honda-automobiles hrr216vxa ユーザーズマニュアル

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TECHNICAL AND CONSUMER INFORMATION
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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, 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., California Clean Air Act and Environment Canada
EPA, California and Canadian 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 are:
Removal or alteration of any part of intake, fuel, or exhaust system.
Altering or defeating the 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