Adjust the engine idle speed periodically on the engine at normal operating temperature.
To adjust the idle speed:

Engine oil and filter change
Throtile cable playCrankcase emission control system
description
The engine is equipped with a pcv system to prevent discharging crankcase
emissions into the atmosphere. Blow-by
gas in the engine is constantly drawn into the crankcase, which is returned to
the combustion chamber through the
pcv (breather) hose, air cleaner and throttle body.
...
Exterior parts construction
Upper cowling bracket
: set the punch mark to the front and upper side.
Rear view mirror cushion
: set the dent side to inside.
To frame
To headlight assembly
To sprocket cove
To side-stand bracket
...
Special tools and equipment
Recommended service material
Note
required service material is also described in the following.
“Rear brake components”
Special tool
...