7
MECHANICAL ADJUSTMENT
TOP TENSION
TO CHECK:
The standard upper thread tension should be 65 to 95 grams-force when pulling the thread (cotton thread #50)
in the direction of (B) with setting the tension dial at "3". (make sure the foot should be lowered.)
If the tension is out of the standard range, adjust it as follows:
ADJUSTMENT PROCEDURE:
1. Remove the front cover(see page 5).
2. Turn the adjusting screw (C) in the direction of (D) when the upper thread tension is too tight.
Turn the adjusting screw (C) in the direction of (E) when the upper thread tension is too loose.
3. Attach the front cover.
(B)
(C)
(E)
(D)
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