NOTICE
Do not remove the subthrottle valve actuator [A] since it has been adjusted and set with precision at the factory.
Never drop the throttle body assy especially on a hard surface. Such a shock to the subthrottle valve actuator can damage it.

Subthrottle Valve Actuator InspectionAir Switching Valve Installation
Install the air switching valve [A] with hose [B] as shown
in the figure.
Front [C]
Left Side View [D]
White Paint [E]
Air Switching Valve Operation Test
Refer to the Air Suction System Damage Inspection in the
Periodic Maintenance chapter.
Air Switching Valve Unit Test ...
Catalytic Converter
This motorcycle is equipped with a
catalytic converter in the exhaust system.
The converter reacts with carbonmonoxide,
hydrocarbons and nitrogen
oxides to convert them into carbon
dioxide, water, nitrogen and oxygen resulting
in much cleaner exhaust gases
to be discharged into the atmosphe ...
Drive Chain Wear Inspection
Remove the chain cover (see Drive Chain Removal/Installation
in the Final Drive chapter).
Rotate the rear wheel to inspect the drive chain for damaged
rollers, and loose pins and links
If there is any irregularity, replace the drive chain.
Lubricate the drive chain if it appears dry.
...