Needle Swing - Janome 659 Servicing Manual

NEEDLE SWING

NEEDLE SWING NEEDLE SWING NEEDLE SWING NEEDLE SWING
TO CHECK:
When sewing the zigzag pattern (with maximum zigzag width), if the needle bar starts moving
sideways while the needle is in the fabric, adjust the needle swing according to the following
procedure.
(The needle should start swinging when 2 to 3mm above the needle plate.)
Adjustment procedure:
1. Set the pattern selector dial at the maximum zigzag stitch width, and remove the front
cover (See page 5).
2. Loosen the two hexagon socket screws (A) on the upper shaft worm gear (B).
3. While holding the upper shaft worm gear in place, carefully turn the hand wheel and adjust
so that lateral needle swing starts from a position 2 to 3mm (C) above the needle plate after
the needle has come out of the right side of the needle plate hole.
Make sure the worm gear does not move side way, when turning the upper shaft.
Otherwise, the backlash between the worm and gear and the other gear (F) will change.
4. Tighten the two hexagon socket screws on the upper shaft worm gear.
Make sure that there is no backlash between the upper shaft worm gear and the other gear
and that smooth rotation is obtained.
If it is necessary to adjust the backlash of the gears, move the worm gear to the direction
of:
10