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 playStarter motor disassembly and assembly
Refer to “starter motor removal and installation” .
Disassembly
Disassemble the starter motor as shown in the starter motor components
diagram. Refer to “starter motor components” .
Assembly
Reassemble the starter motor in the reverse order of
removal. Pay attention to the following points:
...
Tire condition and type
Tire condition and tire type affect
motorcycle performance. Cuts or
cracks in the tires can lead to tire
failure and loss of motorcycle
control. Worn tires are susceptible
to puncture failures and subsequent
loss of motorcycle control.
Tire wear also affects the tire profile,
changing moto ...
Throttle valve synchronization
Check and adjust the throttle valve synchronization
among four cylinders.
Start the engine and run it in idling condition
for
warming up.
Stop the warmed-up engine.
Lift and support the fuel tank. Refer to “fuel
tank
removal and installation” in section 1g (page ...