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 playFront suspension adjustment
After installing the front fork, adjust the spring pre-load
and two kinds of damping force as follows:
Adjust the
left and right front forks to the
same setting.
Spring pre-load adjustment
Turn the spring pre-load adjuster (1) counterclockwise
fully. From that position (softe ...
Specifications
Service data
Thermostat + radiator + fan + coolant
Tightening torque specifications
Note
the specified tightening torque is described in the following.
“Water hose routing diagram” “water pump components” “water
pump construction”
Reference: for the tig ...
Cam chain guide inspection
Inspect the cam chain guide in the following procedures:
remove the cam chain guides. Refer to “cam chain guide / cam chain
tensioner removal and installation” .
Check the contacting surface of the cam chain
guides. If it is worn or damaged, replace it with a new
one.
...