TO ADJ UST THE THREAD TENSION DIALS
TO CHECK:
WHEN THE TENSION DIAL IS SET AT"3", THE STANDARD THREAD TENSION MEASURED WITH
WHITE POLYESTER THREAD (#50) SHOULD BE AS FOLLOWS:
• LEFT NEEDLE THREAD 36-48GRAM
• RIGHT NEEDLETHREAD 13-25GRAM
• UPPER LOOPER THREAD 9-19 GRAM
• LOWER LOOPER THREAD 17-27 GRAM
ADJUSTMENT PROCEDURE:
1. REMOVETHE BACK COVER ANDTHETOP COVER.
2. ADJUST EACH THREAD TENSION WITH THE ADJUSTING PLATE (A).
* IF THE THREAD TENSION IS AT STRONGER LEVEL, SHIFT THE ADJUSTING PLATE IN THE
DIRECTION (B).
* IF THE THREAD TENSION IS AT WEAKER LEVEL, SHIFT FHE ADJUSTING PLATE IN THE
DIRECTION (C).
3. ROTATETHE THREAD TENSION DIAL WHILE SEWING TO CHECK THE SEWING
PERFORMANCE.
4. ATTACH THE TOP COVER AND THE BACK COVER.
FRONT COVER UNIT
TOP COVER
t
ADJUSTING PLATE (A)
27
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