Emission Control System
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 Motor Co., Ltd, utilizes lean carburetor settings and other
systems to reduce the emissions of carbon monoxide, oxides of
nitrogen, and hydrocarbons.
The California Clean Air Act
California regulations require all manufacturers to furnish written in-
structions 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.
Proper Maintenance is The Owner’s Responsibility
Replacement Parts
The emission control systems on your new Honda were designed,
built, and certified to conform with the California regulations. Honda
recommends only the use of new, genuine Honda parts or their
equivalent. The use of other replacement parts which are not of
equivalent quality may impair the effectiveness of your emission
control system.
Maintenance
Follow the maintenance schedule on page 28 . Remember 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.
Tampering and Altering
Tampering or altering the emission control system may increase
emissions beyond the legal limit. Among those acts presumed to
constitute tampering are:
l Removal or alteration of any part of the intake, fuel, or exhaust
systems.
l Altering or defeating the governor linkage or speed-adjusting
mechanism to cause the engine to operate outside its design
parameters.
Problems That Mav Affect Emissions
If you are aware of any of the following symptoms, have your
en ine inspected and repaired by your authorized Honda dealer:
l I? ard starting or stalling after starting.
l Rough idle.
l Misfiring or backfiring under load.
l After burning (backfiring).
l Black exhaust smoke or high fuel consumption.
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