESSURE OFTHE PRESSER FOOT ...................................................... 5
10, ADJUSTING THE THREAD TENSION ............................................................................................5
11, ADJUSTING THE BOBBIN THREAD TENSION ................................................................ 6
12, ADJUAT THE ZIGZAG WIDTH ................................................................................................................6
13, ADJUSTING THE DENSER STITCHING ..............................................................................................7
14, ATTACHING I REMOVING THE HOOK ......................................•.....•.........•........................................7
15, ADJUST THE POSITION OF FEED DOG ..............................................................................................7
16, ADJUSTING HEIGHT OF THE NEEDLE BAR .....................................................................................8
17, ADJUSTING THE NEEDLE TO HOOK TIMING AND THE NEEDLE GUARD ..............................8
18, ADJUSTING THE AMOUNT OF OIL IN THE HOOK............................................................................8
19, CHANGEOVER OF STANDARD ZIGZAG ............................................................................................9
20, PLACING ABOBBIN INTO THE BOBBIN CASE...................................................................................9
PARTS CATALOG
........................................................................................................... lO
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From the library of: Superior Sewing Machine & Supply LLC

From the library of: Superior Sewing Machine & Supply LLC

1. PRECAUTIONS BEFORE STARTING 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 balance wheel.
(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 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
machine
is in operation.
(6) If a belt cover, finger guard, eye guard are installed, do not operate the machine without these safety
devices.
2) Precautions before Starting Operation:
( l) If the machine's oil pan has an oil sump, never operate the machine before filling it.
(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
of the balance wheel with
the power on. (The balance wheel should rotate counter-clockwise when viewed from the balance 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 ( 35 ·c or higher) or low temperature (5 ·c or
lower) .
(2) Avoid using the machine in dusty conditions.
2. MAIN SPECIFICATIONS
~
2-step 4-step
s
Max.sewing speed
4500rpm
Feed pitch 2.5mm
2mm
Zigzag width 5mm IOmm CStandard 8 mm)
By hand 5.5mm
Presser By knee IOmm
Needle DPX5
9#-14#
Rotating hook Auto lubricated hook
Lubrication Auto lubricated
Motor 370W clutch motor
3. PREPARATION AND LUBRICATION
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From the library of: Superior Sewing Machine & Supply LLC

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 with 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 examination must be performed
after cleaning the machine. Turn the balance
wheel to see if there is running obstruction,
parts collision, uneven resistance or abnormal
noise. If these exist, adjustment must be made
accordingly before run-in operation.
3) Oiling (Fig.l)
(I) Required amount of oil
Line (A) on the oil reservoir: Max. Oil level
Line (B) on the oil reservoir: Min. Oil level
If oil level goes down under line B, oil cannot be
distributed to each part
of the machine, thus causing the
parts a seizure.
(2) Replenishing
Always use only No.
18 special machine oil
for high speed sewing. Be sure to replenish oil to
line A before starting operation.
(3) Replacing oil
To replace oil, remove screw (C) to drain oil.
After completely draining
off oil, clean the oil
reservoir and securely tighten screw (C), then fill
the reservoir with fresh oil.
4. REPLACE NEEDLES (Fig.2)
Tum the handwheel by hand to raise the
needle bar
to the highest pointo Loosen the needle
clamp screw
(1), hold the needle @ so that the
long groove B on the needle
is facing exactly
toward you" Insert the needle deep into the hole
of
the needle har in the direction of the arrow until it
will go
no further" Securely tighten the screw CDo
5, WINDING THE BOBBIN THREAD (Fig.3, 4)
- 3 --
2
.t
I
!
A B
3
From the library of: Superior Sewing Machine & Supply LLC

1) Insert the bobbin deep into the bobbin winder spindle ® until will go no furthero
2) Pass the bobbin thread pulled out from the spool
rested on the right side
of the thread stand following the
order
as shown in the figure on the lefto Then, wind the
end
of the bobbin thread on the bobbin several timeso
3 ) Press the bobbin winder trip latch ® in the
direction
of A and start the sewing machineo The bobbin
rotates in the direction of C and the bobbin thread is
wound up o The bobbin winder spindle ® will
automatically stop
as soon as the winding is finishedo
4) Remove the bobbin and cut the bobbin thread with
the thread cut retainer
®o
5) To adjust the winding amount of the bobbin thread,
loosen the setscrew
(J) and move the bobbin winder trip
latch ® to the direction A
or Bo Then, tighten the
setscrewo
To the direction A: Decrease; To the direction B : Increaseo
4
6) In case that the bobbin thread is not wound evenly on the bobbin , loosen the nut @ and turn the bobbin
thread tension to adjust the height of the thread tension disk ®o
It is the standard that the center of the bobbin is as high as the center of the thread tension disko
Move the position
of the thread tension disk ® to the direction A as shown in the figure on the left when the
winding amount
of the bobbin thread on the lower part of the bobbin is excessive and to the direction B as
shown in the figure on the left when the winding amount of the bobbin thread on the upper part of the bobbin is
excessiveo After the
adju~tment, .tighten the cut ®o
6-. THREADINGTHEMACHINEHEAD (Fig. 5)
Turn the handwheel by hand to raise the needle tq the highest pointe Pass the thread in the order of the
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From the library of: Superior Sewing Machine & Supply LLC

numbers as illustratedo
7 , ADJUSTING THE STITCH
LENGTH (Fig.
6)
I) Adjusting the stitch , turn the stitch
length dial A in the direction
of the arrow so that
the number corresponding to the desired stitch
length meets the marker dot B engraved on the
machine armo (Nimber on the stitch length dial
are calibrated in
"mm "o )
2) To perform reverse feed stitching, press
down the feed lever C o
The sewing machine
performs reverse feed stitching as long as you keep the feed lever
held pressedo The feed lever will return to its home position and
the sewing machine will run in the normal stitching direction
when you release the feed levero
8, ADJUSTING THE HEIGHT OF THE
PRESSER (Fig. 7)
To change the height of the presser bar or the inclination of
the presser foot, loosen the presser bar connection screw CD and
perform the adjustment properlyo After the adjustment, securely
tighten the screwo
9, ADJUSTING THE PRESSURE OF THE
PRESSER FOOT (Fig.S)
Pressure of presser foot is to be adjusted in accordance with
thickness
of materials to be sewn.o First loosen lock nut I , turn the
presser spring regulator 2 clockwise A to increase the pressure given
by the presser foot; turn the presser spring regulator counterclockwise
B
to decrease ito Then tighten lock nut 1o
The pressure
of presser foot is recommended to be less as long as
normal feeding
is ensured.
10, ADJUSTING THE THREAD TENSION
(Fig.9, 10)
1) Adjusting the needle thread tension (Fig.9)
Adjust the needle thread tension using the tension nut 4o Turning
the tension nat clockwise increases the needle thread tension , or
coJmterc!ockwise decreases ita
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6
0
A
(l'------J
7
8
9
From the library of: Superior Sewing Machine & Supply LLC

10
2) Adjusting the thread take-up spring (Fig.lO)
To change the tension of the thread take-up spring, firmly tighten the
screw A which fastens the tension post socket to the machine arm and
insert the blade
of a screwdriver into the slot in the tension post B to
adjust the tension
of the thread take-up springo
3) Adjusting the thread take-up spring stroke (Fig. 10)
Loosen the clamping screw A of the tension post socket and turn the
3
tension post socket Co 2--~
Adjustable range of the amount of thread taken by the thread
take-up spring.. 00 •• 6 to 10 mmo
11,. ADJUSTING THE BOBBIN
THREAD TENSION (Fig.11)
The tension of the bobbin thread is
aJjusted by turning the tension adjusting
screw Ao
Turn it clockwise to increaseo
Turn it counterclockwise to decreaseo
It is common practice to test the bobbin
( • ·>
( ..
test the bobbin thread ten~ion as shown in (-.=•.....;:•:..---J
Fig.! I. Hold the end of the thread from
delivery eye. If the
bobbin case is falling
slowly. the proper tension is obtained. The
12
---=-~
13
needle thread tension can be adjusted by setting (I) the take-up spring tension, (2) the thread take-up spring
stroke and (3) tension spring. All these adjustments will be described in the following.
12,. ADJUAT THE ZIGZAG WIDTH (Fig.12,. 13)
1) Adjust the zigzag width
The 1.igzag width is adjusted by the knobCDo
2) Changing the needle position
when changing the position of needle entry, move the needle position changing lever as shown in the
ri~ure 13'
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From the library of: Superior Sewing Machine & Supply LLC

13, ADJUSTING THE DENSER STITCHING
(Fig.14)
Stitch length can be reduced at the star or end of sewing.
This feature is used for fastening stitch.
1) If you tum the dial with the feed lever held pressed down, the
feed lever will move. Adjust the stitch length for denser stitching taking
the graduation which meets the top surface
of the feed lever as
reference;
2) Tum the dial in the "+" direction to reduce the reverse feed
stitch lengtho "+2"means "normal feed stitch length
is 2mm" and "-2"
means "reverse feed stitch length is 2mm"o
Advert: The graduations on the dial are mere referenceo So adjust
the denser stitching while actually observing the finished seamo
14, ATTACHING I REMOVING THE HOOK
(Fig.15)
When you replace the sewing hook, remove it in the following
procedures:
I ) Tum the handwheel until the needle reaches to its highest
position ;
2) Remove the needle , presser foot, throat
plate, feed dog and bobbin case from the machine;
3) Remove the setscrew 1 and take out the
bobbi'n case positioning finger 2;
4) Loosen the two screws 4 and remove the
sewing hooko
Reverse the above procedures when inserting
the sewing hooko Advert: At this time, make sure
that top end A
of the bobbin case positioning finger
is aligned with line Bo as shown in the figure 15 o
Never let A protrude from line Bo
15, ADJUST THE POSITION OF
FEED DOG (Fig.16)
To adjust the height of the feed dog
I ) Loosen the screw I and tum the feed driving
link pin 2 using a screwdriver;
2 ) The standard height of the feed dog is
1.2mmo
-7-
1.2mm
W!!/d/d/d!AJ~
14
15
4
16
From the library of: Superior Sewing Machine & Supply LLC