Honda HRB215SXA User Manual download pdf (Page 54)

MAINTENANCE

EMISSION CONTROL MAINTENANCE

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. Carbon monoxide is an odorless,

colorless gas which is poisonous. While it does not contribute directly

to the formation of smog, it is deadly.

American Honda Motor Co., Inc. uses lean carburetor settings and

other systems to reduce the emissions of carbon monoxide, oxides of

nitrogen, and hydrocarbons.

Tampering and Alteration

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 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 Honda lawn mower dealer.

Hard starting or stalling after starting.

Rough idle.

Misfiring or backfiring under load.

Afterburning (backfiring).

Black exhaust smoke or high fuel consumption.

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Honda HRB215SXA User Manual Page 54