Mercury 75 Pro XS FourStroke Operation Maintenance Installation Warranty Manual page 112

LOW PERMEATION FUEL HOSE REQUIREMENT
Required for outboards manufactured for sale, sold, or offered for sale in the
United States.
• The Environmental Protection Agency (EPA) requires that any outboard
manufactured after January 1, 2009, must use low permeation fuel hose
for the primary fuel hose connecting the fuel tank to the outboard.
• Low permeation hose is USCG Type B1‑15 or Type A1‑15, defined as not
exceeding 15 g/m²/24 h with CE 10 fuel at 23 °C as specified in SAE J
1527 ‑ marine fuel hose.
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 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.
OUTBOARD INSTALLATION
b
c
46273
a - Fuel demand valve ‑ installed in the
fuel hose between the fuel tank and
the engine
b - Manual release
c - Vent/water drain holes
102
eng