Yamaha XVZ13TF 1999, Service Manual

Page: 235 / 501

4-91
CONNECTING RODS AND PISTONS
ENG
NOTE:
NOTE:
Piston ring side clearance
Top ring
0.03 0.07 mm
<Limit>: 0.12 mm
2nd ring
0.02 0.06 mm
<Limit>: 0.12 mm
2. Install:
piston ring
(into the cylinder)
Level the piston ring into the cylinder with the
piston crown as shown.
a 40 mm
3. Measure:
piston ring end gap
Out of specification
Replace the piston
ring.
The oil ring expander spacer’s end gap cannot
be measured. If the oil ring rail’s gap is exces-
sive, replace all three piston rings.
Piston ring end gap
Top ring
0.20 0.35 mm
<Limit>: 0.55 mm
2nd ring
0.35 0.50 mm
<Limit>: 0.8 mm
Oil ring
0.3 0.9 mm
Piston ring oversize
Top and 2nd piston rings
The size of the top and 2nd oversize piston
rings is stamped on the top of each ring.
Oversize 2 0.25 mm
Oversize 4 0.50 mm