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 playStv actuator removal and installation
Refer to “throttle body disassembly and assembly” in section 1d .
Caution
never remove the stva from the throttle
body.
Isc valve inspection
Refer to “dtc “c40” (p0505 / p0506 / p0507): isc valve circuit malfunction”
in section 1a .
Isc valve removal and installation
Refer t ...
Air cleaner element removal and installation
Removal
Lift and support the fuel tank. Refer to “fuel tank
removal and installation” in section 1g (page 1g-
9).
Remove the air cleaner box cover (1).
Remove the air cleaner element (2).
Installation
Installation is in the reverse order of removal. ...