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MC 9500
( + )
Adjusting Needle Thread Tension
The standard upper thread tension should be 75 to 90 grams when the tension dial is set at
“AUTO”, measured with a #50 polyester thread being pulled at approximately 110 mm/sec.
in the direction of arrow.
1 Set the Thread tension dial at “AUTO”.
2 Lower the presser foot.
3 Remove the face cover and adjust the thread tension.
(A) If the thread tension is less than 75 g,
.................turn the screw in the direction of “ + ”.
(B) If the thread tension is more than 90 g,
...............turn the screw in the direction of “ - ”
Pulling direction: (pulling speed 110 mm/sec.)
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