JUKI MO-6000G Series Engineer's Manual page 89

I
ex,
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I
Trouble
16. Uneven double chain slllches
17. The looper thread bulges out
18. Looper thread bite
19. Knotting posllion is not correct.
Right aide
Knots are deflected to
the upper
looper side.
Case (1)
Thread tension
Presser foot
Knife width
Looper thread take-up adjustment
Knife width
Adjustment of the looper thread take-up
Threading
AdJustmenI or lhe looper thread take-up
Case(2)
The looper thread tension Is not enough.
The pressor foot comas Into contact with the tlvoal plate
unevenly.
The presser foot pressure Is not enough.
The knife width is too small for the overedging width.
The looper thread take-up draws out excessive looper
thread.
The knife wldth Is too large for the overedging width.
The looper thread take-up draws oul Insufficient amount
of looper lhread.
Re-threading after .lhtead breakage .etc. has been done
erroneously.
The height of the looper thread take-up (lefl) Is not
correct
The upper IOoper thread gulde (right) is too short.
Check and Corrective measures
Slightly increase the tension.
Make the presser fool come Into contact with the throat
plate evenly.
Increase the presser foot pressure.
Use a
knife having width suited to the overedglng width.
Decrease the radius of the looper thread take-up (left)
(reduction in dimension I). Raise the looper thread take·
UJ>
(right) (Increase In distance
0).
Use a knlfe having width suited to the overedging width.
Increase the radius of the looper thread take-up (lefl)
(increase dimension I). Lower the looper thread lake-up
(right) (reduction In distance 0).
See the lhreading diagram.
Raise the looper lhread lake-up (lefl) to Increase lhe
amount of upper looper thread, and the knotting position
moves toward tho tower looper side.
Increase distance K.
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