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10-22
shaft, lever and spring and insert the
shaft into the air horn with the lever
poin~ing
downwards.
Refer to the line previously scribed
on the choke valve and locate the
choke valve in its original position
with valve !dentation facing upwards.
Install
the choke valve
retaining
screws snug, but not tight.
Check for proper valve fit, binding
in the air horn and free rotation of
the shaft by moving the valve from
the closed position
to
open
position.
If it moves freely, tighten the choke
valve retaining screws while holding
the valve in the fully-closed
position.
Stake the
screws.
When staking the screws, support
the shaft and valve on a block of
wood or a metal bar
to
prevent bend-
Ing of the
shaft.
2.
Replace the air cleaner
.
bail
making sure the bail pin engages
properly in holes.
3. Locate the vent valve
sprin~
On the spigot provided on the under-
neath side of the air horn and place
the vent valve stem in
position.
In-
stall
vent
valve
locknut.
Perforn,
the vent valve adjustment operation
after carburettor is assembled and
installed on engine.
4. Install the vacuum power piston
assembly and tighten it with special
tool. Check the piston for free move-
ment in the
cylinder.
XX CAUTION
-Do not lubricate the
piston.
MAIN BODY
1. Install
the
pump
straining
screen and retaining clip.
Z. Install the pump inlet check
valve.
3.
If
the main discharge jet was
removed, position the jet on the
special tool and install in
position.
CAUTION-Make sure that the jet Is
correctly located in the
body.
The
mitred face of the jet must be paral-
lel with the direction of the air
flow.
4.
Hold the main body of the car-
burettor in an inverted_ position so
that there is no possibility of the
main discharge jet being displaced,
then with the special tool, 6A12, in-
stall the main metering jet and tight-
en
securely.
5. Place new copper gaskets in the
plug seats of the
body,
then install
GROUP
10-FUEL SYSTEM
and tighten the main-metering-jet
plug and inlet-check-valve
plug.
6. Install and
tighten the idle
tube.
"1.
Using a new gasket install and
tighten the power by-pass jet.
8.
Install the fulcrum pin in the
float hinge, place the float In the
main body so that the ends of the
fulcrum pin tit Into the grooves In
each side of the float chamber, place
the fulcrum pin clip ends In the
grooves and force the bowed part of
spring down to clip under the pro-
jection on the side of the body. Refit
the float chamber baffle.
9.
Insert the pump piston In its
cylinder taking care not to crease or
fold the
leather.
A circular twisting
motion applied to the leather assists
in this operation as does a drop of
light lubricating oil. Place the pump
spring in position over the pump and
press in the split spring-retaining
bush flush with the surface of the
main
body.
10. Place a new gasket on the malil
body then fit the pump rod and
spring
clip.
11. Locate choke control bracket
assembly
in
position,
install
and
tighten retaining screws.
THROTTLE BODY
1.
If
the throttle shaft and throttle
valve were remoyed, fit the pump
floating lever to the throttle shaft
and slide the throttle shaft into the
throttle body, with the pump floating
lever positioned so that it will, when
assembled,
make contact with the
pump rod fitted in the main body of
the
carburettor.
Refer to the line previously scribed
on the throttie valve and insert the
valve through the slot in the throttle
shaft.
The valve Indentation must
face the top of the body and be on
the idle mixture adjusting screw side
Qf the throttle shaft. Install the
throttle valve screws snug, but not
tight. Check that the throttle-lever-
locating shoulders on the threaped
end of the throttle shaft are proud
of the tHrottle body boss.
Rotate the throttle shaft while
lightly tapping
the throttle valve
within the throttle
bore.
Check for
free rotation of the throttle shaft
Hold tne throttle body up to the light
Little or no light should show be-
tween the throttle valve and throttle
bore. When the valve Is croperly
located, hold the valve closed; then
tighten
and
stake
the
retaining
screws, support the shaft and plate on
a block of wood or a metal bar to
prevent bending of the
shaft.
2. Install the throttle lever, lock-
washer and nut on the throttle shaft.
3. Install the idle needle valve and
spring in the throttle body if removed.
MAIN BODY TO
THROTTLE.
BODY ASSEMBLY
1. Place a new gasket in position
on the throttle body and fit the main
body
to
throttle
body.
Z. Install
retaining
screws
and
tighten.
3.
Hook one end of throttle re-
turn spring in hole of throttle lever and
locate other end in hole in choke control
bracket assembly.
AIR HORN TO MAIN BODY
ASSEMBLY
1. Replace the air horn In pos-
ition on the main body. Hold the
reinforcing bar in position, Install
and tighten air horn retaining
screws.
note that two longer screws are used
to retain the reinforcing
bar.
Z. Replace the choke link and in-
stall the retaining
clip.
CARIURmOR INSTALLATION
1.
Cle~~:n
the gasket surface of the
ca.rburettor and intake manifold. Place
a new gasket on the manifold and
position the carburettor on the mani-
fold.
2.
Connect the fuel line and dis-
tributor vacuum line.
3. Install the carburettor lockwash-
ers and retaining nuts and tighten.
4.
Fit the accelerator linkage, re-
turn spring and choke cable.
5. Adjust the engine idle speed, idle
fuel mixture and choke operation as
described under 'Invehicle Adjustments
and Repairs' in this
section.
Install the
air cleaner (page 10-67)
Note: Extreme care must be taken with
the idle air/fuel mixture adjustment (page
10-18)
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