User's Manual

EMISSION CONTROL SYSTEM
Source of Emissions
The combustion process produces carbon monoxide, oxides of nitro-
gen, 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 utilizes lean carburetor settings and other systems to reduce
the emissions of carbon monoxide, oxides of nitrogen, and hydrocar-
bons.
The California Clean Air Act
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 mech-
anism to cause the engine to operate outside its design parameters.
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