Replace it if necessary.

Inner Tube Inspection
Spring Tension InspectionFlap and Rear Fender Rear Removal
Remove:
Front and Rear Seat (see Front/Rear Seat Removal)
Seat Covers (see Seat Cover Removal)
Vehicle-down Sensor Connector [A]
Screws [B]
Clear the seat lock cable [C] from the seat lock unit [D].
Take off the seat lock unit and the bracket.
Remove:
Bolts [A] (Both Sides ...
Balancer Adjustment
Remove the left lower fairing (see Lower Fairing Removal
in the Frame chapter).
Start the engine and warm it up thoroughly.
Adjust the balancer gear backlash with the engine idling.
The amount of backlash can be changed by turning the
balancer shaft which has eccentric journals.
St ...
Turn Signal Relay Inspection
Remove the battery (see Battery Removal).
Take the turn signal relay [A] off the rear fender.
Disconnect the connector [B].
Connect one 12 V battery and turn signal lights as indicated
in the figure, and count how many times the lights
blink for one minute.
Turn Signal Relay ...