MECHANICAL ADJUSTMENT
UPPER THREAD TENSION DIAL
CORRECT SETTING
THE STANDARD UPPER THREAD TENSION SHOULD BE 65G - 95G WHEN 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 STANARD RANGE, ADJUST IT AS FOLLOWS:
TO ADJUST
1. REMOVE THE FRONT COVER UNIT. (SEE PAGE 5.)
2. TURN THE ADJUSTING NUT C IN THE DIRECTION OF D WHEN THE UPPER THREAD
TENSION IS TOO TIGHT.
TURN THE ADJUSTUING NUT C IN THE DIRECTION OF E WHEN THE UPPER THREAD
TENSON IS TOO LOOSE.
3. ATTACH THE FRONT PANEL COVER UNIT.
B
E
C
C
7
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