Advertisement
(A)
(B)
(A) Adjustment for height of main feed dog
1. Open the cloth plate cover, and raise needle at its highest position by turning handwheel.
2. Set the sewing pitch at "3".
3. Loosen set screw of vertical adjusting shaft.
4. Turn vertical adjusting shaft by screw driver so that the clearance between upper surface of needle
plate and point of feed dog is 0.9 ~ 1.1 mm.
5. After adjustment, tighten set screw of vertical adjusting shaft securely.
NOTE: (a) Stitches will tend to pucker in fine fabrics or feed dog will touch needle plate, in case feed dog
reaches to higher position.
(b) Fabrics will not be fed sufficiently or feed dog will touch other parts like loopers, in case feed dog
reaches to lower position.
(c) When adjusting, cut mark on vertical adjusting shaft should be to your side.
(B) Adjustment for height of differential feed dog
Differential feed dog should be the same level as upper surface of needle plate when main feed dog
goes down and reaches the same level as upper surface of needle plate. Adjust by loosening set screw
of differential feed dog.
NOTE: (a) Adjust at position of "1.0" of feed ratio.
(b) Differential feed dog should not be inclined when tightening set screw of differential feed dog.
(c) In case difference between height of main feed dog and differential feed dog is too much, fabrics
will not be fed correctly
www.promelectroavtomat.ru
- 10-
Advertisement
