honda-power-equipment hht31s ユーザーズマニュアル

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TECHNICAL & CONSUMER INFORMATION
Emissions Control System Information
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 utilizes 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 Acts
EPA and California regulations require all 
manufacturers to furnish written instructions 
describing the operation and maintenance of 
emissions control systems.
The following instructions and procedures must 
be followed in order to keep the emissions from 
your Honda engine within the emissions 
standards.
Tampering and Altering
Tampering with or altering the emissions control 
system may increase emissions beyond the legal 
limit. Among those acts that constitute tampering 
are:
Removal or alteration of any part of the intake, 
fuel, or exhaust systems.
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 servicing dealer.
Hard starting or stalling after starting
Rough idle
Misfiring or backfiring under load
Afterburning (backfiring)
Black exhaust smoke or high fuel 
consumption
Replacement Parts
The emissions control systems on your new 
Honda engine were designed, built, and certified 
to conform with EPA and California emissions 
regulations. We recommend the use of genuine 
Honda parts whenever you have maintenance 
done. These original-design replacement parts 
are manufactured to the same standards as the 
original parts, so you can be confident of their 
performance. The use of replacement parts that 
are not of the original design and quality may 
impair the effectiveness of your emissions control 
system.
A manufacturer of an aftermarket part assumes 
the responsibility that the part will not adversely 
affect emissions performance. The manufacturer 
or rebuilder of the part must certify that use of the 
part will not result in a failure of the engine to 
comply with emissions regulations.
Maintenance
Follow the MAINTENANCE SCHEDULE on 
page 25. Remember this schedule is based on 
the assumption that your machine will be used for 
its designed purpose. Sustained high-load or 
high-temperature operation, or use in unusually 
wet or dusty conditions, will require more 
frequent service.