Exhaust Emission Control System; Secondary Air Injection System; Evaporative Emission Control System; Catalytic Converters - Honda CB300FA Owner's Manual

Exhaust Emission Control System
The exhaust emission contro l system includes
the fol lowing components t hat shou ld not need
adjustment, although periodic inspection by
your Honda dealer is recommended.
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PGM-FI System
The PGM-FI (programmed fuel injection) system
uses sequential multiport fuel injection, and is
comprised of air intake, engine control, fuel
contro l, and exhaust contro l subsystems.
The eng ine control module (ECM) uses sensors
to determine how much air enters the engine,
and then contro ls how much fuel to inject.
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Ignition Timing Control System .
Th e ignition timing control system adjusts the
ignition timing to reduce the amount of HC,
CO, and NOx produced.
Emission Control Systems
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Secondary Air Injection System
The secondary air injection system adds filtered
air into the exhaust gas to help improve
emission control performance.
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Catalytic Converters
The exhaust system contains one or more
catalytic converters. Catalytic converters use a
cata lyst to convert most of the harmful exhaust
gas compounds into harmless compounds.
Evaporative Emission Control System
50 STATE
(meets California)
An evaporative emissions con trol system uses a
canister filled with cha rcoal to absorb fuel vapor
from the fu el tank whi le the eng ine is off. Th e
vapor is drawn into the engine and burned
w hile riding.
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