Checking The Piston Pins - Yamaha FJR1300R Service Manual

CONNECTING RODS AND PISTONS
5 - 95
2. Install:
• piston ring
(into the cylinder)
NOTE:
@
Level the piston ring in the cylinder with the
piston crown.
a 5 mm (0.20 in)
3. Measure:
• piston ring end gap
Out of specification → Replace the piston
ring.
NOTE:
@
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
0.35 ~ 0.45 mm
(0.014 ~ 0.018 in)
<Limit>: 0.70 mm (0.028 in)
2nd ring
0.75 ~ 0.85 mm
(0.030 ~ 0.033 in)
<Limit>: 1.20 mm (0.047 in)
Oil ring
0.2 ~ 0.6 mm
(0.008 ~ 0.024 in)
EAS00266

CHECKING THE PISTON PINS

The following procedure applies to all of the
piston pins.
1. Check:
• piston pin
Blue discoloration/grooves → Replace the
piston pin and then check the lubrication
system.
ENG