Checking The Piston Pins - Yamaha FZS1000N Service Manual

CRANKCASE
2. Install:
piston ring
(into the cylinder)
NOTE:
Level the piston ring in the cylinder with the pis-
ton crown as shown.
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
0.32 X 0.44 mm
(0.010 X 0.020 in)
2nd ring
0.43 X 0.58 mm
(0.017 X 0.023 in)
Oil ring
0.10 X 0.35 mm
(0.004 X 0.014 in)
EAS00266

CHECKING THE PISTON PINS

The following procedure applies to all of the pis-
ton pins.
1. Check:
piston pin
Blue discoloration/grooves ! Replace the
piston pin and then check the lubrication sys-
tem.
2. Measure:
piston pin outside diameter
Out of specification ! Replace the piston
pin.
Piston pin outside diameter
16.991 X 17.000 mm
(0.6689 X 0.6693 in)
5-66
ENG