HIGHLEAD GK600 SERIES Instruction Manual

HIGH LEAD
Purchasing Dept
Copy
GK600 SERIES
High-speed Stretch Sewing Machine
Instruction Manual
Parts Catalog
SHANGHAI HUIGONG N0.3 SEWING MACHINE FACTORY

- INTRODUCTION -
Thank you very much for purchasing 600 Series machine.
This instruction manual describes daily routine maintenance and safety precautions to keep the machine
in the best possible conditions.
Please study this manual very carefully before operating the machine.
CHUTION
OBSERVE THESE SAFETY PRECAUTIONS
Though Pegasus takes the utmost care to produce safe sewing machines and devices, operators
should follow these basic safety rules.
• To prevent accidents, do not remove safety devices or parts while operating the machine.
• Do not leave tools or other unnecessary objects on the machine table while operating the ma-
chine.
• Before maintenance, adjusting, cleaning, threading or replacing the needle, and to prevent acci-
dents, be sure the power is turned off,
Check that the machine will not operate when the pedal is
pressed.
NOTE
In case a crutch type motor is used;'it will keep on rotating by inertia after turning off power supply
CD. If the machine pedal ® is stepped on inadvertently, it is dangerous because the machine will move
unexpectedly. Keep
on stepping on the machine pedal ® until the machine comes to a stop after turning
offpower supply
CD.
e Turn the power off before leaving the machine table.
e In the event of a power failure, be sure to turn the machine off.
• Check that the machine is securely grounded.

CONTENTS
Ill BEFORE OPERATING
1. Lubrication ........•..............................•..........•...•• ·- .......... 1
2. Manual lubrication ................ · ..................................... - .......... 2
3. Filling the HR device with silicon oil .••........•.......•.......•................•••.. 3
4.
Threading .•.................•..•......•...............•.................•••••.. 4
5. Threading diagram ( 2-needle, 3-needle) ....................................••..•...• 5
Ill TEST SEWING
1. Adjusting the presser foot pressure .................................................•. 6
2. Adjusting the di ff. feed ratio .•......................•.............................. 7
3. Adjusting the stitch length ...•..............•.•...........•.............•......... 8
4. Adjusting the thread tension ...........•............................•.............. 9
Ill MAINTENANCE DURING USE
1. Cleaning the machine ........................................................... 10
2. Replacing the needle ...................••....................................... 11
3. Checking the oil circulation ....................................................... 12
4. Checking and replacing the oil filter ................................................ 13
5. Replacingtheoil ............................................................... 14
Ill PARTS CATALOG
................................................................... 15-20

Ill BEFORE OPERATING
Lubrication
After filling the oil pan, the oil surface should lie between (H) and (L) lines.
Add oil when the oil surface reaches or goes below (L).
Note : Use recommended oil (HIGH SPEED SEWING MACHINE OIL) (ISO VG22)
-1-

Ill BEFORE OPERATING
Manual lubrication
Apply 2 or 3 drops of oil by hand when the machine is used for the first time or has been left unused for some
time.
Note : Use recommended oil (HIGH SPEED SEWING MACHINE OIL) (ISO VG22)
HIGH SPEED SEWING MACHINE OIL
!
-2-

Ill BEFORE OPERATING
Filling the HR device with silicon oil
Fill the HR device with oil before it is too low in order to prevent needle thread breakage and fabric
damage.
Note : Use
recommended silicon oil

II BEFORE OPERATING
CD Open the eye guard and three covers.
Needle thread
Tirm the knots off neatly
befo~e passing through
the eye
of the needle to
tethread.
Tirm the knots off neatly
after passing through the
eye
of the looper.
Threading
Replace the looper thread
take-up after threading.
Be sure to thread the machine correctly
by referring to the threading diagran.
(See P.5)

Ill BEFORE OPERATING
Threading diagram ( 2-needle, 3-needle)
Broken lines @ for more
stretchable thread.
If the top cover thread is too
loose, use broken line @.
If the top cover thread is still
too loose after thread with
broken
line@ , use broken
line@.
-
-----~ 3 1--------...
For more
stretchable
thread
-5-
For less
stretehable
thread
Ifthe top cover thread is too
tight, use broken
line@ .
-----< 4 1------...
Broken lines ®
For more stretchable thread

Ill TEST SEWING
Adjusting the presser foot pressure
Loosen adjusting nut CD and tum adjusting screw ® to adjust the presser foot pressure. It should be as light
as possible, yet be sufficient to obtain the proper stitch formation.
-6-

Ill TEST SEWING
Adjusting the diff. feed ratio
Loosen nut CD and move the lever up ® and down to obtain the correct differential feed ratio, then tighten
nut
CD.
-7-

Ill TEST SEWING
Adjusting the thread tension
Make tension adjustments with the needle thread knob CD, top cover thread knob ® and the lower looper
knob®·
··~
To tighten
To loosen
\ ---
~
-9-

1111111 TEST SEWING
Adjusting the stitch length
Loosen adjusting screw CD and adjusting nut ® to adjust the stitch length.
Note : Stitch length adjustment must only be made after the differential feed ratio has been changed.
-8-

II MAINTENANCE DURING USE
Cleaning the machine
The slots of the needle plate and the feed dog should be cleaned. It is also necessary to clean the inside of the
back rubber plug
CD.
-10-

II MAINTENANCE DURING USE
Replacing the needle
Check the needle carefully to see that the start is scarfto the rear of the machine.
Insert the needle to the proper depth, and fasten securely.
OK!
<O
OK! NO!
... Scarf
'
-·-
-+-
'
- 11-

Ill MAINTENANCE DURING USE
Checking the oil circulation
QK! Operating
- 12-

Ill MAINTENANCE DURING USE
Checking and replacing the oil filter
Check and replace the oil filter every six months.
- 13--

Ill MAINTENANCE DURING USE
Replacing the oil
Replace the oil one month after the first use and every six months thereafter.
- 14-

HIGH-SPEED STRETCH SEWING MACHINE
•PARTS CATALOG•