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Section 3 • Systems & Components Overview & Operation
system should be stored in an approved
container or in a portable tank such as provided
for outboard engines and be stowed safely
outside of the engine or living compartment(s).
• Shut down the engine, motors and fans prior
to taking on fuel. Any ignition sources should
be extinguished before filling the fuel tanks.
• Close all ports, windows, doors and hatches.
• Fueling should never be done at night except
in well-lighted areas.
• Always keep the fuel nozzle in contact with
the fuel fill plate or the edge of the fuel tank
opening throughout the filling process.
• Allow areas where gasoline vapors could
collect to be ventilated before starting the
engine.
• Wipe any spillage completely and dispose of
rags or waste on shore.
• Secure the fuel cap tightly.
• Portable tanks should only be filled while on
the ground, never on board the boat.
DANGER
!
Static electricity can ignite gasoline vapors
causing serious injury/death and/or
destruction of property.
Check for leaks in tubing, connections and
hoses. Correct the cause of any leaks and
ventilate the area to insure that no fumes
remain, prior to energizing any electrical
equipment and/or starting the engines.
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.
170 Montauk
Ethanol-Blended Fuels
NOTICE
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.
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 Boston
Whaler, Mercury or may not be ethanol-compatible.
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.
R
3-5
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