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FUEL SWITCH
When the engine has started, a negative pressure (vacuum) is generated at the intake port. The negative
pressure acts upon the diaphragm of the fuel switch and it pressed down the spring which supports the
diaphragm so that the fuel passageway is opened and fuel is fed to the carburetor.
When the engine has stopped, the spring presses the valve, the fuel passageway is closed, and no fuel flows
to the engine.
Fuel switch
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