−48 −
Standard Adjustment
(29) Locus cut of the top feed dog
Locus cut mechanism makes longer the section where the feed
dog actually feeds cloth by leveling the lower side of the locus of
top feed dog motion.
By this mechanism, the effect of prevention of irregular stitches
can be obtained when sewing materials thicker than medium-
weight ones such as knitted fabrics or the like although the effect
is less for light-weight materials.
The locus cut mechanism does not work in the state of delivery.
1
2
Set the standard of cut amount to approximately 0.5 mm.
Locus of feed dog
Cloth
Range of
effective feed
Range of
effective feed
Cut amount
(30) Adjusting the longitudinal position of the top feed dog
Clearance between top feed dog 2 and the groove of presser 3, when
top feed stroke0 is maximum, is as shown in the list below.
Clearance between top feed dog 2 and groove of presser 3 when top
feed dog 2 travels to the front end = dimension A
2
3
A
Thrust collar
1
Top feed arm C
Model name dimension A
MO -6916R-F
6 -50H 0.8
F 6 60H
MO -6943R -1D6 -307 1.0
All models of MO-6900R, and J 0.5
excluding aforementioned models
(Unit : mm)
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