Visually inspect the isc valve if necessary.

Throttle body inspection and cleaning
Throttle valve synchronizationExcv cable removal and installation
Removal
Turn the ignition switch off.
Remove the front seat. Refer to “exterior parts
removal and installation” in section 9d (page 9d-
6).
Remove the left side cowling. Refer to “exterior parts removal and
installation” in section 9d .
Connect the special tool (mo ...
Piston and piston ring inspection
Refer to “piston ring removal and installation” .
Piston diameter
Measure the piston diameter using the micrometer at 15
mm (0.6 In) “a” from the skirt end. If the piston diameter
is less than the service limit, replace the piston.
Special tool
(a): 09900–20203 (micrometer (50 –
75 mm))
Pis ...
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.
...