Honda Untitled Owner's Manual page 17

GASOLINES 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": that containing ethanol, and that containing methanol.
Do not use gasohol that contains more than 10% ethanol. Do not use gasoline
containing methanol (methyl or wood alcohol) that does not also contain
cosolvents and corrosion inhibitors for methanol. Never use gasoline
containing more than 5% methanol, even if it has cosolvents and corrosion
inhibitors.
NOTE:
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Fuel system damage or engine performance problems resulting from the use
of such fuels are not covered under Power Equipment Warranties. Honda
cannot endorse the use of fuels containing methanol since evidence of their
suitability is as yet incomplete.
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Before purchasing fuel from .an unfamiliar station, try to confirm whether
the fuel contains alcohol, and to what percentage. If you notice any
undesirable operating symptoms after using a gasoline that contains
alcohol, or one that you think contains alcohol, switch to a gasoline that
you know does not contain alcohol.
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