Question about 2000 Harley Davidson FLSTC Heritage Softail Classic

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Harley fuel valve diagram - 2000 Harley Davidson FLSTC Heritage Softail Classic

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The fuel supply valve is a vacuum operated valve under the left side of the fuel tank and it delivers fuel to the carburetor when the handle is turned so it is pointing up in the vertical position (ON) and vacuum is supplied to it from the carburetor. The fuel supply is turned OFF when the handle is in the horizontal position and when no vacuum is supplied to the valve from the carburetor. There is a RESERVE fuel supply and it is operational when the handle is turned to point down. IT SHOULD BE TURNED OFF when the engine is not running because if it is not it is possible for fuel to drain into the engine, dilute the engine oil and
cause engine damage.

Posted on Oct 18, 2014

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