If the measurement is under service limit, replace the piston.

Piston Diameter
Standard: 75.959
75.974 mm
(2.9905
2.9911 in.)
Service Limit: 75.81 mm (2.985 in.)
Cylinder (Upper Crankcase) Wear Inspection
Piston Ring, Piston Ring Groove Wear InspectionWindshield
Windshield Removal
Remove:
Bolts [A] and Washers
Windshield [B]
Windshield Installation
Be sure to install the wellnuts [A] and the washers.
Tighten:
Torque - Windshield Mounting Bolts: 1.2 N·m (0.12 kgf·m,
11 in·lb)
...
Multifunction Meter
A. Multifunction Display
Odometer
Trip Meters
Current Mileage
Average Mileage
Fuel consumption
Stop Watch
B. Speedometer
C. Gear Position Indicator
D. Power Mode Indicator
E. S-KTRC Mode Indicator
F. Warning Symbols
G. Lap Counter/Coolant /
Intake Air Temperature
Meter
...
Regulator/Rectifier Inspection
Remove:
Upper Fairing Assembly (see Upper Fairing Assembly
Removal in the Frame chapter)
Right Inner Fairing (see Inner Fairing Removal in the
Frame chapter)
Bolts [A]
Regulator/Rectifier [B]
Set the hand tester to the × 1 kΩ range and make the
measurements show ...