Problem Settlement - HIGHLEAD GM747-3 Instruction Manual Parts Catalog

Problem settlement:
Needle break
REASON
1. Needle installed wrong.
2.
Wrong needle size.
3.
Needle is bended.
4. Wrong relation with Needle Guard.
5.
Wrong relation with looper.
6. Needle does not center the needle.
Slot ofNeedle Plate or Presser Foot.
Thread break
REASON
I.
Inferior quality of thread.
2.
Thread thicker than Needle hole.
3. Wrong threading.
4. Thread tension is too strong.
5. Needle installed wrong.
6. Thread Stand installed wrong.
7.
Over heat of Needle:
(1
)NO silicon oil
(2
)Wrong setting ofNeedle Guard
8. Thread Disc or Guide is burred.
9. Wrong relation of Needle and Looper.
10.
Needle, Looper needle Plate and guide
is burred.
Skip stitches
REASON
1. Wrong relation ofNeedle and Looper.
2. Wrong threading.
3.
Needle installed wrong.
4.
Inadequate thread tension or tension
too strong.
5. Looper point is damaged.
6.
Needle is bended.
7.
Wrong installed needle Guard.
Loosen stitches
REASON
1. Wrong threading
2. Thread is thicker than Needle
hole.
3.
Tension Disc do not press thread
properly.
4. Needle thread is not 1 ubricated.
S.
Wrong setting
of
Needle and
Loopers.
CORRECT
1. Reset needle correctly.
2. Use properly needle for fabric and thread.
3. Replace new needle.
4. Readjust Needle guard.
5. Readjust looper.
6. Readjust the Needle Plate and Presser Foot.
CORRECT
I.
Use good quality thread.
2. Use proper Needle for fabric and thread.
3.
Rethreading correctly.
4.
Readjust thread tension nut.
5. Reset needle correctly.
6. Reset thread stand for threading smoothly.
7. ( 1 )Fill in Silicone oil.
(2)Readjust Needle Guard.
8. Gring off polish or replace new one.
9. Readjust Needle and Looper.
10.
Grind.off, polish or replace new one.
CORRECT
l. Readjust Needle and Looper.
2. Rethreading correctly.
3. Reset Needle correctly.
4.
Readjust Thread Tension Nut.
5. Replace new one.
6. Replace new one.
7. Readjust Needle guard.
CORRECT
l . Rethreading correctly.
2. Use proper Needle.
3. Reset Tension Disc properly.
4.
Fill silicon oil.
5. Readjust needle and loopers.
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