Yamaha XV19SX(C), Service Manual, Page: 357 / 494

CRANKSHAFT
5-108
d. Assemble the connecting rod halves.
NOTE:
• Do not move the connecting rod or crankshaft
until the clearance measurement has been
completed.
• Lubricate the bolts threads with molybdenum
disulfide grease.
• Make sure the projection “c” on the connecting
rod faces towards the left side of the crank-
shaft.
• Make sure the characters “d” on both the con-
necting rod and connecting rod cap are
aligned.
e. Tighten the connecting rod bolts.
WARNING
EWA12890
• Replace the connecting rod bolts with new
ones.
• Clean the connecting rod bolts.
NOTE:
The tightening procedure of the connecting rod
bolts is angle controlled, therefore tighten the
bolts using the following procedure.
f. Tighten the connecting rod bolts to the spec-
ified torque.
g. Put a mark “1” on the connecting rod bolts “2”
and the connecting rod cap “3”.
h. Tighten the connecting rod bolts further to
reach the specified angle 125–135°.
WARNING
EW1D71011
When a bolt is tightened more than the spec-
ified angle, do not loosen and then retighten
it.
Replace the bolt with a new one and perform
the procedure again.
CAUTION:
EC1D71001
• Do not use a torque wrench to tighten the
bolt to the specified angle.
• Tighten the bolt until it is at the specified
angle.
i. Remove the connecting rod and big end
bearings.
j. Measure the compressed Plastigauge®
width “e” on the crankshaft pin.
If the crankshaft-pin-to-big-end-bearing
clearance is out of specification, select re-
placement big end bearings.
T
R
.
.
Connecting rod bolt (1st)
15 Nm (1.5 m·kg, 11 ft·lb)
T
R
.
.
Connecting rod bolt (final)
Specified angle 125–135°