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Fuel
Systems
Manufacturer Requirements
FEDERAL LAW
183.562 - Metallic fuel lines
(a) Each metallic fuel line that is mounted
to the boat structure must be connected to the engine
by a flexible fuel line.
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Metallic fuel lines are relatively rigid and
need protection from vibration. This is particularly true
for the fuel lines attached to the boat structure that run
from the fuel tank to the engine.
A boat responds to forces created by waves
and resultant pounding by the hull twisting and moving. An
engine vibrates and moves in its resilient mounts. If a rigid
fuel line is connected directly to the engine, unusual stress
is likely to be transmitted to its connections, probably resulting
in leakage. For these considerations, a flexible portion of
fuel line is required to connect the metallic fuel line that
is attached to the boat to the engine connection.
The flexible fuel line may be hose, “USCG
Type A1” or “USCG Type B1,” depending on
compliance with the criteria of 183.558.
TO COMPLY WITH THE LAW
- If a metallic fuel line is used, is
there a flexible fuel line connecting this line to
the engine?
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