11
MECHANICAL ADJUSTMENT
TOP TENSION
TO CHECK:
THE STANDARD UPPER THREAD TENSION SHOULD BE BETWEEN 65 - 95g, WHEN
PULLING THE THREAD (COTTON THREAD #50) IN THE DIRECTION OF (B) WITH THE
TENSION DIAL SETTING AT “3”. (MAKE SURE THE FOOT IS LOWERED.)
IF THE TENSION IS OUT OF THE STANDARD RANGE, ADJUST IT AS FOLLOWS:
ADJUSTMENT PROCEDURE:
1. REMOVE THE FRONT PANEL COVER UNIT. (SEE PAGE 10.)
2. TURN THE ADJUSTING NUT (C) IN THE DIRECTION OF (D), WHEN THE UPPER
THREAD TENSION IS TOO TIGHT.
TURN THE ADJUSTING NUT (C) IN THE DIRECTION OF (E), WHEN THE UPPER
THREAD TENSION IS TOO LOOSE.
3. ATTACH THE FRONT PANEL COVER UNIT.
C
E
D
B
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