Inspect the camshaft sprocket in the following procedures:
If they are worn or damaged, replace the sprocket/ camshaft assembly and cam chain as a set.

Camshaft inspection
Cam chain tension adjuster inspectionPrecautions
Precautions for exhaust system
To avoid
the risk of being burned, do not touch the exhaust system when the
system is hot. Any
service on the exhaust system should be performed when the system is
cool.
Caution
make sure that the exhaust pipes and muffler ...
Throttle cable removal and installation
Removal
Remove the air cleaner box. Refer to “air cleaner box removal and
installation” .
Remove the right handlebar switch box. Refer to “handlebar removal and
installation” in section 6b .
Remove the throttle cables as shown in the cable routing diagram. Refer
to “thro ...
Starting the engine
Before attempting to start the
engine, make sure:
The transmission is in neutral.
The engine stop switch is in
the "" position.
Note: this motorcycle has a
starter interlock system for the
ignition and starter circuit. The
engine can only be started if:
  ...