FEED
DOG
ADJUSTMENT
Before adjusting feed dog, regulate stitch length
for longest stitch. If feed dog is correctly adjusted,
oil teeth should rise evenly and completely above
throat plate as shown in Fig. 35.
If adjustment is required, first remove throat plate,
then tip machine back and turn machine pulley over
toward you until feed dog is at its highest position.
Loosen fork screw shown in Fig. 36 and
raise
or lower
feed dog to correct position. Re-tighten fork screw.
When
adjusting feed dog, make
certain
it does not
strike
sewing hook.
Feed
dog should be
set
so
that
when
needle
is at
lowest position of cycle, it will be slightly in front
of
center
point of needle hole in feed dog. If
needle
is not correctly located in needle hole, tip machine
back to loosen pinch screws shown in Fig. 36 and
adjust feed dog to correct position. After securely
re-tightening pinch screws, check for correct positions
of
needle
bar and
presser
bar.
FEED
ECCENTRIC
ADJUSTMENT
The feed eccentric is provided with a gib which
con be adjusted to take up unnecessary play between
feed
eccentric
and
eccentric
body. To
adjust
gib,
first loosen two locking
screws
beside
gib and turn in
two
adjusting
screws
in gib until
all
play is
eliminated
and eccentric fits snugly into slot of eccentric body.
Securely tighten two locking
screws.
The feed driving
eccentric
adjusting
disc
spring
provides
pressure
against
feed
eccentric
cam to pre
vent
it from moving
out
of
position
while
the
machine
is operating.
The
disc
spring
collar
may be moved to
right or left to
adjust
spring
pressure.
Normally, col
lar is
set
flush with hub of
eccentric
body.
THROAT
PLATE
ADJUSTING
SCREWS
LOCKING
SCREW
Fig. 35.
Feed
Dog and Throat
Plate
FORK
SCREW
® e
ROCK
FRAME
PINCH
SCREWS
Fig.
36.
Feed
Adjustments
LOCKING
SCREW
ECCENTRIC
ADJUSTING
r\i€/-
rm
i
ad
DISC
SPRING
Fig.
37.
Feed
Eccentric
Adjustment
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