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 inspectionSpecial tools and equipment
Recommended service material
Note
required service material is also described in the following.
“Rear brake components”
Special tool
...
Crankcase breather (pcv) hose inspection
Inspect the crankcase breather (pcv) hose in the
following procedures:
lift and support the fuel tank with the prop stay.
Refer to “fuel tank removal and installation” in section 1g .
Inspect the crankcase breather (pcv) hose (1) for
wear and damage.
If it is worn or damaged ...
Gearshift shaft oil seal / bearing removal and installation
Removal
Remove the gearshift shaft. Refer to “gearshift shaft / gearshift cam
plate removal and installation” .
Remove the gearshift shaft oil seal (1).
Remove the bearings (2) and (3) with the special
tools.
Special tool
(a): 09921–20210 (bearing remover
(12
mm))
...