JUKI MO-6000S series - Important Points in Adjustment

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3) Important points in adjustment
1 Increase the thread take-up amount of the needle thread take-up lever.
Refer to the adjustment values related to the needle thread guide and needle thread take-up lever.
2 Reduce the feed of the looper threads. (Mainly lower looper thread)
Set J, K, L and M for the soft chain distances.
Fine adjustment of J and M is required to produce even stitches.
3 Adjsut the thread tension while checking the appearance and touch of the stitches produced.
1) Minimize the needle thread tension as far as satisfactory tightness of needle thread stitches is
obtained.
2) Increase the upper looper thread tension as much as possible.
4 If the chain-off thread does not stretch satisfactorily, and if it is not satisfied, proceed with the
following.
1) Increase the upper looper thread tension.
2) Further increase distances J and K.
3) Further increase the upper looper thread tension.
4) Increase the lower looper thread tension to a maximum as far as good tightness of needle
thread stitches is maintained.
5) Increase the thread take-up amount. If the needle thread is poorly tensed, increase the needle
thread tension.
5 Fine adjustment for producing stitches with better appearance and touch
1) If the knotting point varies at high or low sewing speed, slightly reduce L, and increase the
lower looper thread tension.
2) If a knot is made at a high point, increase J and I.
3) If the needle thread is likely to break, decrease the thread take-up amount and lower the needle
thread tension.
6 Pay attention to the following
1) Minimize the needle thread tension as far as satisfactory tightness of needle thread stitches is
obtained.
2) The knot of upper and lower looper threads should be made near the upper edge of a material.
3) Minimize the lower looper thread tension as far as even stitches are maintained.
4) For a safety stitch machine, adjust the soft chain making mechanism so that uniform chain-off
thread is produced during double-chain stitching and overlocking.
The value given in ( ) parentheses
is the adjustment value for the
safety stitch machine. (Unit : mm)
Upper looper thread
guide (middle)
Upper looper thread guide (upper)
Upper looper thread guide (right)
Lower looper
thread guide
Lower looper thread take-up
Looper thread
take-up (rigjt)
Looper thread
take-up (left)
E
22
G
17.5
K
14
O
9.5
Soft chain stitches
Standard stitches
Looper thread should not be
loosened and stretch well
The looper thread loosens
e
e
When the chain-off
thread is pulled.
When the chain-off
thread is pulled.
L
33.5 (27)
N
19
M
26.5
I
26.5 (24)
J
43.5(36.5)
H
43.5
F
65