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TECHNICAL & CONSUMER INFORMATION
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 uses lean carburetor settings and other systems to reduce the
emissions of carbon monoxide, oxides of nitrogen, and hydrocarbons.
Problems That May Affect Emissions
If you are aware of any of the following symptoms, have your engine
inspected and repaired by your authorized Honda servicing dealer.
• Hard starting or stalling after starting
• Rough idle
• Misfiring or backfiring under load
• Afterburning (backfiring)
• Black exhaust smoke or high fuel consumption
Replacement Parts
We recommend the use of genuine Honda parts whenever you have
maintenance done. These original-design replacement parts are
manufactured to the same standards as the original parts, so you can
be confident of their performance. The use of replacement parts that
are not of the original design and 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 operation will require
more frequent service.
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