If they show any damage, replace it.

Caliper Fluid Seal Damage
Caliper Piston and Cylinder DamageCylinder Head Cover Installation
Replace the cylinder head cover gasket [A] with a new
one
Using a high flash-point solvent, clean off any oil or dirt
that may be on the silicone sealant coating area. Dry
them with a clean cloth.
Apply silicone sealant [B] to the cylinder head as shown
in the figure.
Sealant - Li ...
Exhaust Butterfly Valve Actuator Sensor Input Voltage Inspection
NOTE
Be sure the battery is fully charged.
Turn the ignition switch to OFF.
Remove the front seat (see Front Seat Removal in the
Frame chapter).
Remove the screws [A] and the exhaust butterfly valve
actuator temporarily with the cables installed.
Disconnect the exhaust butterf ...
Engine Oil Change
Situate the motorcycle so that it is vertical after warming
up the engine.
Remove the engine oil drain bolt [A] to drain the oil.
The oil in the oil filter can be drained by removing the filter
(see Oil Filter Replacement).
Replace the drain bolt gasket [B] with a new one.
Tighten t ...