Honda F220 Owner's Manual page 54

TECHNICAL & CONSUMER INFORMATION
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.
Replacement Parts
The emission control systems on your new Honda engine were designed,
built, and certified to conform with EPA and California emission regulations.
We recommend the use of Honda Genuine 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 emission
control system.
A manufacturer of an aftermarket part assumes the responsibility that the
part will not adversely affect emission 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
Follow the Maintenance Schedule on page 24. Remember that 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.
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