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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.
The U.S. and California
Clean
Air Act
EPA and California
regulations
require all manufacturers
to furnish
written instruction describing
the operation
and maintenance
of
emission
control systems.
The following
instructions
and procedures
must be followed
in order to
keep the Honda engine emissions
within the emission
standards.
Tampering
and Altering
Tampering
with or altering
the emission
control system
may increase
emissions
beyond the legal limit. Some acts that constitute
tampering:
•
Removal
or alteration
of any part of intake, fuel, or exhaust
system.
•
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 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.
62
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