Replace it if necessary.

Inner Tube Inspection
Spring Tension InspectionReporting safety defects
(For Products Sold in the United States of America, District of Columbia,
and
U.S. Territories Only)
If you believe that your vehicle has a defect which could cause a crash or
could
cause injury or death, you should immediately inform the National Highway
Traffic
Safety Administration (NHT ...
Front Forks/Rear Shock Absorber Operation Inspection
Pump the forks down and up [A] 4 or 5 times, and inspect
the smooth stroke.
If the forks do not smoothly or noise is found, inspect the
fork oil level or fork clamps (see Front Fork Oil Change in
the Suspension chapter).
Pump the rear seat down and up [A] 4 or 5 times, and
inspec ...
Air Suction Valve Inspection
Remove the air suction valve (see Air Suction Valve Removal).
Visually inspect the reeds [A] for cracks, folds, warps,
heat damage or other damage.
If there is any doubt as to the condition of the reeds, replace
the air suction valve as an assembly.
Check the reed contact areas [B] of ...