11
Adjusting
the
bottom
feed
driving
motion
Setting: When the machine is
set
for its longest stitch
and
the
needle
bar
is positioned 1 mm
beyond
its
t.d.c.
(pin in hole 4)
the
feed dog
must
not move
when
the
reverse-feed
control is
operated.
11.0.1
Adjustment:
11.1 Turn the shaft to
make
screws 1 of feed driving eccentric 2 accessible and loosen them
just enough forthe eccentric to be turned against strong resistance.
.2 Turnthe balance wheel untilthe needle bar is positioned 1 mmbeyond its t.d.c.
.3 Insertthe cylindrical pininhole4 ofthe bearing plate (to blockthe machine).
.4
Set
the machine for its longeststitch.
.5 Move
the
reverse-feed control up
and
down
and
turn feed driving eccentric 2 until
the
notch
on
the
eccentric
is
visible
and
the
screwdriver
in
feed
rock
shaft
crank
3
is
completely
motionless.
.6 Inthis position,makingsure that the feed
driving
eccentric is not moved along the shaft,
tighten
one
of
the
screws
1.
.7 Remove the cylindricalpinfromthe hole of the bearing plate.
.8 Tighten
the
other
screw
1.
.9 Checkthis
adjustment
(see
"Setting").
-10
Remove
the
screwdriver
from
feed
rock
shaft
crank
3.
20
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
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