11
The amount of ascending travel of the needle bar from its lowest position to the position ( ) where the tip of
the rotary hook exactly meets the right side of the needle should be 3.25 to 3.55 mm.
1. Remove the needle plate and bobbin holder.
2. Turn the power switch on.
3. Select the pattern (left position). Set the zigzag width at 0.
4. Remove the free-arm cover.
Turn the handwheel toward you to lower the needle at its lowest position.
5. Loosen the hexagonal socket screw
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(2 pcs.).
6. Move the needle bar 3.4 mm from the lowest position.
7. Turn the lower shaft gear until the tip of hook meets the right side of the needle while holding the handwheel.
8. Tighten the hexagonal socket screw
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(2 pcs.).
9. Attach the free-arm cover, bobbin holder and needle plate.
Mechanical Adjustment
Adjustment of hook timing
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Needle plate
Bobbin holder
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Lower shaft gear
Left position ( )
(#14)
Tip of hook meets the
right side of the needle
Lowest needle position
3.25 – 3.55mm
