MAINTENANCE
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.
The California Clean Air Act
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. 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 of the following symptoms, have your engine
inspected and repaired by your authorized Honda 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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