If they appear damaged or deteriorated, replace them.

Balancer Adjustment
Torque LimiterFront Fork Removal (Each Fork Leg)
Loosen the front fork top plug [A] beforehand if the fork
leg is to be disassembled.
Special Tool - Top Plug Wrench (45 mm) [B]: 57001-1741
NOTE
Loosen the top plug after loosening the handlebar
clamp bolt [C] and upper front fork clamp bolt [D].
Remove:
Upper Fairing Assembly (see Up ...
Piston Wear Inspection
Measure the outside diameter [A] of each piston 5 mm
(0.20 in.) [B] up from the bottom of the piston at a right
angle to the direction of the piston pin.
If the measurement is under service limit, replace the piston.
Piston Diameter
Standard: 75.959 75.974 mm
(2.9905 2.9911 in.)
...
High Speed Compression Damping Adjustment
Turn the high speed compression
damping force adjuster clockwise to
increase damping force or counterclockwise
to decrease it.
NOTICE
Do not turn the compression
damping force adjuster beyond
the fully seated position or the
adjusting mechanism may be
damaged.
A. Compression Da ...