Fuel Valve

When the engine is not operating, the fuel valve © is kept closed by the tension of the spring (D, which closes the fuel passageway and stops the flow of fuel to the carburetors.

When the engine has started, negative pressure (vacuum) @ is generated in the combustion chamber and reaches the diaphragm through a passage in the carburetor's main bore and the vacuum hose. This negative pressure (vacuum) ® is higher than the spring pressure which causes the diaphragm to force open the fuel valve © and allow fuel to flow to the carburetor assembly.

"Fuel stop" condition
600 Bandit Fuel Valve Positions
"Fuel flow" condition

VACUUM FUEL

A WARNING

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