Honda BF9.9A Owner's Manual page 16

OXYGENATED FUELS
Some conventional asolines are being blended with alcohol or an
ether compound. T ese I! gasolines are collectively referred to as
oxygenated fuels. To meet clean air standards, some areas of the
United States and Canada use oxygenated fuels to help reduce
emissions.
If you use an oxygenated fuel, be sure it is unleaded and meets the
mmimum octane rating requirement.
Before using an oxygenated fuel, try to confirm the fuel's contents.
Some states/provinces require this information to be posted on the
pump.
The following are the EPA approved percentages of oxygenates:
ETHANOL -
MTBE
METHANOL -
(ethyl or grain alcohol) 10% by volume
You may use
by volume. 8
asoline containing up to 10% ethanol
asoline containin
marketed under the name "Gas0 I!
ethanol may be
01".
(Methyl Tertiary Butyl Ether) 15% by volume
You may use gasohne containing up to 15% MTBE
by volume.
(methyl or wood alcohol) 5% by volume
You may use gasoline containing up to 5%
methanol by volume, as long as it also contains
cosolvents and corrosion inhibitors to protect the
fuel system. Gasoline containing more than 5%
methanol by volume may cause starting and/or
performance problems. It may also damage metal,
rubber, and plastic parts of your fuel system.
If you notice any undesirable operating symptoms, try another service
station, or switch to another brand of gasoline.
Fuel system dama e or performance problems resulting from the use
of an oxygenate CB fuel containing more than the percentages of
oxygenates mentioned above are not covered under warranty.
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