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 inspectionCrankcase breather (pcv) hose / reed
valve / cover removal and installation
Removal
Lift and support the fuel tank with the prop stay.
Refer to “fuel tank removal and installation” in section 1g .
Remove the air cleaner box. Refer to “air cleaner box removal and
installation” in section 1d .
Disconnect the crankcase breather (pcv) hose (1).
...
Rear wheel removal
Place the motorcycle on the
side stand.
Remove the cotter pin 1.
Remove the axle nut 2.
Warning
A hot muffler can burn you.
The muffler will be hot enough
to burn you for some time after
stopping the engine.
Wait until the muffler cools to
avoid bur ...
Engine assembly installation
Install the engine in the reverse order of engine removal.
Pay attention to the following points:
before installing the engine, install the collars (1).
Before installing the engine, install the engine
mounting thrust adjusters (2).
Gradually raise the rear side of ...