Oxygenated Fuels; Emission Control System Information - Honda GXV340 Manual Del Propietário

Oxygenated Fuels

Some conventional gasolines are being blended with alcohol or an
ether compound. These gasolines are collectively referred to as
oxygenated fuels. To m eet clean air standards, som e areas of the
United States and Canada use oxygenated fuels to help reduce
em issions.
If you use oxygenated fuel, be sure it is unleaded and m eets the
minimum octane rating requirements.
Before using an oxygenated fuel, try to confirm the fuel's contents.
Som e states/provinces require this inform ation to be posted on
the pump.
The following are the EPA approved percentages of oxygenates:
ETHANOL
(ethyl or grain alcohol) 10% by volume
You m ay use gasoline containing up to 10%
ethanol by volume. Gasoline containing
ethanol may be m arketed under the name
Gasohol.
MTBE
(methyl tertiary butyl ether) 15% by volume
You m ay use gasoline containing up to 15%
MTBE by volume.
METHANOL
(methyl or wood alcohol) 5% by volume
You m ay use gasoline containing up to 5%
m ethanol by volum e as long as it also
contains cosolvents and corrosion inhibitors
to protect the fuel system. Gasoline
containing more than 5% methanol by
volum e m ay cause starting and/or
performance problem s. It may also dam age
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 damage or performance problem s resulting from the
use of an oxygenated fuel containing m ore than the percentages
of oxygenates mentioned above are not covered under the
Distributor's Limited Warranty .
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Emission Control System Information

Source of Emissions
The combustion process produces carbon monoxide, oxides of
nitrogen, and hydrocarbons. Control of hydrocarbons and oxides
of nitrogen is very important because, under certain conditions,
they react to form photochemical smog when subjected to
sunlight. Carbon monoxide does not react in the same way, but it
is toxic.
Honda utilizes lean carburetor settings and other system s to
reduce the em issions of carbon monoxide, oxides of nitrogen, and
hydrocarbons.
The U.S., California Clean Air Acts and Environment Canada
EPA, California and Canadian regulations require all
manufacturers to furnish written instructions describing the
operation and maintenance of emission control systems.
The following instructions and procedures must be followed in
order to keep the emissions from your Honda engine within the
emission standards.
Tampering and Altering
Tam pering with or altering the em ission control system m ay
increase emissions beyond the legal lim it. Among those acts that
constitute tampering are:
Removal or alteration of any part of the intake, fuel, or exhaust
system s.
Altering or defeating the governor linkage or speed-adjusting
mechanism to cause the engine to operate outside its design
parameters.
Problems That May Affect Emissions
If you are aware of any of the following symptoms, have your
engine inspected and repaired by your servicing dealer.
Hard starting or stalling after starting.
Rough idle.
Misfiring or backfiring under load.
Afterburning (backfiring).
Black exhaust sm oke or high fuel consumption.
Replacement Parts
The emission control systems on your Honda engine were
designed, built, and certified to conform with EPA, California and
Canadian em ission regulations. We recommend the use of
genuine Honda parts whenever you have m aintenance done.
These original-design replacement parts are manufactured to the
same standards as the original parts, so you can be confident of
their perform ance. The use of replacement parts that are not of the
original design and quality m ay im pair the effectiveness of your
em ission control system .
A m anufacturer of an aftermarket part assumes the responsibility
that the part will not adversely affect em ission performance. The
manufacturer or rebuilder of the part must certify that use of the
part will not result in a failure of the engine to comply with
em ission regulations.
Maintenance
Follow the m aintenance schedule on page . Rem em ber that this
schedule is based on the assumption that your machine will be
used for its designed purpose. Sustained high-load or high-
temperature operation, or use in unusually wet or dusty conditions,
will require more frequent service.
ENGLISH
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