Table of Contents
Advertisement
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 6).
2.
Loosen two screws.
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 on the needle plate after the needle has
come out of the right side of the needle hole.
4.
Tighten two screws.
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.
MECHANICAL ADJUSTMENT
Upper shaft worm
2–3 mm
Gear
11
MODEL BL9
Screw
(2pcs.)
Advertisement
Table of Contents
