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I - 1
GASOLINE FUEL SYSTEMS
Gasoline fuel systems used in Four Winns® boats are
designed to meet or exceed the requirements of the U.S.
Coast Guard, the National Marine Manufacturers Asso-
ciation, and the American Boat and Yacht Council in ef-
fect at the time of manufacture.
NOTICE
Use only clean, dry fuel of the type and grade
recommended by the engine manufacturer. The
use of incorrect or contaminated fuel can cause
engine malfunction and serious damage. En-
gine damage resulting from the use of a lower
octane gasoline is considered misuse of the en-
gine and will void the engine warranty. Refer to
the section on gasoline requirements in the en-
gine manual for information on octane specifi-
cations.
The port and starboard fuel tanks are located forward
of the respective engines. See Figure I1 and the loca-
tor drawing at the back of this manual. The capacity of
each fuel tank is 150 gallons. The 378 Vista™ is
equipped with a fuel tank control switch at the helm
which in turn operates the fuel valves for the tanks.
Earlier 378 Vista™ models were equipped with a manual
fuel tank selector panel. See Figure I2. Each system
allows you to choose which fuel tank(s) you want your
engines and/or your generator to draw from.
Port Fuel Tank
Figure I1: 378V Fuel Tank Locations
A. Fuel Tank Selector Switch & Fuel Tank
Selector Panel Operation
By pressing the top portion of the fuel tank control
switch, marked "PORT FUEL TANK", opens the port
378 Vista™ Owner's Manual
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378
FUEL SYSTEMS
fuel tank valve. The red light on the top portion of the
switch will be lit to notify you of activation. Fuel will be
drawn from the port fuel tank to run the engines and/or
the generator.
Pressing the bottom portion of the switch, marked
"STBD FUEL TANK", opens the starboard fuel tank
valve and allows fuel to be drawn for both engines and/
or generator. The red light on the bottom portion of the
switch will be lit.
Placing the fuel tank control switch in the center posi-
tion allows for the fuel to be drawn from both tanks
simultaneously. When the boat ignition switches are
placed in the "OFF" position ("powered down") the fuel
pumps no longer pump fuel to the engines and/or gen-
erator.
For earlier 378 Vista™ models equipped with a fuel tank
selector panel, manually turn the indicator lever to the
desired position. Depending upon where the indicator
lever is positioned will determine which valve(s) is
opened or closed and from which fuel tank(s) your en-
gine and/or generator draws fuel from.
Starboard Fuel Tank
B. System Testing
All gasoline fuel systems have been factory inspected
and pressure tested in accordance with regulations in
effect at the time of manufacture. Additionally, each fuel
tank must pass rigid tests and inspections performed by
the fuel tank manufacturer.
Utility Hatch (In Front of Engine Lid)
Figure I2: 378V Fuel Tank Selector Panel
Section I
Page 1
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