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 installationFront brake pad replacement
Loosen the pad mounting pins (1).
Remove the brake caliper by removing the caliper
mounting bolts (2).
Remove the pad mounting pins (1), brake pads and
spring.
Caution
do not operate the brake lever while the pads
are removed.
Note
when ...
Engine components removable with the
engine in place
Engine components which can be removed while the engine is installed on the
frame are as follows. For the installing
and removing procedures, refer to respective paragraphs describing each
component.
Center of engine
Item
Removal
Inspection
Installation
...
Cam chain tension adjuster inspection
The cam chain tension adjuster is maintained to proper
tension automatically.
Remove the cam chain tension adjuster. Refer to “engine top side
disassembly” .
Holding the cam chain tension adjuster as shown in
the figure, compress the plunger by turning the
adjuster body unt ...