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SportsBoat_F5K14.book Page 142 Wednesday, September 6, 2023 2:56 PM

Operation and handling requirements

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

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