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14-50
CARBURETOR-WWC3
-. .... .-
- - -
CHOKE ASSEMBLY
& - *
I
BAFFLE
SHORT AIR
HORN
i a T
<-&,$
SCREWS
TO BE
INSTALLED HERE
NK419
Fig. 3-Removing
or Installing the Air Horn
and disengage the link from the diaphragm plunger
(stem) and the choke lever. (Refer to Fig. 1.)
(7)
Remove the remaining air horn attaching screws,
then lift air horn straight up and away from main
body, as shown in (Fig. 3).
Disassembling the Air Horn
(1)
Disengage the accelerator pump plunger from
the pump arm hook by tilting down and out from un-
der hook, as shown in (Fig. 4 ) . Remove the compres-
sion spring.
Place the accelerator pump plunger in a jar of clean
gasoline or kerosene to prevent the leather from
drying out.
(2) Remove the vacuum power piston from the air
horn, using an open end wrench and wood block, as
shown in (Fig.
5).
(Exert sufficient pressure on end of
wrench to force piston out of its well in air horn.)
(This assembly is staked in the air horn and care
ACCELERATOR PUMP PLUNGER
w '
NK421
CHOKE DIAPHRAGM"
-
ATTACHING SCREWS
Fig. 5-Removing
the Vacuum Power Piston
should be used at removal.) Discard air horn gasket.
(3) Remove the choke vacuum diaphragm and
bracket assembly and place to one side to be cleaned
as a special item.
A
liquid cleaner may damage
the diaphragm material.
(4)
Test the freeness of the choke mechanism in the
air horn. The choke shaft must float free to operate
correctly. If the choke shaft sticks in the bearing area
or appears to be gummed from deposits in the air
horn, a thorough cleaning will be required.
Main Body
(1)
Remove the float fulcrum pin spring, then
re-
move the fuel inlet needle valve, seat and gasket.
(2)
Slide the float baffle up out of its grooves, then
remove the float and fulcrum pin.
(3) Remove the venturi cluster attaching screws,
then remove the venturi cluster gasket, as shown in
(Fig.
6).
Discard the gasket.
Fig. &Removing
or Installing the Accelerator
Pump Plunger
Fig. 6-Removing
or Installing the Venturi Clustor
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