Yamaha SRX700D, Service Manual

Page: 278 / 497

5-13
ENG
CYLINDER HEAD AND CYLINDER
SDN5200
SDN5210
SDN5220
SDN5230
10. Install:
•
Piston ring
(into the cylinder)
Push in the ring with the piston crown.
NOTE:
Insert the ring into the cylinder, and push it ap-
proximately 20 mm (0.8 in) into the cylinder. Push
in the ring with the piston crown so that the ring
is at right angles to the cylinder bore.
11. Measure:
•
End gap (piston rings)
Use the feeler gauge 1 .
Out of specification
→
Replace the rings as
a set.
End gap (top):
0.35 ~ 0.55 mm
(0.014 ~ 0.022 in)
End gap (2nd):
0.35 ~ 0.55 mm
(0.014 ~ 0.022 in)
a
20 mm (0.8 in)
12. Measure:
•
Outside diameter (piston pin)
a
Out of specification
→
Replace the piston
pin.
Outside diameter (piston pin)
a
:
19.995 ~ 20.000 mm
(0.7872 ~ 0.7874 in)
13. Measure:
•
Piston pin-to-piston clearance
Out of specification
→
Replace the piston.
Piston pin-to-piston clearance =
Bore size (piston pin)
b
–
Outside diameter (piston pin)
a
Piston pin-to-piston clearance =
0.009 ~ 0.015 mm
(0.000354 ~ 0.000591 in)