Fuel Requirements; Gasoline - Yamaha Motor F75 Manuel De L'utilisateur

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Specifications and requirements
EMU36361

Fuel requirements

EMU44791

Gasoline

Use a good quality gasoline that meets the
minimum octane requirement. If knocking or
pinging occurs, use a different brand of gas-
oline or premium unleaded fuel. Yamaha rec-
ommends that you use alcohol-free gasoline
(see Gasoline with Ethanol) whenever possi-
ble.
The use of a poor quality gasoline may result
in starting and running problems. If you en-
counter drivability problems, which you sus-
pect could be related to the fuel you are
using, Yamaha recommends that you switch
to a recognized high quality brand of gaso-
line, such as a gasoline that is advertised as
Top Tier Detergent Gasoline. (North America
only) NOTICE: Failure to comply with these
recommendations may also result in un-
scheduled maintenance, fuel system dam-
age, and internal engine damage.
For North America
Recommended fuel:
Regular unleaded gasoline
Min. pump octane number (PON):
86
For Oceania
Recommended fuel:
Regular unleaded gasoline
Min. research octane number (RON):
90
ECM01982
NOTICE
 Do not use leaded gasoline. Leaded
gasoline can seriously damage the en-
gine.
18
 Avoid getting water and contaminants in
the fuel tank. Contaminated fuel can
cause poor performance or engine dam-
age. 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., Canada, Australia and
New Zealand for use in automobiles and
boats: conventional gasoline without Ethanol
and gasoline with Ethanol, which is typically
referred to as E10 gasoline. According to fed-
eral regulations, E10 gasoline may contain 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
[ECM04480]
model.
ECM02402
NOTICE
Never use a gasoline for your outboard
motor that contains more than 10% Etha-
nol, such as E15 which contains 15% Eth-
anol or E85 which contains 85% Ethanol,
or gasoline containing any amount of
Methanol. These fuels can cause starting
and running problems, as well as serious
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 deposits
from a boat's fuel system, particularly in
older boats, as well as tanks and pipes
used in gasoline distribution. These re-

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