11
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 when 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 6).
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 at 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
(2 pcs.)
2–3 mm
