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 playEngine sprocket removal and installation
Removal
Remove the gearshift link arm (1) from the gearshift
shaft.
Note
mark the gearshift shaft head at which the
gearshift link arm slit set for correct
reinstallation.
Remove the speed sensor (2).
Remove the engine sprocket cover (3).
Support the ...
Precautions
Precautions for engine cooling system
You can be injured by boiling fluid or steam if you open the
radiator cap when the engine is hot.
After the engine cools, wrap a thick cloth around cap and carefully
remove the cap by turning it a
quarter turn to allow pr ...
Front turn signal light removal and installation
Removal
Remove the screw.
Disconnect the front turn signal coupler (1).
Remove the turn signal light assembly (2).
Installation
Install the front turn signal light in the reverse order of
removal. ...