The automatic choke valve is operated by a thermostatic coil spring contained
in an insulated housing (A), Figure 40,
which is controlled by hot air drawn
off the exhaust manifold through stove
(B) and tube (C) which lead to the
insulated housing.
The automatic choke feature pro-
vides accurate positioning of the choke
valve for all starting and operating con-
ditions. At 75° Fahrenheit the thermo-
static spring will just close the choke
valve. At lower temperatures the addi-
tional tension necessary for cold start-
ing is automatically provided. As the
engine warms up, the heat drawn into
the insulated housing (A) gradually
releases the spring tension on the choke
valve, providing automatically the
proper valve position for the warm-up
period.
Manifold Heat Control
The heat control valve is controlled
by a thermostatic spring and is auto-
matic in operation, supplying the correct amount of heat to the intake manifold
under all operating conditions.
CARBURETOR AIR CLEANERS
Standard Type
To provide for long engine life and prevent dust and abrasives from entering
the carburetor and engine, an air cleaner has been provided on the carburetor.
The standard type contains a fine copper wool filter unit which is saturated
with engine oil to which the particles of dust and foreign matter adhere as the
air is drawn into the air cleaner through the opening to the rear of the unit.
Oil Bath Type
(Optional equipment or accessory)
A new type carburetor air cleaner termed the Oil Bath type has been developed
for cars operated continuously on gravel or dirt roads or in districts where dust
storms are prevalent. This air cleaner is available as optional equipment or
accessory.
The air cleaning process of this type air cleaner is somewhat different from
the conventional air cleaner.
O W N E R' S M A N U A L 47
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