Checking The Piston Rings - Yamaha XV1700PCRC Service Manual

CYLINDERS AND PISTONS
Standard
d. If out of specification, replace the piston and
piston rings as a set.
e. Calculate the piston-to-cylinder clearance
with the following formula.
Piston-to-cylinder clearance =
Cylinder bore "C" -
Piston skirt diameter "P"
Piston-to-cylinder clearance
f. If out of specification, replace the cylinder,
and the piston and piston rings as a set.
L LLL L LLL L
EAS00263

CHECKING THE PISTON RINGS

1. Measure:
• piston ring side clearance
Out of specification → Replace the piston
and piston rings as a set.
NOTE:
_
Before measuring the piston ring side clear-
ance, eliminate any carbon deposits from the
piston ring grooves and piston rings.
Piston ring side clearance
5 - 52
ENG
Piston size "P"
96.960 ~ 96.975 mm
(3.8173 ~ 3.8179 in)
0.025 ~ 0.050 mm
(0.001 ~ 0.002 in)
<Limit>: 0.15 mm (0.006 in)
L LLL L L LLL L L LLL L
Top ring
0.03 ~ 0.08 mm
(0.0012 ~ 0.0031 in)
<Limit>: 0.12 mm (0.0047 in)
2nd ring
0.03 ~ 0.07 mm
(0.0012 ~ 0.0028 in)
<Limit>: 0.12 mm (0.0047 in)
L LLL L LLL