Yamaha YZFR1W 2007, Service Manual

Page: 275 / 429

CRANKSHAFT
5-75
e. Tighten the connecting rod bolts.
NOTE:
Install by carrying out the following procedures
in order to assemble in the most suitable con-
dition.
NOTE:
• First, tighten the bolts to 15 Nm (1.5 m·kg, 11
ft·lb).
• Retighten the bolts to 29.4 Nm (3.0 m·kg, 21
ft·lb).
f. Replace the connecting rod bolts with new
ones.
g. Clean the connecting rod bolts.
h. After installing big end bearing, assemble
the connecting rod and connecting rod cap
once using a single unit of the connecting
rod.
i. Tighten the connecting rod bolt while
checking that the sections shown “a” and
“b” are flush with each other by touching
the surface.
• Side machined face “a”
• Thrusting faces (4 places at front and rear)
“b”
NOTE:
To install the big end bearing, care should be
taken not to install it at an angle and the posi-
tion should not be out of alignment.
j. Loosen the connecting rod bolt, remove the
connecting rod and connecting rod cap and
install these parts to the crankshaft with the
big end bearing kept in the current condi-
tion.
k. Tighten the connecting rod bolts.
CAUTION:
EC2D1082
Tighten the connecting rod bolts using the
plastic-region tightening angle method.
l. Clean the connecting rod bolts.
m. Tighten the connecting rod bolts.
n. Put a mark “1” on the corner of the con-
necting rod bolt “2” and the connecting rod
“3”.
o. Tighten the bolt further to reach the speci-
fied angle (150
°
).
Connecting rod bolt
29.4 Nm (3.0 m·kg, 21 ft·lb)
Connecting rod bolt
20 Nm (2.0 m·kg, 14 ft·lb)
+150
°