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GROUP
3
n
BELLCRANK
LEVER
ANTI-STALL DASHPOT
LOCK
NUT
B1720-A
FIG.
8
Anti-Stall
Dashpot
Adjustment
Anti-Stall Dashpot Adjustment
1. Adjust
the
engine
idle
speed
and
idle fuel
mixture,
and synchro
nize
the
carburetor
linkage. Operate
the
engine
until
it
reaches
normal
operating
temperature.
2.
Lock
the throttle
linkage in
the
gauging
position
by inserting
a
1/8-
inch diameter
rod
through the
gaug
ing
holes
provided
in
the
bellcrank
lever
and
mounting bracket
on
the
left
side
of
the
bellcrank assembly
(Fig. 8).
3. Loosen
the
lock
nut
and
turn
the
anti-stall
dashpot
screw
in,
or
away from
the
bellcrank lever.
Fully
depress
the
dashpot
plunger
with
a
screwdriver
blade,
and
adjust
the
clearance
between
the
plunger
and
bellcrank
lever
to
1/8-3/16
inch.
Tighten
the
locknut
and remove
the
1/8-inch
rod
from
the
gauge
holes.
Automatic
Choke
Adjustment.
The
automatic
choke
has
an adjust
ment
to
control
its
reaction
to
engine
temperature.
By loosening
the three
screws
that
retain
the
choke
thermo
stat
housing
(Fig.7),
it
can
be
turned
to
alter
the thermostatic
spring
ad
justment.
Turning
the
housing
in
a
counterclockwise
direction
provides a
richer
mixture,
and
conversely,
a
leaner
mixture
is
obtained
by
turning
the
housing
in
a clockwise
direction
as
indicated
by
the
arrows
on
the
housing.
Refer
to the
specifications
for
the
proper
setting.
Accelerating Pump
Adjustment.
With
the throttle
lever (Fig.
9)
held
in
the
wide-open-throttle position and
the
accelerating pump
arm
fully
de
pressed
(manually),
there
should
be
0.015-inch
clearance
between
the
screw
head
and
the
pump
arm.
Turn
the
adjusting
screw
into
the
screw
head
to
increase
the
clearance
and
outward
to
decrease
the
clearance.
One-half
turn
of
the
screw
equals
approximately 0.015
inch.
To
satisfy
acceleration
require
ments
in
various
climates, the
accel
erating
pump
cam can
be
placed
in
either of
two
positions.
Aligning
the
top
hole
of
the
cam with
the
top
hole
of
the
throttle
lever
gives
the
shortest
stroke
which
is
recommended
for
warm weather or average conditions.
Aligning
the
cam
bottom hole
with
the
lever
bottom
hole
gives
the
longest
stroke which
is
recommended
for
cold weather operation.
SCREW
ADJUSTING
THROTTLE CAM SUMMER
HEAD
SCREW
LEVER
SETTING
Q
<&
ACCELERATING
/
/
PUMP ARM
/
/
ACCELERATING
/
PUMP LEVER
/
CAM
WINTER
SETTING
ACCELERATING
PUMP CAM
B1731-A
FIG. 9
-Accelerating
Pump
Adjustment
Fuel Level Check. Position
the
car
on
a
level floor.
Be
sure
the
fuel
pump
pressure
is
within
specifica
tions.
Operate
the
engine
for
30
minutes
at
1200
rpm
until
normal
operating
temperature
has
been
reached.
Place
a
suitable
container
below
the
fuel level
sight
plug
to
collect
any
spill-over of
fuel.
With
the
engine
stopped,
remove
the
fuel level
sight
plug
and
gasket
and check
the
fuel level (Fig. 10).
The fuel level
within
the
bowl
should
be
at
the
lower
edge
of
the
sight
plug opening
1/16
inch.
If
the
fuel level
is
satisfactory,
in
stall
the
sight plug.
Do
not
install
the
air cleaner at
this
time.
If
the
fuel level is
too
high,
drain
the
fuel bowl
and refill
it
and check
it
again
before altering
the
float
set
ting.
This
will
eliminate
the
pos
sibility
of
foreign
material
causing
a
temporary
flooding
condition.
To
drain
the
fuel
bowl,
remove
one
lower retaining bolt from
the
fuel
bowl
and
drain
the
fuel
into
a suit
able
container.
Install
the
bolt
and
start
the
engine
to
fill
the
fuel bowl.
After
the
fuel
level
has
stabilized,
stop
the
engine
and
check
the
fuel
level.
Float
Adjustment
1. If
the
fuel level
is
too
high,
it
should
first be
lowered below
speci
fications
and
then
raised
until
it is
just
at
the
lower
edge
of
the
sight
plug
opening.
If
the
fuel level
is
too
low,
it is
only necessary
to
raise
it
to
the
specified
level;
thus
omit
steps
3
and
4
of
this
procedure.
2.
With the
engine
stopped,
loosen
the
lock
screw
on
top
of
the
fuel
bowl just
enough
to
allow
rotation
of
the
adjusting
nut
underneath
(Fig.
10). Do
not
loosen
the
lock
screw
or attempt
to
adjust
the
fuel level
with
the
engine
running
because
the
pressure
in
the
line
will
spray
fuel
out and present a
fire hazard.
3. Turn
the
adjusting
nut approxi
mately Vi
turn
in
to
lower
the
fuel
level
below
specifications
(1/6
turn
of
the
adjusting
nut,
depending
on
the
direction
of
rotation,
will raise or
lower
the
float
assembly
at
the
fuel
level
sight
plug opening 3/64 inch).
4. Tighten
the
lock
screw.
Start
the
engine.
After
the
fuel level has
stabilized,
stop
the
engine and
check
the
level
at
the
sight
plug
opening.
The
fuel
level
should
be
below
specified
limits.
If it is
not,
repeat
step
3, turning
the
adjusting
nut
an
additional amount sufficient
to
lower
the
fuel
below
the
specified
level.
5.
Loosen
the
lock
screw
and
turn
the
adjusting
nut
out
in
increments
of
1/6
turn
or
less
until
the
correct
fuel level
is
achieved.
After
each
ad
justment,
tighten the
lock
screw,
and
then
start
the
engine
and
stabilize
the
fuel level. Check
the
fuel level
FUEL LEVEL
SIGHT PLUG
OPENING
B1167-A
FIG.
10-
Fuel Level
Adjustment
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