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Necchi Supernova - Page 45

Necchi Supernova
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The timing of the eccentric A 85241 in relation to the needle bar
can be made with the help of the gauge 10-7 by following this
procedure:
Remove the automatic mechanism mounting plate.
Insert pin " B " of gauge 10-7 (Fig. 39) into the timing hole on
eccentric A 85241.
Turn the flywheel " G " slowly until the base of the gauge rests
on the two side rims of the machine.
Fig. 40
If the timing is correct, needle bar " E " should now be at its
highest position and the connecting link " H " should be in a
straight vertical position.
If the above requirements are not met, loosen the screw No. 85279
of the eccentric No. A 85241 (use Allen wrench 20-5) and, while
gauge 10-7 is kept against the surface of the machine arm and
the pin " B " remains inserted in the timing hole of the eccentric,
turn the flywheel " G " slowly until the needle bar " E " reaches
its highest position. Then tighten the screw No. 85279 firmly.
45
Copyright -2004

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