Specifications and requirements
comends that you use alcohol-free (see al fuel system maintenance.
Gasohol) gasoline whenever possible.
EMU27270
Ring Free Fuel Additive
Recommended gasoline:
Gasoline is a precise blend of many different
substances, each chosen to give certain
characteristics. Gasoline blends have been
changing in recent years in response to con-
cerns about pollution and resulting emis-
sions regulations. One of the most obvious
changes has been the elimination of lead
Do not use leaded gasoline. Leaded from most fuels.
gasoline can seriously damage the en-
gine.
Regular unleaded gasoline with a min-
imum Octane rating of 86
(
Pump Octane Number) = (R+M)/2
ECM01981
NOTICE
q
As gasoline has changed, the amount of ad-
ditives such as aromatics and oxygenates
q
Avoid getting water and contaminants has increased. These additives are impor-
in the fuel tank. Contaminated fuel can
cause poor performance or engine
damage. Use only fresh gasoline that
has been stored in clean containers.
tant for the engines in passenger cars, but
they can have detrimental effects in marine
engines, because of increased deposits in
the combustion chamber. When enough de-
Gasohol
posits collect, piston rings begin sticking.
There are two types of gasohol: gasohol con- Performance drops and engine wear in-
taining ethanol (E10) and that containing creases dramatically.
methanol. Ethanol can be used if the ethanol While many additives available may reduce
content does not exceed 10% and the fuel deposits, Yamaha recommends the use of
meets the minimum octane ratings. E85 is a Ring Free Fuel Additive, available from
fuel containing 85% ethanol and must not be your Yamaha dealer. Ring Free Fuel Addi-
used in your outboard motor. All ethanol tive has repeatedly proven its ability to clean
blends containing more than 10% ethanol combustion deposits from inside the engine,
can cause fuel system damage or cause en- notably the critical piston-ring-land area, and
gine starting and running problems. Yamaha fuel system components. Follow product la-
does not recommend gasohol containing beling for use instructions.
methanol because it can cause fuel system
damage or engine performance problems.
It is recommended that you install a water-
separating marine fuel filter assembly (10
micron minimum) between your boat’s fuel
tank and outboard motor when using etha-
nol. Ethanol is known to allow moisture to be
absorbed into boat fuel tanks and systems.
Moisture in the fuel can cause corrosion of
metallic fuel system components, starting
and running complaints and require addition-
EMU36880
Muddy or acidic water
Yamaha strongly recommends that you have
your dealer install the optional chromium-
plated water pump kit if you use the outboard
motor in muddy or acidic water conditions.
However, depending on the model it might
not be required.
EMU36330
Anti-fouling paint
A clean hull improves boat performance. The
boat bottom should be kept as clean of ma-
16
| Categories | Marine, Yamaha Outboard Manuals |
|---|---|
| Document Type | Boat Motor Manual Free Download. Marine Operator's Boating Guide. |
| Tags | Yamaha 50 |
| Model Year | 2007 |
| Download File |
|
| Language | English |
| Product Brand | Yamaha Motor. Yamaha Motor Corporation, USA - Support Customer Relations for US: 1-800-962-7926
Yamaha Boats: 1-800-962-7926 Yamaha Outboard Customer Relations: 1-866-894-1626 , Yamaha Outboard |
| Document File Type | |
| Publisher | yamaha-motor.com |
| Wikipedia's Page | Yamaha Motor Company |
| Copyright | Attribution Non-commercial |
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