MasterCraft boats are equipped with a highly innovative fuel sys-
tem. This system is designed to provide years of trouble-free service.
Some of the latest innovations related to fuel handling safety are also
incorporated into the fuel delivery system.
The system uses a fuel pump mounted in a capsule that is installed
directly in the fuel tank. A similar system has been used in automotive
vehicles for many years and has demonstrated reliable service. The
pump system in your boat was specically designed for the marine
environment and contains a number of added safety components that
are unique to the marine environment. Because of the special nature
of the design, there are no user-serviceable parts. Any parts in need
of service or maintenance will need to be addressed by an autho-
rized MasterCraft dealer. The authorized MasterCraft dealer there is
equipped with the special tools necessary to disassemble and service
the fuel capsule and associated parts. Replacement parts must
meet OEM requirements as specied by MasterCraft.
The fuel line in the boat’s bilge area that goes from the tank to
the engine is a special multi-layer armored line that is covered with
a special material known as a re sleeve. The re sleeve affords
protection to the fuel line in the unlikely event of a boat re.
The sleeve is colored orange for easy identication of the fuel
line. MasterCraft recommends daily inspection of the bilge for foreign
materials and the possibility of gas or oil leakage detection. As part of
your daily inspection, include a visual check of the orange re-sleeved
fuel line. If you see damage to the sleeve or line or in any way suspect
damage or fuel leakage, DO NOT START THE BOAT! Immedi-
ately call an authorized MasterCraft servicing dealer and let him or
her assess the situation. Even if the outing is canceled, leaking fuel can
cause serious damage to the environment and may be a potentially
hazardous situation for people and property in the area. Therefore, it
is critical to attend to any indication that there is fuel line damage or
fuel leakage as soon as possible.
Gasoline is extremely flammable and highly explosive
under certain conditions. Always stop the engine and
never smoke or allow open flames or sparks within fifty
(50) feet of the fueling area when fueling.
us i n g c a re w h en f u eli ng
Take care not to spill gasoline. If gasoline is spilled ac-
cidentally, wipe up all traces of it with dry rags imme-
diately and dispose of properly on shore.
Gasoline is explosive. If a gasoline odor is present or
gasoline is visually observed in the bilge area during
inspection, DO NOT START YOUR ENGINE! Remove
the ignition key from the ignition switch and call an au-
thorized MasterCraft dealer for service.
Allowing the fuel level in the fuel tank to fall below
one-quarter of a tank full may affect the reliability of
the fuel pump or result in damage to the fuel pump,
which is not covered under warranty.
Indmar Engines
The following information applies to boats equipped with Indmar
engines (which includes the RPT-1, MCX, LY6 and 8.1L):
What Type of Gasoline To Use
All standard Indmar EFI engines run on unleaded fuel of 89 octane
or higher. Indmar recommends purchasing fuel from a supplier that
advertises availability of fuel that meets “TOP TIER” specications. This
fuel has additives and detergents that will reduce the build-up of de-
posits in the engine.
The goal of the TOP TIER detergent gasoline standards is to cre-
ate a winning situation for gasoline retailers, engine manufacturers
and boat operators. Currently, many gasoline retailers provide fuels
with lower-quality additive packages that can build up deposits on
fuel injectors and intake valves. Others can build up deposits in com-
bustion chambers and may lead to intake valves sticking. These lower
levels of additives can have a negative impact on engine performance
and vehicle responsiveness.
For a current list of gasoline retailers supplying TOP TIER gasoline,
go to www.toptiergas.com and click on RETAILERS.
Damage to the engine by use of low-quality gasoline or
gasoline with an octane rating below the minimum level
listed will void the warranty on the boat.
mastercraft 2010 ow n e r ’s m anual • page 7-1
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