Yamaha R1 Series 2015, Service Manual

Page: 419 / 704

CONNECTING RODS AND PISTONS
5-78
WARNING
EWA16610
If the bolt is tightened more than the speci-
fied angle, do not loosen the bolt and then re-
tighten it. Instead, replace the bolt with a new
one and perform the procedure again.
k. After the installation, check that the section
shown “a” is flush with each other by touching
the surface.
l. Remove the connecting rod and big end
bearings.
m. Measure the compressed Plastigauge®
width on the crankshaft pin. If the crankshaft-
pin-to-big-end-bearing clearance is out of
specification, select replacement big end
bearings.
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2. Select:
•
Big end bearings (P
1
–P
4
)
TIP
• The numbers “A” stamped into the crankshaft
web and the numbers “1” on the connecting
rods are used to determine the replacement
big end bearings 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 6 and 2
respectively, then the bearing size for “P
1
” is:
EAS30751
INSTALLING THE CONNECTING ROD AND
PISTON
The following procedure applies to all of the con-
necting rods and pistons.
180˚
a
“P
1
” (connecting rod) - “P
1
” (crankshaft) = 6 - 2 =
4 (green)
Bearing color code
1. Blue 2. Black 3. Brown 4.
Green 5. Yellow 6. Pink
P
1
P
2
P
4
P
3
P
1
P
2
P
3
P
4
1