Yamaha XV1600A1999, Service Manual

Page: 285 / 460

5-57
CYLINDERS AND PISTONS
ENG
Piston ring end gap
Top ring
0.30 0.45 mm
<Limit>: 0.65 mm
2nd ring
0.30 0.45 mm
<Limit>: 0.80 mm
Oil ring
0.2 0.7 mm
EAS00266
CHECKING THE PISTON PINS
The following procedure applies to all of the pis-
ton pins.
1. Check:
piston pin
Blue discoloration / grooves
Replace the
piston pin and then check the lubrication sys-
tem.
2. Measure:
piston pin outside diameter
a
Out of specification Replace the piston
pin.
Piston pin outside diameter
21.991 22.000 mm
<Limit>: 21.971 mm
3. Measure:
piston pin bore diameter (in the piston) b
Our of specification Replace the piston
pin.
Piston pin bore diameter (in the
piston)
22.004 22.015 mm
<Limit>: 22.045 mm