8
MECHANICAL ADJUSTMENT
NEEDLE SWING
TO CHECK:
ADJUST THE NEEDLE SWING ACCORDING TO THE FOLLOWING PROCEDURE, IF THE
NEEDLE BAR STARTS MOVING SIDEWAYS WHILE THE NEEDLE IS IN THE FABRIC AT
SEWING THE ZIGZAG PATTERN (WITH MAXIMUM ZIGZAG WIDTH).
ADJUSTMENT PROCEDURE:
1.
SET THE PATTERN SELECTOR DIAL WITH MAXIMUM ZIGZAG WIDTH, AND REMOVE
THE FRONT COVER (SEE PAGE 3).
2.
LOOSEN TWO SETSCREWS.
3.
ADJUST THE NEEDLE SWING BY TURNING THE HANDWHEEL, WHILE HOLDING THE
WORM SO AS NOT TO ROTATE IT, UNTIL THE NEEDLE SWING STARTS 2–3 MM
ABOVE THE NEEDLE PLATE AFTER THE NEEDLE HAS COME OUT OF THE RIGHT
SIDE OF THE NEEDLE HOLE.
4.
TIGHTEN TWO SETSCREWS.
5.
MOUNT THE FRONT COVER.
NOTE:
AFTER ADJUSTING THE NEEDLE SWING, CHECK THAT THE UPPER SHAFT
WORM AND GEAR ROTATE SMOOTHLY WITHOUT ANY BACKLASH
BETWEEN THEM.
UPPER SHAFT WORM
GEAR
SETSCREW
(2PCS.)
2–3 MM
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