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 playDTC “c42” (p1650): ig switch circuit
malfunction
Detected condition and possible cause
Detected condition
Possible cause
Ignition switch signal is not input to the ecm.
Ignition system circuit open or short.
Ecm malfunction.
When the id agreement is not verified.
Ecm does not re ...
Air cleaner
The air cleaner element must be
kept clean to provide good engine
power and g1as mileage. If you use
your motorcycle under normal
low-stress conditions, you should
service the air cleaner at the intervals
specified. If you ride in dusty,
wet, or muddy conditions, you will
need to inspect the ...
Horn inspection
Note
if the horn sound condition is normal, it is not
necessary to inspect the horn button
continuity.
Horn button inspection
Remove the air cleaner box. Refer to “air cleaner box removal and
installation” in section 1d .
Disconnect the left handlebar switch lead ...