Juki MH-380 handleiding
Handleiding
Je bekijkt pagina 56 van 60
– 37 –
Troubles Causes Corrective measures
2
An independent seam is skipped on the
looper thread.
Needle
Looper
This trouble is caused when the needle
failed ·to come down through a trian-
gular loop formed by the looper thread.
™
Verify the looper motion.
Verify the clearance between the looper and
the needle.
Refer to “17. NEEDLE-TO-LOOPER RELA-
TION”.
™
Check the timing of the looper thread take-up.
Refer to “19. POSITIONING THE LOOPER
THREAD TAKE-UP”.
™
Increase the looper thread tension slightly.
Refer to “8. THREAD TENSION”.
™
Verify the thread is correctly passed through.
Refer to “6. THREADING THE MACHINE
HEAD” and “7. THREADING THE LOOP-
ERS”.
3
Seam is skipped on the needle thread
due to insuffi cient interlooping.
Needle
Looper
This trouble is caused when the needle
thread is inclined extremely to the left.
™
Verify the looper motion.
Verify the clearance between the looper and
the needle.
Refer to “17. NEEDLE-TO-LOOPER RELA-
TION”.
If it is caused in the use of a chemical
fi ber thread.
™
Reduce the sewing speed.
™
Apply silicon oil lubricant.
Refer to “11. ATTACHING THE NEEDLE”.
™
Use a needle for chemical fi ber threads.
If it is caused in the use of a synthetic
fi ber thread.
™
Reduce the sewing speed,.
™
Apply silicon oil lubricant.
Refer to “11. ATTACHING THE NEEDLE”.
3. Inadequate tight-
ness of stitches
1
Needle thread tension is too low.
™
Tighten the needle thread tension nut.
Refer to “8. THREAD TENSION”.
2
Looper thread tension is too high.
™
Loosen the looper thread tension nut.
Refer to “8. THREAD TENSION”.
3
Looper thread take-up does not supply
a suffi cient length of thread.
™
Change the threading order in the looper thread
guide.
Refer to “19. POSITIONING THE LOOPER
THREAD TAKE-UP”.
4
Thread is too thick for the needle size.
™
Try to use a different needle.
Refer to “11. ATTACHING THE NEEDLE”.
5
Set position of the frame thread eyelet
is not suitable.
™
Try to lower the position.
Refer to “21. POSITION OF THE FRAME
THREAD EYELET”.
6
Position of the thread take-up lever is
not suitable.
™
Try to push it up.
Refer to “20. POSITION OF THE THREAD
TAKE-UP LEVER”.
7
Throat plate does not fi t.
™
Replace it with other throat plate which has
larger needle hole.
Bekijk gratis de handleiding van Juki MH-380, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Juki |
| Model | MH-380 |
| Categorie | Naaimachine |
| Taal | Nederlands |
| Grootte | 10744 MB |
