Owner’s Manual Page 77
Fuel Systems - Section I
Figure I3: Fuel Tank Location
(Domestic Fuel System Shown - Models May vary)
NOTICE
Use only clean fuel of the type and grade
recom mend ed by the engine manu factur er.
Engine damage resulting from the use of a
lower octane gasoline is consid ered misuse of
the engine and will void the engine warranty.
Refer to the section on gasoline requirements
in the engine manual for information on octane
specifi cations.
B. Fuel System - Export Models
For export models
the equipment used by Four Winns
is designed to provide maximum engine fuel flow and
prevent the accidental system over-pressurization by
the use of a vented gas fill. It should be noted that
there is
not
an automatic nozzle shut-off feature as
with the domestic fuel system. When filling the fuel
tank, strict attention must be observed to prevent the
possibility of a fuel spill. See Figure I4.
Avoid overboard spills. When tank is almost full
the sound from the fuel fill/vent will change. The
pitch will become higher indicating the tank is
close to being full. Stop pumping fuel into tank.
DO NOT TOP OFF.
When the pressure reduces in the fuel tank the fuel fill
inlet control opens and allows the remaining fuel in the
fuel line to drain into the fuel tank.
It should also be noted that when the air temperature
rises so does the pressure in the fuel tank. When
this happens the pressure is released through either
the fuel limit vent valve or the grade valves depend-
ing upon the level of the fuel in the tank. Either way
the gas vapors are scrubbed by the carbon canister
before being released into the air. As the temperature
drops, air is brought back in through the fuel vent al-
lowing the system to breath.
Figure I2: Carbon Canister w/Heat Shield
On both Four Winns
®
domestic and export models,
with a single fuel tank installed, the location of the tank
is forward of the aft bilge compartment below the floor.
Please visit our website at www.fourwinns.com for fuel
tank capacities. See Figure I3.
Aft Bilge Compartment
Fuel Tank
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