Honda Shadow Phantom 750, Owner'S Manual

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Programmed Fuel Injection (PGM-FI)
System
Ignition Timing Control System
Exhaust Emission Control System
Emission Control Systems
Technical Information
The PGM-FI system has four subsystems:
Air Intake, Engine Control, Fuel Control,
and Exhaust 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 is injected under all
operating conditions.
The system constantly adjusts the ignition
timing, reducing the amount of HC, CO
and NOx produced.
The exhaust emission control system
includes a secondary air injection system,
an ignition timing control system, a
PGM-FI system and two oxidation
catalytic converters.
No adjustment to these systems should be
made although periodic inspection of the
components is recommended.
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