HONDA Outboard Motor BF150A - Manual (Page 103)

101
Emission Control System
Information
TECHNICAL AND CONSUMER INFORMATION
Source of Emissions
Tampering and Altering
PGM-FI System
Ignition Timing Control System
The U.S. and Calif ornia Clean
Air Acts
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.
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.
Alterations that would cause the
engine to operate outside its design
parameters.
Honda utilizes various systems to
reduce the emissions of carbon
monoxide, oxides of nitrogen, and
hydrocarbons.
The PGM-FI system uses sequential
multiport fuel injection. It has three
subsystems: Air Intake, Engine
Control, and Fuel Control. The
Engine Control Module (ECM) uses
various sensors to determine how
much air is going into the engine. It
then controls how much fuel to inject
under all operating conditions.
The system constantly adjusts the
ignition timing, reducing the amount
of HC, CO and NOx produced.
EPA and California regulations
require all manufacturers to furnish
written instructions describing the
operation and maintenance of
emission control systems.
The following instructions and
procedures must be followed in order
to keep the emissions from your
Honda engine within the emission
standards.
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