Yamaha VX500SXBC Service Manual page 40

P
CYLINDER HEAD AND CYLINDER
2nd step:
3rd step:
Piston-to-cylinder clearance =
–36–
S Measure the piston skirt diameter "P"
with a micrometer from distance a .
a 500: 25 mm (0.98 in)
700: 15 mm (0.59 in)
from the piston bottom edge.
Piston size P
500: 67.930 X 67.935 mm
(2.6745 X 2.6746 in)
Standard
700: 70.425 X 70.430 mm
(2.7727 X 2.7728 in)
S If out of specification, replace piston
and piston rings as a set.
S Calculate the piston-to-cylinder clear-
ance with the following formula:
Cylinder bore "C" –
Piston skirt diameter "P"
S If out of specification, rebore or replace
cylinder, and replace piston and piston
rings as a set.
Piston-to-cylinder clearance:
500: 0.095 X 0.100 mm
(0.0037 X 0.0039 in)
Limit 0.11 mm (0.0043 in)
700: 0.070 X 0.075 mm
(0.0028 X 0.0030 in)
Limit 0.1 mm (0.0039 in)
ENG