The rings should fit perfectly parallel to groove surfaces.
If not, replace the piston and all the piston rings.

Piston Ring/Groove Clearance Standard:
Top 0.03
0.07 mm (0.0012
0.0028 in.)
Second 0.03
0.06 mm (0.0012
0.0024 in.)
Service Limit:
Top 0.17 mm (0.0067 in.)
Second 0.16 mm (0.0063 in.)
Piston Wear Inspection
Piston Ring Groove Width InspectionMeter Unit Inspection
Remove the meter unit (see Meter Unit Removal).
[1] Battery (+)
[2] Fuel Reserve Switch
[3] Ground (–)
[4] Unused
[5] Right Turn Signal Indicator Light (LED) (+)
[6] Left Turn Signal Indicator Light (LED) (+)
[7] High Beam Indicator Light (LED) (+)
[8] Neutral Indicator Light (LED) ( ...
Exploded View
25. “1T” marked side faces up.
26. “T2” marked side faces up.
27. Hollow mark faces exhaust side.
G: Apply grease.
L: Apply a non-permanent locking agent.
LG: Apply liquid gasket.
M: Apply molybdenum disulfide grease.
MO: Apply molybdenum disulfide oil solution.
...
Parts Location
1. Timing Rotor
2. Crankshaft Sensor
3. Horn
4. Oil Pressure Switch
5. Rear Brake Light Switch
6. Oxygen Sensor (Equipped Models)
7. Alternator
8. Stator Coil
9. Gear Position Switch
10. Sidestand Switch
11. Immobilizer Amplifier (Equipped Models)
12. Radiator Fan Motor
1 ...