Fueling
The ignition timing as set by the factory requires the use of unleaded fuel with an Anti-Knock Index Number
(AKI)/Pump Octane Number range between 89 octane and 93 octane. Nearly any medium-grade gasoline avail-
able for automotive use may be used.
FUELING
8-1
Fuel Systems
The ProStar and MariStar models are equipped
with a new, highly innovative fuel system. This sys-
tem is designed to provide you with 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 cap-
sule that is installed directly in a fuel tank. A similar
system has been used in automotive vehicles for over
a decade and has provided years of proven service.
The pump system in your boat was specifically de-
signed for the marine environment and contains a
number of added safety components that are unique
to the marine system. 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 your MasterCraft dealer. The tech-
nical team there is equipped with the special tools
needed to disassemble and service the fuel capsule and
associated parts.
The fuel line that travels in the boat’s bilge area
from the tank to the engine is a special multi-layer
armored line that is covered with a special material
known as a fire sleeve. The fire sleeve affords protec-
tion to the fuel line in the unlikely event of a boat fire.
The sleeve is colored orange in order to afford
easy identification to the fuel line. MasterCraft rec-
ommends daily inspection of the bilge for foreign
materials and the possibility of gas or oil leakage de-
tection. As part of your daily inspection, include a
visual check of the orange fire-sleeved fuel line. If you
see damage to the sleeve or line–or in any way sus-
pect damage or fuel leakage, DO NOT START YOUR
BOAT! Immediately call your MasterCraft servicing
dealer and let him or her assess the situation.
Fuel Ssytems for 19 Skier and Older
ProStar and MariStar Models
The 2004 models are equipped with a pump-in-
tank fuel module that has an internal check-valve system,
and therefore does not require a shut-off valve. In the
SportStar 19 and older ProStar and MariStar models, how-
ever, the fuel system features an ON-OFF valve.
If at any time a fuel line leak is detected in one of these
boats, turn OFF the fuel valve, which is located on the fuel
tank, to stop the fuel supply flow. Immediately contact your
dealer for proper repair.
Alternatives and Additives
We do not recommend that you use alcohol-modified
fuels in your MasterCraft boat because of the following
side effects:
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 your boat.
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