Specifications and requirements
21
in unscheduled maintenance, fuel system
damage, and internal engine damage.
NOTICE
ECM01981
●
Do not use leaded gasoline. Leaded
gasoline can seriously damage the en-
gine.
●
Avoid getting water and contaminants
in the fuel tank. Contaminated fuel can
cause poor performance or engine
damage. Use only fresh gasoline that
has been stored in clean containers.
Gasoline with Ethanol
Two types of gasoline are commonly avail-
able in the U.S.A. for use in automobiles and
boats: conventional gasoline without Ethanol
and gasoline with Ethanol, which is typically
referred to as E10 gasoline. According to
federal regulations, E10 gasoline may con-
tain up to 10% Ethanol.
A high quality gasoline without Ethanol is the
preferred fuel for your Yamaha outboard mo-
tor. However, if gasoline with Ethanol is the
only fuel available in your area, your Yamaha
outboard motor is calibrated to run properly
on fresh E10 gasoline that meets the mini-
mum octane requirement specified for this
model.
NOTICE
ECM02400
Never use a gasoline for your outboard
motor that contains more than 10% Etha-
nol, such as E85 which contains 85% Eth-
anol, or gasoline containing any amount
of Methanol. These fuels can cause start-
ing and running problems, as well as se-
rious fuel system and internal engine
damage.
Gasoline containing ethanol has several
properties that may cause boat fuel system
problems.
●
Ethanol is a strong solvent (cleaning
agent) that can clean gum and varnish de-
posits from a boat’s fuel system, particular-
ly in older boats, as well as tanks and pipes
used in gasoline distribution. These re-
leased deposits contaminate the fuel and
can cause problems, such as clogged fuel
filters, carburetors, or fuel injectors, which
could result in engine damage.
●
Ethanol may dissolve resins used in the
construction of fiberglass fuel tanks. The
dissolved resins contaminate the fuel and
can cause problems, such as clogged fuel
filters, carburetors, or fuel injectors, which
could result in engine damage.
●
Ethanol is hygroscopic (has a strong at-
traction to water). Therefore, any water
that inadvertently enters the fuel system,
including moisture that is absorbed from
the air, will mix with the ethanol in the gas-
oline. If the amount of water is excessive,
the ethanol and water mixture will separate
from the gasoline in a layer at the bottom
of the fuel tank. This ethanol and water
mixture is very corrosive to aluminum fuel
Recommended fuel:
F300AET Regular unleaded gasoline
F350AET1 Premium unleaded gaso-
line
F350CA Premium unleaded gasoline
FL300AET Regular unleaded gasoline
FL350AET1 Premium unleaded gaso-
line
LF350CA Premium unleaded gasoline
Min. pump octane:
F350AET1 89
F350CA 89
FL350AET1 89
LF350CA 89
6AW-9-18.book 21 ページ ２０１０年３月２２日 月曜日 午前１１時３５分
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2019 Yamaha Motor Corporation, U.S.A.
