If they appear damaged or deteriorated, replace them.

Balancer Adjustment
Torque LimiterClock
To adjust hours and minutes, do the
followings while the motorcycle is at a
stop.
Turn the ignition switch to “ON”.
Display the odometer in the multifunction
display. Refer to the “Multifunction
Display” item in this section.
Push the lower button for more than
2 seconds. Bot ...
Wheel Alignment Inspection
Check that the notch [A] on the alignment indicator [B]
aligns with the same swingarm mark or position [C] that
the other side alignment indicator notch aligns with.
If they do not, adjust the chain slack and align the wheel
alignment (see Drive Chain Slack Adjustment).
NOTE
Wheel align ...
Hub Bearing Installation
Before installing the hub bearings, blow any dirt or foreign
particles out of the hub with compressed air to prevent
contamination of the bearings.
Replace the bearings with new ones.
Install the bearings by using the bearing driver set which
does not contact the bearing inner race.
...