ﬁgures developed by Four Winns.
F. Fuel Senders
When the fuel gauge begins to register below the “full”
mark, the gauge readings will drop much faster until it
reads” empty”. When this occurs, the trim angle has
affected the sender reading. When the gauge regis-
ters “empty”, the sender has bot tomed out and there
may be 3 to 4 gallons of fuel in the tank.
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
fuel gauge. See Figure I4.
See Figure I6.
Figure I4: Fuel Sender Operation
Figure I6: Trim Angle Effect with Low Fuel
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 available fuel supply and not a calibrated
instrument. With this type of sending unit a more
accurate measurement of fuel level is obtained with
the boat in a level position.
G. Fuel Filters
Fuel ﬁlters are installed on each engine. Filters should
changed frequently to assure an adequate supply of
fuel to the engine. Refer to the engine manual for
additional information. The engine manual is included
in the owner’s information packet.
The gauge readings will also vary with the trim angle
of the boat. When sitting at a dock and the boat is
nearly level, the fuel gauge 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 I5.
Canister-type ﬁlters should be changed
H. Gas Vapor Detector
A gas vapor detector is optional on the V375 models.
The gas vapor detector will monitor the engine
compartment and notify the operator of an accumula-
tion of gasoline vapors. The operator must take
immediate action upon warning to avoid the possibility
of an explo sion.
The sensing unit is usually mounted towards the rear
of the engine compartment. The alarm unit is mounted
at the dash.
Figure I5: Effects of Trim Angle
It is very important to keep track of hours and fuel
consumption to obtain an average gallon per hour
consumption ﬁgure. Refer to the fuel log located at the
back of this manual. This will prevent any problems
with running out of fuel on the water.
Always personally inspect the engine compart-
ment and sniff for fuel vapors before starting
the engine. Remember, a gas vapor detector is
a mechanical device. DO NOT rely exclusively
on its operation.
Dealers are equipped with some general ﬁgures on
consumption which can be used as a guide until
speciﬁc information on your boat is deter mined.
Because of boating conditions, speed, weight and
other factors common to your situation, fuel consump-
tion will vary between your boat and consumption
Fuel Systems - Section I
Owner’s Manual Page 96
|Categories||Four Winns Manuals, Four Winns V-Series Manuals|
|Tags||Four Winns V375|
|Document Type||Owner's Manual|
|Product Brand||Boats and Cruisers, Four Winns. For support contact your dealer at http://www.fourwinns.com/locate-dealer.aspx|
|Document File Type|
|Wikipedia's Page||Outboard Marine Corporation|
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