Replace it if necessary.

Inner Tube Inspection
Spring Tension InspectionThrottle Body Assy Installation
Apply a thin coat of grease to the throttle cable lower ends.
Fit the accelerator cable end [A] and the decelerator cable
end [B] into the throttle pulley.
Install the clamp [C] securely.
Install the throttle body assy holder clamp bolt heads [A]
outside as shown in the figure.
...
Rear Shock Absorber Inspection
Remove the rear shock absorber (see Rear Shock Absorber
Removal).
Visually inspect the following items.
Smooth Stroke
Oil Leakage
Crack or Dent
If there is any damage to the rear shock absorber, replace
it.
Visually inspect the rubber bushing [A].
If it show any signs o ...
Radiator and Cooling Fan
Check the radiator fins for obstruction
by insects or mud. Clean off
any obstructions with a stream of
low-pressure water.
WARNINGThe cooling fan spins at high
speed and can cause serious
injuries. Keep your hands and
clothing away from the cooling
fan blades at all times.
...