Yamaha 25A, Owner'S Manual

Page: 47 / 131

3-6
EMF30010
FILLING FUEL AND
ENGINE OIL
FILLING FUEL
1) Remove the fuel tank cap.
2) Fill the fuel tank carefully.
3) Close the cap securely after refueling.
Wipe up any spilled fuel.
Ring Free Fuel Additive
Gasoline is a precise blend of many differ-
ent substances, each chosen to give cer-
tain characteristics. Gasoline blends have
been changing in recent years in
response to concerns about pollution and
resulting emissions regulations. One of
the most obvious changes has been the
elimination of lead from most fuels.
As gasoline has changed, the amount of
additives such as aromatics and oxy-
genates has increased. These additives
are important for the engines in passen-
ger cars, but they can have detrimental
effects in marine engines, particularly 2-
cycle outboards because of increased
deposits in the combustion chamber.
When enough deposits collect, piston
rings begin sticking. Performance drops
and engine wear increases dramatically.
E
902055
Fuel tank capacity:
Refer to SPECIFICATIONS on Page 4-1.
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