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Fuel
Systems
Manufacturer Requirements
FEDERAL LAW
183.566 - Fuel pumps: Placement
Each fuel pump must be on the engine
it serves or within 12 inches of the engine, unless
it is a fuel pump used to transfer fuel between tanks.
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Most engines are equipped by the engine manufacturer
with a fuel pump as an installed engine component. For engines
that are not so equipped, a remote fuel pump, usually electric,
may be used. In order to keep the length of the pressurized
portion of the fuel distribution line at a minimum, it is
required that a remote fuel pump be installed within 12-inches
of the engine. The 12-inches are measured directly to the
engine, not along the fuel line.
Pumps used to transfer fuel from one tank to
another may be installed in other locations, and are not required
to be within 12 inches of the engine.
FIGURE
33 - Remote Fuel Pump
TO COMPLY WITH THE LAW
- If the fuel pump is not on the engine,
is it within 12 inches of the engine
- If the fuel pump is not on the engine
or within 12 inches of the engine, is it used only
to transfer fuel from tank to tank?
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