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3-26
CARTER CARBURETOR
ENGINE FUEL AND EXHAUST SYSTEMS
(1
00l
SECTION 3-E
CARTER CARBURETOR AND CLIMATIC CONTROL
CONTENTS OF SECTION 3
·E
Paragraph
Subject
Page
3-20
Carter Carburetor Identification
Numbers
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3-26
3-21
D
escription
and Operation of
Carburetor
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3-26
3-22
Description
and
Operation
of
Carter Climatic Control (Au t o-
matic
Choke)
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3-29
Paragraph
Subject
Page
3-23
Adjustment of
Fast
Idle C
am,
Choke
Unloader,
and F
ast Idle
Adjustment Screw
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3-31
3-24
Disassembly, Cleaning,
Assembly
of Carter Climatic C
ontrol.
.
.
. . ..
3-32
3-25
Disassembly, Cleaning,
I
nspection
of Carter
Carburetor. .
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3-33
3-26
Assembly
a
n d Adjustment
o
f
Carter
Carburetor .
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3-36
SERVICE BULLETIN REFERENCE
Bulletin No.
Page
No.
SUBJECT
3-20 CARTER CARBURETOR
IDENTIFICATION NUMBERS
Carter Carburetors used on 1948 and 1949
engines have
the
following
model and code
numbers :
S
er ies
Mod
el
Code No.
40-50
WCD
663 S
70
WCD
664 S
The model designation, which is cast on the
main body below the gasoline
inlet,
indicates
the
basic
design of the unit. The code number,
which
is stamped on a metal tag attached by
one
bowl cover screw, furnishes the key to the
size, calibrations, and other alterations re-
quired
for the particular year and series engine
for which the unit is specified.
Carburetors having
different code numbers
a
r e
not interchangeable even though the model
designations
are
ident ica l. Th
e
va r iat ions be-
tween carburetors
of differ ent
code numbers
may not be apparent
on inspection, but they
have a very important
bearing
on
the per for m-
ance of the engine.
When ordering or using replacement parts
for a Carter carburetor
always
make certain
that they are as specified for the carburetor
mod
el
and code number, as well as for the car
model and series.
OWL
COVER
Fig.
3-32-Carter Carburetor Assembly
3-21 DESCRIPTION AND OPERATION
OF CARTER CARBURETO R
a
. General
Description
The WCD Carter carburetor is a dual-barrel
down draft type. See figure
3-32.
It
contains a
float system, low speed (idle) system, high
speed system, power
system,
accelerating
sys-
tem, and climatic control (automatic choke).
An accelerator vacuum switch, which is part of
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