Yamaha VMX12H Supplementary Service Manual page 154

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INSPECTION A N D REPAIR
NOTE:
Measurement should be made a t a point 6.2 mm
(0.244 in) above the bottom edge of the piston.
Standard
Oversize 1
Oversize 2
3.
Measure:
clearance
Out of specification
or replace piston.
Piston Clearance
0.055
(0.0022 -0.0030
C: Cylinder bore
Piston Ring
1. Measure:
clearance
Use the Feeler Gauge
Out of
and/or rings.
2nd Ring
Size
75.905 75.955 mm
(2.9884 2.9903 in)
76.25 mm (3.002 in)
76.50 mm (3.012 in)
-
C P:
=
0.075 mm
P: Piston outside
.
specification Replace piston
Side Clearance
(0.0047 in)
0.0028 in)
-
0.02 0.06 mm
0.12 mm
(0.0008 (0.0047 in)
0.0024 in)
I
cylinder
3-30