Yamaha XC50V Service Manual page 23

Piston
Piston-to-cylinder clearance
Diameter D
Height H
Piston pin bore (in the piston)
Diameter
Offset
Offset direction
Piston pin
Outside diameter
Piston rings
Top ring
Ring type
Dimensions (B × T)
End gap (installed)
Ring side clearance
2nd ring
Ring type
Dimensions (B × T)
End gap (installed)
Ring side clearance
Oil ring
Dimensions (B × T)
End gap (installed)
Ring side clearance
ENGINE SPECIFICATIONS
Item
D
T
T
T
Standard
0.010~0.035 mm
37.975~37.990 mm
H
5.0 mm
10.002~10.013 mm
0.35~0.65mm
Intake side
9.996~10.000 mm
B
Barrel
0.8 × 1.65mm
0.05~0.15 mm
0.02~0.08 mm
B
Taper
0.8 × 1.5mm
0.05~0.17 mm
0.02~0.06 mm
B
1.5 × 1.6 mm
0.2~0.7 mm
0.03~0.15 mm
2-7
SPEC
Limit
0.150mm
...
...
10.043 mm
...
...
9.976 mm
...
...
0.40mm
0.13 mm
...
...
0.52mm
0.12mm
...
...
...