MECHANICAL ADJUSTMENT
NEEDLE SWING
TO CHECK:
If the needle bar moves sidewise while the needle is in the fabric in zigzag stitching
(The needle should start swinging when 2 to 3mm above the needle plate in right
outflow), adjust as follows:
ADJUSTMENT PROCEDURE:
1.
Remove the top cover (See page 4), set the pattern selector dial at stitch No. 3
(simple zigzag stitch) and select the maximum zigzag width.
2.
Loosen the two hexagonal socket screws (A) on the upper shaft worm.
2. While holding the upper shaft worm (B) in place, carefully turn the hand wheel and
adjust so that lateral needle swing starts from a position 2 to 3mm above the
needle plate in right outflow (E).
(Note): Make sure the worm does not move sidewise when turning the upper shaft.
Otherwise, the backlash between the worm and gear will change.
4.
Tighten the two hexagonal socket screws on the upper shaft worm.
5.
Attach the top cover.
Note:
For removal and replacement of the top cover after adjustment of the
timing of lateral needle swing, make sure that there is no backlash between
the upper shaft worm and the other gear and that smooth rotation is
obtained.
Move the upper shaft worm (B) to the direction of:
* (C) to decrease the backlash.
* (D) to increase the backlash.
11
Summary of Contents for DE 5024
Page 1: ...SERVICING MANUAL DE 5024...
Page 29: ...2 7 WIRING OF MACHINE SOCKET...
