Yamaha YZF-R1S Service Manual - Eng
5-82
CONNECTING RODS AND PISTONS
ENG
2. Measure:
Spiston pin outside diameter
a
Out of specification
! Replace the piston
pin.
Piston pin outside diameter
16.991
X 17.000 mm
(0.6689
X 0.6693 in)
3. Measure:
Spiston pin bore inside diameter
b
Out of specification
! Replace the piston.
Piston pin bore inside diameter
17.002
X 17.013 mm
(0.6694
X 0.6698 in)
4. Calculate:
Spiston-pin-to-piston clearance
Out of specification
! Replace the piston pin
and piston as a set.
Piston-pin-to-piston clearance =
Piston pin bore size –
Piston pin outside diameter
Piston-pin-to-piston clearance
0.002
X 0.022 mm
(0.0001
X 0.0009 in)
CHECKING THE BIG END BEARINGS
1. Measure:
Scrankshaft-pin-to-big-end-bearing clear-
ance
Out of specification
! Replace the big end
bearings.
Crankshaft-pin-to-big-end-bearing
clearance
0.034
X 0.058 mm
(0.0013
X 0.0023 in)
The following procedure applies to all of the
connecting rods.