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SportsBoat_F7F10.book Page 106 Monday, May 27, 2024 9:57 AM

Operation and handling requirements

Fuel requirement pinging) occurs, use a gasoline of a different
Fuel brand.
WARNING Recommended fuel (252XE):
Regular unleaded gasoline with a
 Gasoline and gasoline vapors are ex-
minimum octane rating of 86
tremely flammable. To avoid fires and
(Pump octane number) = (R + M)/2
explosions and to reduce the risk of in-
90 (Research octane number)
jury when refueling, follow these in-
structions.
Recommended fuel (255XE / 255XD):
 Gasoline is poisonous and can cause in-
Premium unleaded gasoline with a
jury or death. Handle gasoline with care.
minimum octane rating of 91 (Pump
Never siphon gasoline by mouth. If you
octane number) = (R + M)/2 95 (Re-
should swallow some gasoline, inhale a
search octane number)
lot of gasoline vapor, or get some gaso-
line in your eyes, see your doctor imme-
diately. If gasoline spills on your skin, Gasohol
wash with soap and water. If gasoline There are two types of gasohol: gasohol con-
spills on your clothing, change your taining ethanol and that containing methanol.
clothes. Gasohol containing ethanol can be used if
ethanol content does not exceed 10% and
NOTICE the fuel meets minimum octane ratings. E-85
 Do not use leaded gasoline. Leaded is a fuel blend containing 85% ethanol and
gasoline can seriously damage the en- therefore must not be used in this boat. All
gines. ethanol blends containing more than 10%
 Avoid getting water and contaminants in ethanol can cause fuel system damage or en-
the fuel tank. Contaminated fuel can gine performance problems.
cause poor performance and engine Yamaha does not recommend gasohol con-
damage. Use only fresh gasoline that taining methanol because it can cause fuel
has been stored in clean containers. system damage and engine performance
 255XE / 255XD: Use only gasoline with a problems.
minimum pump octane number of 91 or To fill the fuel tank:
a minimum research octane number of (1) Before refueling, turn off the engines.
95. Low-octane gasoline can seriously Never refuel while smoking, or while in
damage the engine. the vicinity of sparks, open flames, or
other sources of ignition.
255XE / 255XD: Your Yamaha engine has (2) Refuel the boat in a well-ventilated area.
been designed to use premium unleaded If the boat is in the water, be sure it is se-
gasoline with a pump octane number curely moored to the fueling dock. All
[(R+M)/2] of 91 or higher, or a research oc- passengers must be out of the boat dur-
tane number of 95 or higher. If knocking (or ing refueling.

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