21
TROPHY Owner’s Manual Supplement
1901 Bay - 2101 Bay - 2401 Bay
• Allow areas where gasoline vapors could
collect to be ventilated before starting the
engine(s).
• Wipe any spillage completely and dispose
of rags or waste on shore.
• Secure the fi ll cap tightly.
• Portable tanks should only be fi lled while
on the ground; never on-board the boat.
Ethanol is an oxygenated hydrocarbon compound that has
a high octane rating and therefore is useful in increasing
the octane level of unleaded gasoline. The fuel-system
components of your Mercury engine(s) have been tested
to perform with the maximum level of ethanol-blended
gasoline (10% ethanol) currently allowed by the EPA in
the United States.
Special precautions should be considered with the use
of fuel containing ethanol in your system. Fuels with
ethanol can attack some fuel-system components, such
as tanks and lines, if they are not made from acceptable
ethanol-compatible materials. This can lead to operational
problems or safety issues such as clogged filters, leaks
or engine damage.
Your boat was manufactured, and shipped from the
factory, with ethanol-compatible materials. Before
introducing gasoline with ethanol into your fuel tank,
ask your dealer if any components have been added or
replaced that are not recommended by Trophy, Mercury
or may not be ethanol-compatible.
Filling the Tank
It is best to maintain a full tank of fuel when the engine
is not in use. This will reduce air flow in and out of the
tank due to changes in temperature as well as limiting
exposure of the ethanol in the fuel to humidity and
condensation.
Example of Phase Separation
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4
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The use of improper gasoline or additives can
damage your fuel system and is considered
misuse of the system. Damaged caused by
improper gasoline or additives WILL NOT be
covered under warranty.
NOTICE
The use of fuels containing ethanol higher than
10 percent (E-10) can damage your engine and/
or fuel system and will void the warranty.
!
CAUTION
E85 FUELS COULD SERIOUSLY DAMAGE
YOUR ENGINES AND MUST NEVER BE USED.
Condensation
Upper Phase (water+fuel+ethanol)
Lower Phase (water+ethanol)
Fuel Inlet
Ethanol-Blended Fuel
Phase Separation
Humidity and condensation create water in your fuel
tank which can adversely effect the ethanol blended fuel.
A condition called phase separation can occur if water
is drawn into the fuel beyond the saturation point. The
presence of water in the fuel beyond the saturation level
will cause most of the ethanol in the fuel to separate
from the bulk fuel and drop to the bottom of the tank,
significantly reducing the level of ethanol in the fuel
mixture in the upper level (phase). If the lower level
(phase), consisting of water and ethanol, is deep enough
to reach the fuel inlet, it could be pumped directly to
the engine(s) and cause significant problems. Engine
problems can also result from the reduced ethanol/fuel
mixture left in the upper phase of the tank.
Additives
There is no practical additive known that can prevent or
correct phase separation. The only solution is to keep
water from accumulating in the tank.
If phase separation does occur, your only remedy is to
drain the fuel, clean and dry the tank completely and refill
with a fresh, dry load of fuel.
