Yamaha VK540EF Service Manual page 124

CYLINDER HEAD AND CYLINDER
8. Measure:
D Side clearance (piston rings)
NOTE:
Eliminate the carbon deposits from the piston
ring grooves and rings before measuring the
side clearance.
9. Install:
D Piston ring
NOTE:
Insert the ring into the cylinder, and push it
approximately 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.
10. Measure:
D End gap (piston rings)
a 20 mm (0.8 in)
5-9
Use the feeler gauge 1 .
Out of specification ! Replace the piston
and/or rings.
Side clearance (top):
0.02 X 0.06 mm
(0.00079 X 0.0024 in)
Side clearance (2nd):
0.02 X 0.06 mm
(0.00079 X 0.0024 in)
(into the cylinder)
Push in the ring with the piston crown.
Use the feeler gauge 1 .
Out of specification ! Replace the rings as a
set.
End gap (top):
0.20 X 0.40 mm
(0.008 X 0.016 in)
End gap (2nd):
0.20 X 0.40 mm
(0.008 X 0.016 in)
ENG