Yamaha Vmax VMX17C 2009 Service Manual page 359

ECA2S31044
NOTICE
Tighten the connecting rod bolts using the
plastic-region tightening angle method. Al-
ways install new bolts.
f. Clean the connecting rod bolts.
g. After installing the big end bearing, assemble
the connecting rod and connecting rod cap
without installing them onto the crankshaft.
TIP
Install by carrying out the following procedures in
order to assemble in the most suitable condition.
h. Tighten the connecting rod bolt while check-
ing that the sections shown "a" and "b" are
flush with each other by touching the surface.
Connecting rod bolt
30 Nm (3.0 m·kgf, 22 ft·lbf)
TIP
To install the big end bearing, care should be
taken not to install it at an angle and the position
should not be out of alignment.
a
b
a. Side machined face
b. Thrusting faces
i. 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 condition.
TIP
• Do not move the connecting rod or crankshaft
until the clearance measurement has been
completed.
• Make sure the "Y" mark "a" on the #1 and #3
connecting rods faces toward the left side of
the crankcase.
• Make sure the "Y" mark "a" on the #2 and #4
connecting rods faces toward the right side of
the crankcase.
CONNECTING RODS AND PISTONS
a
A
FWD
A. Top view
B. "Y" mark side
j. Tighten the connecting rod bolts.
Connecting rod bolt
1st
20 Nm (2.0 m·kgf, 14 ft·lbf)
k. Put a mark "1" on the corner of the connecting
rod bolt "2" and the connecting rod cap "3".
l. Tighten the bolt further to reach the specified
angle.
Connecting rod bolt
Final
Specified angle 130–140°
5-86
B
#4
EX
#3
EX
#2
EX
#1
EX
B