by the carbureter throttle. This valve provides the
maximum fuel feed to the "high speed" nozzle when the throttle is fully
opened for high speeds and for quick "pick up." During the ordinary
driving ranges this valve controls the amount of fuel being used, thus
providing all the economy possible. This valve is entirely automatic and
requires no adjustment.

The passage-way from the mixing chamber to the intake manifold is
controlled by a butterfly valve which is called the throttle-valve and
is connected to the throttle-lever on the steering wheel as well as to
the foot accelerator, its position determining the amount of gas and air
or mixture being fed the engine.

STARTING

A choke button is provided on the instrument board to assist in
starting. Pulling out this button closes a butterfly choker valve (see
cut) in the air intake passage of carbureter which restricts the air
opening of the carbureter, and consequently produces a richer mixture.

To start engine, pull out choke button all the way. Advance spark lever
about half way and throttle lever about one-quarter way and depress
starter pedal.

As soon as motor fires when starting, this control should be released
part way, otherwise too much fuel will be drawn from carbureter, causing
flooding of the motor and failure of the latter to continue to promptly
fire. After starting, motor should be allowed to run "part choke" as
stated for a few minutes while warming up, then the choker control
should be fully released, or pushed in completely on the instrument
board, and engine allowed to run normally for sometime until water in
cylinder jackets is thoroughly warmed up before starting to make final
carbureter adjustments.

HEAT CONTROL--STOVE

In the colder seasons warm air is fed to air intake of carbureter
through the warm air elbow "F" (see cut). This elbow connects the
carbureter with the warm air stove, which is a casting surrounding the
two exhaust heat tubes which supply exhaust heat to the carbureter
jackets as described below.

The amount of heat required for proper carburation depends on the
temperature of the outside air. The first means of control is in the
warm air stove just described, which should be connected to the
carbureter furnishing warm air to carbureter air intake in all seasons
of the year when the outside air temperature is below 50 deg. F., whenever
the outside air temperature runs above this point cold air should be
furnished t