Replace it if necessary.

Inner Tube Inspection
Spring Tension InspectionDrive Chain Removal/Installation
NOTE
Since the drive chain is installed through the swingarm,
The chain can not be removed other than by cutting it.
Prepare the new link pin, link plate, grease seals, and
tools for rejoining the chain.
Remove:
Bolts [A]
Front Footpeg Bracket [B]
Remove:
Bolts [A]
Chain Cover [B]
...
Location of labels
All warning labels which are on your
vehicle are repeated here. Read labels
on your vehicle and understand them
thoroughly. They contain information
which is important for your safety and
the safety of anyone else who may operate
your vehicle. Therefore, it is very
important that all warning ...
Air Intake Duct Disassembly
(Other than US, CA and CAL Models)
Remove:
Air Intake Duct (see Air Intake Duct Removal)
Seal [A] and Screen [B]
Turn the air intake valve actuator [C] counterclockwise
(90В°).
Remove the shaft [A] of the air intake valve actuator.
Remove:
Pad [A]
Screws [B]
Air Intake Valve [C]
...