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• Carbon monoxide poisoning from engine exhaust. Be sure there is adequate ventilation whenever you
operate the engine.
• Burns from hot parts. Let the engine and exhaust system cool before you touch it to prevent burns.
• Injury from moving parts. Wear appropriate clothing, tie back long hair, and stay alert around the generator
to prevent injury from moving parts.
Read the instructions before you begin, and make sure you have the tools and skills required.
Your authorized service center knows your generator best and is fully equipped to do maintenance and repair.
To ensure the best quality and reliability, use only new genuine parts or their equivalents for repair or
replacement.
CAUTION:
To reduce the possibility of fire or explosion, be careful when working around gasoline. Use
only a nonflammable solvent, not gasoline, to clean parts. Keep tobacco products, sparks,
and flames away from all fuel related parts.
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.
A Honda engine powers your HITACHI Generator. Honda uses 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 emission 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 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 service center.
• 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 emission control systems on your Honda Engine were designed, built, and certified, to conform with EPA
and California Emission Regulations. We recommend the use of genuine Honda parts whenever you have
engine 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 emission regulations.
MAINTENANCE SCHEDULE
The Periodic Maintenance Schedule below lists basic maintenance intervals for the engine and generator.
Please read the detailed maintenance procedures for the engine described in the Owner's Manual.
NEW MACHINES
Change the engine oil and replace the air filter after the first 20 hours of operation.
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