Yamaha R6 2009, Service Manual

Page: 271 / 434

CONNECTING RODS AND PISTONS
5-62
e. Tighten the connecting rod nuts.
Refer to “INSTALLING THE CONNECTING
RODS AND PISTONS” on page 5-62.
f. Remove the connecting rod and big end
bearings.
Refer to “REMOVING THE CONNECTING
RODS AND PISTONS” on page 5-58.
g. Measure the compressed Plastigauge
®
width “e” on the crankshaft pin.
If the crankshaft-pin-to-big-end-bearing
clearance is out of specification, select
replacement big end bearings.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
2. Select:
• Big end bearings (P
1
–P
4
)
TIP
• The numbers stamped into the crankshaft
web and the numbers on the connecting rods
are used to determine the replacement big
end bearing sizes.
• P
1
–P
4
refer to the bearings shown in the
crankshaft illustration.
For example, if the connecting rod P
1
and
the crankshaft web P
1
numbers are 5 and 1
respectively, then the bearing size for P
1
is:
EAS26170
INSTALLING THE CONNECTING RODS
AND PISTONS
The following procedure applies to all of the
pistons and connecting rods.
1. Install:
• Top ring “1”
• 2nd ring “2”
• Upper oil ring rail “3”
• Oil ring expander “4”
• Lower oil ring rail “5”
TIP
Be sure to install the piston rings so that the
manufacturer’s marks or numbers “a” face up.
d
c
e
P
1
P
2
P
3
P
4
P
1
(connecting rod) - P
1
(crankshaft)
=
5 - 1 = 4 (green)
Bearing color code
1.Blue 2.Black 3.Brown
4.Green
2 1 1 2 2 1 1 1 1
P
1
P
2
P
3
P
4
5 F