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 playRear brake light switch inspection
Inspect the rear brake light switch in the following
procedures:
lift and support the fuel tank. Refer to “fuel tank
removal and installation” in section 1g (page 1g-
9).
Disconnect the rear brake light switch lead wire
coupler (1).
Inspect the rear brake light swi ...
Generator inspection
Generator coil resistance
Remove the left side cowling. Refer to “exterior parts removal and
installation” in section 9d .
Disconnect the generator coupler (1).
Measure the resistance between the three lead
wires.
If the resistance is out of specified value, replace the
...
Throttle cable removal and installation
Removal
Remove the air cleaner box. Refer to “air cleaner box removal and
installation” .
Remove the right handlebar switch box. Refer to “handlebar removal and
installation” in section 6b .
Remove the throttle cables as shown in the cable routing diagram. Refer
to “thro ...