Honda HHH25D Manuel De L'utilisateur page 31

NOTE:
Gasoline spoils very quickly depending on factors such as light exposure,
temperature and time.
In worst cases, gasoline can be contaminated within 30 days.
Using contaminated gasoline can seriously damage the engine (carburetor
clogged, valve stuck).
Such damage due to spoiled fuel is disallowed from coverage by the warranty.
To avoid this please strictly follow these recommendations:
• Only use specified gasoline (see page 26).
• Use fresh and clean gasoline.
• To slow deterioration, keep gasoline in a certified fuel container.
• If long storage (more than 30 days) is foreseen, drain fuel tank and carburetor
(see page 56).
Gasoline containing alcohol
If you decide to use a gasoline containing alcohol (gasohol), be sure its octane
rating is at least as high as that recommended by Honda.
There are two types of "gasohol": one containing ethanol, and the other
containing methanol.
Do not use gasohol that contains more than 10% ethanol.
Do not use gasoline containing more than 5% methanol (methyl or wood alcohol)
and that does not also contain co-solvents and corrosion inhibitors for methanol.
NOTE:
• Fuel system damage or engine performance problems resulting from the use of
gasoline that contains more alcohol than recommended is not covered under
the warranty.
• Before buying gasoline from an unfamiliar station, first determine if the gasoline
contains alcohol, if it does, find out the type and percentage of alcohol used.
If you notice any undesirable operating symptoms while using a particular
gasoline. Switch to a gasoline that you know contains less than the
recommended amount of alcohol.
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