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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,
undercertain
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 systems
to reduce the emis-
sions of carbon
monoxide,
oxides
of nitrogen,
and hydrocarbons.
The U.S. and California Clean Air Acts
EPA and California
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
Tampering
with or altering
the emission
control
system
may increase emissions
beyond
the legal limit. Among
those acts that 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 May Affect Emissions
If you are aware of any ofthe
following
symptoms,
have your engine
inspected
and repaired
by your servicing
dealer.
l
Hard starting
or stalling
after starting.
l
Rough
idle.
l
Misfiring
or backfiring
under load.
l
Afterburning
(backfiring).
l
Black exhaust
smoke or high fuel consumption.
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