Yamaha MM600D Service Manual page 125

CYLINDER HEAD AND CYLINDER
9. Measure:
•
NOTE:
Eliminate the carbon deposits from the piston
ring grooves and rings before measuring the side
SEJ5170
clearance.
10. Install:
•
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
SEJ5180
is at right angles to the cylinder bore.
11. Measure:
•
SEJ5190
a
20 mm (0.8 in)
5-10
ENG
Side clearance (piston rings)
Use the feeler gauge 1.
Out of specification → Replace the piston
and/or rings.
Side clearance (top):
0.02 ~ 0.06 mm
(0.0008 ~ 0.0024 in)
Side clearance (2nd):
0.02 ~ 0.06 mm
(0.0008 ~ 0.0024 in)
Piston ring
(into the cylinder)
Push in the ring with the piston crown.
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)