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 playStorage procedure
If your motorcycle is to be left
unused for an extended period of
time, it needs special servicing
requiring appropriate materials,
equipment and skill. For this reason,
suzuki recommends that you
trust this maintenance work to
your suzuki dealer. If you wish to
service the machine for stora ...
Crankcase 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.
...
Spark plug inspection and cleaning
Inspect spark plug
every 6 000 km (4 000 miles, 12 months)
Heat range
Remove the spark plugs. Refer to “ignition coil and spark plug removal
and installation” in section 1h .
Check spark plug heat range by observing electrode
color. If the electrode of the spark plug is wet
appe ...