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Fuel system
DANGER!
Gasoline is extremely flammable and highly explosive.
ALWAYS turn off the engine before fueling. Do not smoke
or allow open flames or sparks near the boat when add-
ing fuel.
When filling the gas tank, ground the tank to the source
of gasoline by holding the hose nozzle firmly against
the side of the deck filler plate, or ground it in some other
manner. This action prevents static electricity buildup
that could cause sparks and ignite fuel vapors.
Gasoline recommendations
USE ONLY UNLEADED FUEL. Maximum engine perfor-
mance requires the use of lead-free gasoline with the follow-
ing minimum or higher octane specification:
Inside the U.S.: (R+M)/2 (AKI) – 89
Outside the U.S.: (RON) – 93
If fuels with 89 AKI pump posted (93 RON) octane number
or higher are not available, lower octane fuels (minimum 87
AKI [90 RON] octane) can be used. With the use of lower
octane fuel, a slight decrease in power can be expected.
Premium fuel contains injector cleaners and other additives
that protect the fuel system and provide optimum perfor-
mance. Volvo Penta strongly recommends the use of pre-
mium grade fuels.
Gasoline will degrade over time. Always buy your gasoline
from a reputable dealer.
Caution!
Engine damage resulting from the use of a lower octane
gasoline than 87 AKI (90 RON) is considered misuse of
the engine. Any resulting engine damage will not be cov-
ered by the warranty.
Gasoline containing alcohol
Many brands of gasoline being sold today contain alcohol.
Two commonly used alcohol additives are Ethanol (ethyl al-
cohol) and Methanol (methyl alcohol).
See your boat's owner's manual to see if the boat's fuel sys-
tem is compatible with alcohol blended fuels. If it is, your
engine may be operated using gasoline blended with no more
than 10% Ethanol meeting the minimum octane specifica-
tion.
Caution!
Do not use any gasoline that contains METHANOL. Seri-
ous damage will result from the continued use of fuel
containing METHANOL. Any resulting engine damage
will not be covered by the warranty.
46
If you use gasoline that contains ethanol, be aware of the
following:
•
The engine will operate leaner with ethanol blended fuel.
This may cause engine problems such as vapor lock,
low speed stall, or hard starting.
•
Ethanol blended fuels attract and hold moisture. Mois-
ture inside fuel tanks can cause corrosion of the tank
material. Inspect fuel tanks at least annually. Replace
fuel tanks if inspection indicates leakage or corrosion.
Detonation (spark knock)
Detonation, or spark knock, is continually monitored by the
electronic fuel injection (EFI) system. The EFI's computer
(ECM) will automatically alter spark advance to help to pre-
vent engine damage if knock is detected, and there will be a
slight loss of power.
Preventing gum formation and corrosion
in the fuel system
To prevent gum formation and corrosion in the fuel system,
use a fuel stabilizer in the gasoline if it has been in the tank
for more than two weeks. Fuel stabilizer is available from
your Volvo Penta dealer.
Some marinas sell fuel with lead additives. Do not use
leaded fuel, as it may plug the fuel injectors.
DANGER!
Fuel leakage can contribute to a fire and/or explosion.
Frequently inspect nonmetallic parts of the engine's fuel
system and replace if excessive stiffness, deterioration,
or fuel leakage is found.
To prevent fire and explosion, perform all service pro-
cedures with the engine turned OFF.
Failure to inspect your work could allow fuel leakage to
go undetected. This could become a fire or explosion
hazard. After completing service procedures, start en-
gine and check entire fuel system for possible leaks.
To prevent fire and explosion, Volvo Penta fuel system
components meet U.S. Coast Guard requirements for fuel
and fuel vapor containment. Do not substitute automo-
tive or other non-approved parts.
Electronic fuel injection
The electronic fuel injection (EFI) fuel metering system de-
livers the correct amount of fuel to the engine under all oper-
ating conditions. The EFI system is controlled by a
microprocessor, and requires no periodic maintenance or
adjustment. If operational problems occur, see your Volvo
Penta dealer.
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