Owner’s Manual Page 89
Fuel Systems - Section I
D. Fuel Pick-Up
The fuel withdrawal line attaches to the fuel tank at the
fuel pick-up. See Figure I4 for fuel pick-up location.
The fuel withdrawal is positioned in the fuel
tank to achieve optimum fuel usage, and fuel
line routing. At certain speeds and hull trim
angles, the fuel supply at the withdrawal can
increase or decrease accordingly. Be extremely
care ful when attempting to operate the boat on
a mini mum amount of fuel. Though some fuel
may be in the tank, the rela tive trim angle of
the boat may cause the fuel to flow away from
the withdrawal.
NOTICE
On the V458 models, access to the fuel fittings
is through the engine compartment.
Figure I4: Starboard Fuel Tank Fittings Shown
(Port & Stbd Typical)
E. Fuel Level
The amount of fuel in the fuel tanks can be accessed
through the Electronic Vessel Control (EVC) system.
An EVC display for each engine is mounted at the
helm and monitors their respective systems to include
fuel level. Refer to the manufacturer’s literature
included in your owner’s packet for specific informa
-
tion regarding ECV operation and information display.
F. Fuel Senders
The fuel sender consists of a float which travels up
and down a stationary tube. The float measures the
level of the fuel in the tank and sends a signal to the
EVC display. See Figure I5.
Figure I5: Fuel Sender Operation
Due to the mechanical nature of the fuel sender, varia-
tions in readings during various speeds of operation
may occur. This system is merely a relative indication
of the avail able fuel supply and not a calibrated
instru ment. With this type of sending unit a more
accurate measurement of fuel level is obtained with
the boat in a level position.
The display readings will also vary with the trim angle
of the boat. When sitting at a dock and the boat is
nearly level, the fuel display will register accurately.
Refer to Figure I3. When boating, the trim angle of the
boat changes and affects the gauge readings. Under
these conditions, the fuel sender will register “full” for
the first few hours of running time until the fuel level
drops below the 3/4 or 1/2 mark. This is caused by the
angle of the fuel in the tank as shown in Figure I6.
Figure I6: Effects of Trim Angle
Fuel Vent Hose
Diesel Return Tube
Fuel Fill Hose
Fuel Pick-Up
Fuel Sender
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