Fuel Information - Malibu Boats Wakesetter 20VTX 2019 Owner's Manual

damage to the fuel pump as it attempts to compensate. Even
with the best of care, some water may get into the fuel tank or
separate from the fuel that is pumped into it. If there is water present,
it will settle on the bottom of the tank. If the pump begins to reach any
water, it may cause malfunctioning in the engine.
When pumping fuel, do not leave the nozzle unattended in
the fuel fill. Although the fuel system has been manufactured to
avoid spit-back of fuel, and most gasoline dispensers will shut off if
removed from fuel fill, it is always a wise consideration to provide full
attention to the process.

Fuel Information

Whenever possible, use 93 octane gasoline! Admittedly,
there are locations where only lower-grade fuel is available, but to
ensure long-term, high performance, the use of 93 octane is strongly
recommended. In such instances, boaters may use 89 or 91 octane
fuel, but no lower grade.
Lower-octane fuel may cause deposits on the fuel injectors and
intake valves, among engine components. Continued over a period
of time, the lower-octane fuel could damage the engine, and such
damage is not covered under warranty.
One of the first signs of improper fueling is a knocking noise
resulting from spark plug misfire. Knock misfire will damage the
engine over time. Because the engine is equipped with a knock
sensor, operators will be alerted when the sensor triggers a warning
through the video screen. Do not ignore such warning!
The engines are engineered to run smoothly. If there are any
symptoms of misfire, hesitation, poor idling or if the engine becomes
hard to start, such indications should not be ignored. If the gasoline
has been in the boat's tank for an extended period (in excess of two
weeks), particularly without a stabilizer, the issue sometimes may be
addressed by properly replacing the fuel with new gasoline.
to determine the proper manner in which fuel can be off-
loaded from a boat. NEVER dump fuel into the water. It
is illegal to do so as well as environmentally damaging.
Allowing fumes to be vented can also cause a situation in
which a spark or open flame could cause a fire, which is
extremely dangerous and could result in serious injury or
death.
Never add diesel fuel to the fuel tank! Diesel fuel and regular
gasoline do not mix. Diesel fuel will cause permanent damage to the
engine, and such damage is not covered under warranty. If diesel
fuel is accidentally pumped into the Malibu system, all contents of
the fuel tank must be properly disposed of on-shore, and the engine
2019 Malibu Boats, LLC Owner's Manual • Page 104
Always dispose of unused
fuel properly on-shore.
Check with local authorities
https://www.boat-manuals.com/
should not be started until the system is thoroughly cleared and the
correct fuel pumped into the fuel tank.
When Fueling
When pumping fuel,
do not leave the nozzle
unattended in the fuel fill.
Although the fuel system
has been manufactured to
avoid spit-back of fuel, and
most gasoline dispensers
will shut off if removed from
fuel fill, it is always a wise
consideration to provide full
attention to the process.
Malibu strongly recommends using 93-octane TOP TIER
detergent gasoline. The additives and detergents in these fuels
can reduce the amount of build-ups in engines that adversely affect
performance and shorten the life of an engine. Retailers selling TOP
TIER gasoline can be found at www.toptier.com.
Never use E-85 or other E- fuels. This type of fuel does not
contain sufficient additives to protect the engine nor perform to
expected standards.
Never use leaded fuel. Malibu engines are designed and
constructed to run properly ONLY on unleaded gasoline. If finding
unleaded gasoline is an issue for a boat owner, check with your
authorized Malibu dealer to locate unleaded gasoline.
Never use gasoline containing higher than ten percent (10%)
ethanol. Some fuel contains MBTE (methyl butyl tertiary ether) as a
blend to enhance octane. Blended fuel is permissible as long as it is
blended and does not exceed the percentage allowed.
Never use gasoline that contains any methanol. This type
of fuel can cause corrosion to some of the engine parts, and such
damage would not be covered under warranty.
When fueling the boat outside the United States or Canada,
verify the chemical components of the available gasoline. You
must use only approved fuel. Work with your authorized Malibu
dealer to locate appropriate gasoline for use.
When the Boat Is Not in Operation
(Fuel)
When maintained as directed in the Care and Maintenance
section of this Owner's Manual, boats can reasonably be expected
to be ready for operation when they are not used for a period of two
(2) weeks or less. Longer than two (2) weeks requires particular
attention to fueling, among other operations. If the engine does not
start and run smoothly, it is likely that there are issues involving
gasoline.