Thread Tension - JUKI MO-735N Instruction Manual

Thread tension

30
Thread tension
Thread tension should be properly adjusted to suit the various types of work.
The ideal tension setting for most fabrics and threads is between 3 and 5. How-
ever this can vary quite considerably when special threads such as filament,
woolly nylon, buttonhole twist (cordonnet), pearl yarn or decorative threads are
used. Only use decorative threads in the looper. The thread must move easily
and without resistance through the looper eye.
Infinitely variable adjustments can be made from 1 - 9.
Turn the dial downwards for less tension.
Turn the dial upwards for more tension.
Adjusting the thread tension
Turn the tension dials by quater or half number, then test sew again
and check the result.
• The loops are formed on the underside.
Tighten the upper looper thread tension, (blue) or loosen the lower
looper thread tension, red (A).
• The loops are formed on the upper side.
Tighten the lower looper thread tension, (red) or loosen the upper
looper thread tension, blue (B).
• The right-hand needle thread forms loops on the underside.
• Tighten the right-hand needle thread tension, green (C).
• The left-hand needle thread forms loops on the underside.
Tighten the left-hand needle thread tension, brown (D).
• The edge of the fabric curls up, tension of both looper threads is too
tight:
Loosen upper and lower looper thread tensions, blue and red (E).
• The fabric puckers during sewing:
Loosen the right- or left-hand needle thread tension, green or brown
(F).