If they appear damaged or deteriorated, replace them.

Balancer Adjustment
Torque LimiterBrake Disc Wear Inspection
Measure the thickness of each disc [A] at the point where
it has worn the most.
If the disc has worn past the service limit, replace it.
Measuring Area [B]
Brake Disc Thickness Standard:
Front 5.3 5.7 mm (0.21
0.22 in.)
Rear 4.8 5.2 mm (0.19
0.20 in.)
Service Limit:
Front 5. ...
Fuses
Fuses are arranged in the fuse boxes
located under the passenger’s seat and
in the left fairing. The main fuse is
located under the passenger’s seat.
If a fuse fails during operation, inspect
the electrical system to determine
the cause, and then replace it with
a new fuse of proper amp ...
Charging Condition Inspection
Battery charging condition can be checked by measuring
battery terminal voltage with a digital voltmeter [A].
Remove the seat (see Seat Removal in the Frame chapter).
Disconnect the battery terminals.
NOTICE
Be sure to disconnect the negative (–) cable first.
Measure the battery ...