Alignment Of Feed Dog In Relation To The Slots In The Needle Plate - Necchi Supernova Instructions Manual

- Alignment of feed dog in relation to the slots in the needle
plate.
It is necessary to check whether the rows " C " of the feed dog
(Fig. 57) are parallel with, and at the same distance from the
edges
of the slots in needle plate " D ".
The motion of the feed dog in the needle plate slots must be unit-
form; namely the distance " a " (Fig. 58), when the feed dog starts
its horizontal movement in the slot, must be the same as the di-
stance " b " (Fig. 59) when the feed dog has completed its hori-
zontal movement in the slot, This test can be made by setting the
stitch regulating knob for the maximum stitch length, both for
ward and reverse.
Adjustment " A " Two cases may occur: 1st Case
The rows " C " of the feed dog (Fig. 57) are parallel with the
edges of the needle plate slots, but the distances " a " and " b "
are not the
Fig. 57
same. To adjust, proceed as follows: loosen screws " E " (Fig.
60) that fasten the two pointed bearing pins " F " of the feed
rock shaft " G ", as well as the screw " H " that fastens the crank
" L ". By hitting slightly with a soft hammer on the pins " F ",
displace the shaft
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Copyright -2004