11
MACHANICAL ADJUSTMENT
HOOK TIMING
SET THE PATTERN SELECTOR DIAL AT ZIGZAG STITCH WITH MAXIMUM ZIGZAG WIDTH.
THE AMOUNT OF ASCENDING TRAVEL OF THE NEEDLE BAR FROM ITS LOWER POSITION
TO THE POSITION WHERE THE TIP OF THE ROTARY HOOK EXACTLY MEETS THE RIGHT
SIDE OF THE NEEDLE SHOULD BE 1.4 - 2.0 MM.
1. SET THE PATTERN SELECTOR DIAL AT MAXIMUM ZIGZAG WIDTH.
BRING THE NEEDLE AT RIGHT LOWEST NEEDLE POSITION.
2. REMOVE THE SETSCREW ON THE NEEDLE PLATE, THE NEEDLE PLATE AND THE
BOBBIN HOLDER.
3. LOOSEN THE HEXAGONAL SOCKET SCREWS ON THE LOWER SHAFT GEAR.
4. TURN THE HANDWHEEL TOWARD YOU TO RAISE THE NEEDLE BAR 1.7 MM FROM ITS
RIGHT LOWEST POSITION.
5. WHILE HOLDING THE HANDWHEEL TO PREVENT THE NEEDLE BAR FROM MOVING,
TURN THE LOWER SHAFT GEAR IN THE DIRECTION OF ARROW UNTIL THE TIP OF THE
ROTARY HOOK EXACTLY MEETS THE RIGHT SIDE OF THE NEEDLE.
6. TIGHTEN THE HEXAGONAL SOCKET SCREWS ON THE LOWER SHAFT GEAR.
7. ATTACH THE BOBBIN HOLDER, NEEDLE PLATE.
HEXAGONAL SOCKET SCREWS
NEEDLE PLATE SETSCREW
NEEDLE PLATE
BOBBIN HOLDER
THE POINT OF THE ROTARY HOOK
EXACTLY MEETS AT THE RIGHT SIDE
OF THE NEEDLE POINT
NEEDLE IS SET AT RIGHT
NEEDLE POSITION
1.4 ~ 2.0 mm
LOWEST NEEDLE POSITION
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