Use the micrometer to measure at several points around the ring.
Piston Ring Thickness Standard:
Top [A] 0.77
0.79 mm (0.0303
0.0311 in.)
Second [B] 0.78
0.79 mm
(0.0307
0.0311 in.)
Service Limit:
Top 0.70 mm (0.0276 in.)
Second 0.71 mm (0.0280 in.)

If any of the measurements is less than the service limit on either of the rings, replace all the rings.
NOTE
When using new rings in a used piston, check for uneven groove wear. The rings should fit perfectly parallel to the groove sides. If not, replace the piston.
Piston Ring Groove Width Inspection
Piston Ring End Gap InspectionWarning Indicator Light (LED)
Light (LED) Inspection
The warning indicator light (LED) [A] is used for the FI indicator,
immobilizer indicator (immobilizer equipped models),
water temperature warning indicator and oil pressure
warning indicator.
In this model, the warning indicator light (LED) (FI/immobilizer)
goes ...
Oil Filter Replacement
Drain the engine oil (see Engine Oil Change).
Remove the left lower fairing (see Lower Fairing Removal
in the Frame chapter).
Remove the oil filter [A] with the oil filter wrench [B].
Special Tool - Oil Filter Wrench: 57001-1249
Replace the filter with a new one.
Apply grease t ...
Rear Turn Signal Light Bulb Replacement
Remove the upper seat cover (see Seat Cover Removal
in the Frame chapter).
Disconnect the tail/brake light connector [A].
Turn the socket [A] counterclockwise and remove the
socket together with the bulb.
Push and turn the turn signal light bulb [A] counterclockwise
an ...