60
Fuel System
selections to keep the boat properly balanced
whenever possible.
If a fuel supply problem occurs in the port or star-
board tank, all four engines should be switched
to the center tank first. When the fuel level in
the center tank drops below 1/4, the engines can
be switched to the other good tank. The idea is
to keep the boat properly balanced as long as
possible. If all four engines are run from either
the port or starboard fuel tank, the trim tabs will
need to be adjusted as necessary to compensate
for listing and maintain a level running attitude.
CAUTION
WHEN EMERGENCY FUEL TANK SELECTIONS ARE NECESSARY,
PAY ATTENTION TO THE FUEL LEVEL IN THE SELECTED TANK
AND SWITCH TO ANOTHER TANK WHEN THE FUEL LEVEL
IN REACHES 1/4. THIS WILL PREVENT THE ENGINES FROM
RUNNING OUT OF FUEL BEFORE SWITCHING THE FUEL
SUPPLY AND KEEP SOME FUEL IN RESERVE.
WHEN ENGINES RUN OUT OF FUEL THEY WILL SHUT DOWN
SUDDENLY AND YOU WILL LOOSE THE ABILITY TO CONTROL
THE POSITION OF THE BOAT FOR SEVERAL MINUTES WHILE
THE FUEL SYSTEM IS PRIMED SO THE ENGINES CAN BE
RESTARTED. THIS COULD ENDANGER THE BOAT AND CREW
IN ROUGH SEAS, AN INLET OR A BUSY WATERWAY. ALWAYS
MAKE SURE TO RETURN THE SELECTOR VALVES TO THE
NORMAL POSITION WHEN THE FUEL SUPPLY PROBLEM IS
CORRECTED.
Notice:
The procedure to prime the fuel system on
outboard engines is specific to the type and
model of engines on your boat. You should
refer to engine manufacturer owner’s manu-
al for the priming procedure for your engines.
5.3 Diesel Generator Fuel System
The diesel fuel system for the generator is com-
pletely separate from the gasoline system. The
diesel fuel tank is located in the stern bilge below the
cockpit and is filled from a fuel fill deck plate on the
starboard gunnel labeled “Diesel.” The diesel fuel
system is not equipped with an anti-siphon valve
and there is a fuel return line from the engine that
returns unused fuel to the fuel tank.
Proper diesel engine operation requires a good sup-
ply of clean, dry diesel fuel. Improper marina fuel
storage techniques, limited boat usage, etc. can
cause the fuel to become contaminated. Periodi-
cally, it may be necessary to pump accumulating
water and contaminated fuel from the bottom of
Diesel Generator Fuel Filter Location
Behind Sound Shield Access Panel
the fuel tank. If the generator fuel system on your
boat becomes contaminated, contact your dealer or
Scout Customer Service for assistance.
Algae can grow in the accumulated water in diesel
fuel tanks. This condition is most prevalent in warm
climates. Periodically adding a high quality diesel
fuel additive containing an algicide may be required
to control algae in your boating area. You should
contact your dealer or the generator manufacturer
for additional information regarding fuels and ad-
ditives.
Notice:
Do not allow the generator to sit unused for an
extended period with the fuel tank less than
full. Changes in temperature and weather
conditions can cause condensation in diesel
fuel tanks that are less than 3/4 full.
Diesel Fuel Filter
The diesel fuel filter is installed on the generator
inside the sound shield. Replace the filter cartridge
as recommended by the generator manufacturer or
as needed.
It is particularly important to monitor the condition
of the fuel filter frequently because diesel engines
circulate much more fuel than they consume. Be-
cause of the volume of fuel that flows through the
filter, it typically must be changed at least twice a
season or more frequently depending on the quality
of the fuel and the hours run. Follow the generator
manufacturer’s instructions for replacing the filter.
Notice:
Diesel fuel systems may need to be primed
after servicing. Refer to the generator owner’s
manual for information on priming the fuel
system.
https://www.boat-manuals.com/
Summary of Contents for 420 LXF
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Page 29: ...29 Operation https www boat manuals com ...
Page 56: ...56 Helm Control Systems NOTES https www boat manuals com ...
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Page 183: ...183 MAINTENANCE LOG Appendix C Date Hours Dealer Service Repairs https www boat manuals com ...
Page 184: ...184 Maintenance Schedule Log Date Hours Dealer Service Repairs https www boat manuals com ...
Page 185: ...185 Maintenance Schedule Log Date Hours Dealer Service Repairs https www boat manuals com ...
Page 186: ...186 Maintenance Schedule Log Date Hours Dealer Service Repairs https www boat manuals com ...
Page 187: ...187 Maintenance Schedule Log Date Hours Dealer Service Repairs https www boat manuals com ...
Page 188: ...188 Maintenance Schedule Log Date Hours Dealer Service Repairs https www boat manuals com ...
Page 189: ...189 Appendix D BOATING ACCIDENT REPORT https www boat manuals com ...
Page 190: ...190 Boating Accident Report https www boat manuals com ...
Page 191: ...191 Boating Accident Report https www boat manuals com ...
Page 192: ...192 NOTES https www boat manuals com ...
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Page 202: ...202 Scout Boats Inc 2531 Hwy 78 West Summerville SC 29483 https www boat manuals com ...