Refer to “rear sprocket / rear sprocket mounting drum removal and installation” .
Dust seal
Inspect the dust seal for wear or damage. If any damage is found, replace the dust seal with a new one.

Bearing
Inspect the play of the sprocket mounting drum bearing by hand while it is in the drum. Rotate the inner race by hand to inspect for abnormal noise and smooth rotation.
Replace the bearing if there is anything unusual.

Engine sprocket and rear sprocket
Inspect the sprocket teeth for wear. If they are worn as shown, replace the engine sprocket, rear sprocket and drive chain as a set.

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Wheel damper
Inspect the dampers for wear and damage. Replace the dampers if there is anything unusual.

Drive chain
Refer to “drive chain inspection and adjustment” in section 0b .
Rear sprocket / rear sprocket mounting drum removal and installation
Sprocket mounting drum dust seal / bearing removal and installationSpecial tools and equipment
Recommended service material
Note
required service material is also described in the following.
“Front brake master cylinder components” “rear brake master
cylinder components” “rear brake pedal construction”
Special tool
...
Water pump disassembly and assembly
Refer to “water pump removal and installation” .
Disassembly
Remove the air bleeder bolt (1) if necessary.
Remove the water pump case screws.
Remove the o-ring (2).
Hold the impeller (3) with water pump pliers and
remove the impeller securing bolt (4).
Remove t ...
Oil pressure indicator inspection
Inspect the oil pressure indicator in the following
procedures:
Note
before inspecting the oil pressure switch, check if the engine oil level
is correct. Refer to “engine oil and filter replacement” in section 0b .
Remove the left side cowling. Refer to “exterior parts remov ...