22 Chapter 2: Components/Systems
4600 SCB Owner’s Manual Supplement
Fuel System
Carefully read the fuel sections of the owner’s manual and the engine operation manual.
Fuel Quality
Make sure your fuel suppliers are
reputable and can be relied upon to
furnish clean, high quality fuel.
Once you have found such suppliers,
keep your tank as full as possible
with their fuel, allowing for expan-
sion due to temperature variations.
Then, if you are forced to add to the
tank with a potentially poor quality
supply, the portion of poor quality
fuel will be minimized.
Fuel Fills
Fuel fill fittings are located on the port and starboard side decks (see right). Fuel receptacle caps are marked either
“Diesel” or “GAS”. If you experience difficulty filling a fuel tank, check to see that the fuel fill and vent lines are free
of obstructions and kinks.
Anti-siphon Valves
•
If your yacht is gas powered, it may be equipped with anti-siphon
valves. Anti-siphon valves are an integral part of the gas fuel line
barb fitting on each fuel tank. These valves are spring loaded and
are opened by fuel pump vacuum.
• In the unlikely event of a fuel line rupturing, the anti-siphon
valve would prevent fuel from siphoning from the tank.
FIRE, EXPLOSION AND OPEN FLAME HAZARD!
• It is very important that the fuel system be inspected thoroughly the first time it is filled and
at each subsequent filling.
• The fueling instructions in the engine operation manual MUST be followed.
WARNING!
!
• Diesel Only: Air in the diesel supply system can stop an engine or severely restrict perfor-
mance. If you suspect air in the fuel lines, refer to your engine operation manual for detailed
instructions on how to bleed the system.
• Avoid the storage or handling of gear near the fuel lines, fittings and tanks.
CAUTION!
!
Discharge of fuel into navigable waters is prohibited by law. Violators are subject to legal
action by the local authorities.
NOTICE
PORT FUEL FILL
DECK FUEL FILL FITTING LOCATIONS
DECK FITTING
(PORT DECK FITTING SHOWN -
STARBOARD SIDE TYPICAL)
FUEL VENT
STBD. FUEL TANK
(STARBOARD FUEL TANK ROUTING SHOWN.
FUEL TANK VENT ROUTING
AFT
FUEL FILL FITTING
ON DECK
PORT FUEL TANK ROUTING TYPICAL)
FIRE & EXPLOSION HAZARD! If an engine problem is
caused by fuel starvation, check the anti-siphon valve. If
the valve is stuck or clogged, shut down the engine and
replace it. Except in an emergency, NEVER operate the
engines without the anti-siphon valve.
WARNING!
!
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