EPA PRESSURIZED PORTABLE FUEL TANK REQUIREMENTS
The Environmental Protection Agency (EPA) requires portable fuel systems
that are produced after January 1, 2011, for use with outboard engines to
remain fully sealed (pressurized) up to 34.4 kPa (5.0 psi). These tanks may
contain the following:
•
An air inlet that opens to allow air to enter as the fuel is drawn out of the
tank.
•
An air outlet that opens (vents) to the atmosphere if pressure exceeds
34.4 kPa (5.0 psi).
FUEL DEMAND VALVE (FDV) REQUIREMENT
Whenever a pressurized fuel tank is used, a fuel demand valve is required to
be installed in the fuel hose between the fuel tank and the engine. The fuel
demand valve prevents pressurized fuel from entering the engine and causing
a fuel system overflow or possible fuel spillage.
The fuel demand valve has a manual release. The manual release can be used
(pushed in) to open (bypass) the valve in case of a fuel blockage in the valve.
a -
Fuel demand valve ‑ installed in the
fuel hose between the fuel tank and
the engine
b -
Manual release
c -
Vent/water drain holes
FUEL TANKS
Portable Fuel Tank
Select a suitable location in the boat within the engine fuel line length
limitations and secure the tank in place.
Permanent Fuel Tank
Permanent fuel tanks should be installed in accordance with industry and
federal safety standards, which include recommendations applicable to
grounding, anti‑siphon protection, ventilation, etc.
FUEL SUPPLY MODULE PRIMING PROCEDURE
The fuel supply module (FSM) is not vented to the ambient air. The air trapped
in the FSM, fuel lines, and fuel rail, will be slightly compressed during the initial
ignition key on with a dry or drained fuel system. Additional key on events
under these conditions, will not compress the air further to finish the priming of
the FSM. Excessive number of key on events may eventually damage the fuel
pumps. The volume of air trapped in the FSM must be purged to prime the fuel
system. This can be achieved by connecting a tool to the fuel rail Schrader
valve fitting to quickly purge the system into an approved container, or by
cranking the engine.
a
c
b
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OUTBOARD INSTALLATION
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Summary of Contents for 150 FourStroke
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