Yamaha YZF-R1(B) 2012 Service Manual page 331

EWA13400
WARNING
If the connecting rod bolt is tightened more
than the specified angle, do not loosen the
bolt and then retighten it. Instead, replace
the connecting rod bolt with a new one and
perform the procedure again.
ECA13950
Do not use a torque wrench to tighten the
connecting rod bolt to the specified angle.
j. After the installation, check that the section
shown "a" is flush with each other by touch-
ing the surface.
k. Remove the connecting rod and big end
bearings.
l. 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.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
CONNECTING RODS AND PISTONS
2. Select:
• Big end bearings (P1–P4)
TIP
• The numbers "A" stamped into the crank-
shaft web and the numbers "1" on the con-
necting rods are used to determine the
replacement big end bearings sizes.
• "P1"–"P4" refer to the bearings shown in the
crankshaft illustration.
For example, if the connecting rod "P
the crankshaft web "P
and "2" respectively, then the bearing size
for "P " is:
1
"P " (connecting rod) - "P
1
5 - 2 = 3 (brown)
Bearing color code
5-80
" numbers are "5"
1
" (crankshaft) =
1
1.Blue 2.Black
4.Green
" and
1
3.Brown