9
NEEDLE SWING
Correct setting
If the timing of needle swing is not correctly adjusted, the needle will move sidewise while it
is in the fabric. Ideally the needle should start swing from a position 2- 3 mm above the
needle plate in its right outflow with maximum zigzag width.
To adjust
1.
Set the pattern selector dial with maximum zigzag width, and remove the front cover.
(See page 4.)
2.
Loosen two set screws.
3.
Adjust the needle swing by turning the balance wheel, while pressing the worm so as
not to rotate it, until the needle swing starts at 2 - 3mm on the Needle plate after the
needle has come out of the right side of the needle hole.
4.
Tighten two set screws.
5.
Attach the front cover.
Note: After adjusting the needle swing, check that the upper shaft worm and gear rotate
smoothly with minimum backlash between them.
Summary of Contents for JF1018S
Page 1: ...SERVICING MANUAL Model JF1018S...
Page 24: ...22 WIRING...
