Necchi Supernova Instructions Manual page 50

If this condition is not met, proceed as follows:
Loosen the screws " E " of the worm gear " F " (Fig. 45) on the
upper shaft.
Take gauge " U " and place it against the eccentric " A " (in or
der to block this eccentric), then turn the balance wheel toward
you until the needle bar is in its highest position (Fig. 45),
Firmly tighten the two screws " E " of the worm gear " F ", then
take away gauge " U ".
Take away gauge plate " S " and replace it with the zig-zag me-
chains m cover plate No. 85621.
22 2 7 23 24 27 26 29
Fig.
46
50
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