-
Timing of the automatic control eccentric A 85241 (Fig. 39).
General Rules
The automatic control eccentric controls the impulses of the cam
axle, and has to be adjusted so that, while sewing a zig-zag
automatically, the cam axle makes each of the single impulses
when the needle bar is on its way upward.
The timing
without
gauge has to be done as follows:
Remove the automatic mechanism mounting plate.
Bring the needle bar to its highest position.
In this position, the highest point of the eccentric must be on top
of the upper shaft.
Firmly tighten the screw 85279, taking care to avoid end play
in the upper shaft.
H
85279
Fig. 39
44
Copyright -2004
Summary of Contents for Supernova
Page 1: ...Instructions For Servicing The Necchi Supernova Sewing Machine 1 Copyright 2004...
Page 15: ...15 Copyright 2004...
Page 17: ...Fig 11 Fig 12 Fig 13 17 Copyright 2004...
Page 23: ...False needle Fig 18 False needle Fig 19 23 Copyright 2004...
Page 43: ...Fig 38 43 Copyright 2004...
Page 49: ...49 Copyright 2004...
