Yamaha Vmax VMX17C 2009 Service Manual page 363

Recommended lubricant
Engine oil
9. Install:
• Connecting rod assembly
(into the cylinder and onto the crankshaft pin)
TIP
• While compressing the piston rings with one
hand, install the connecting rod assembly into
the cylinder with the other hand.
• 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.
a
A
B
EX
FWD
EX
A. Top view
B. "Y" mark side
10.Tighten:
• Connecting rod bolts
M MMM M MMM M M MMM M M MMM M
a. Tighten the connecting rod bolts with a torque
wrench.
Connecting rod bolt
1st
20 Nm (2.0 m·kgf, 14 ft·lbf)
b. Put a mark "1" on the corner of the connecting
rod bolt "2" and the connecting rod cap "3".
CONNECTING RODS AND PISTONS
#4
#3
EX
#2
#1
EX
B
M MMM M M MMM M MMM
5-90
c. Tighten the connecting rod bolts further to
reach the specified angle.
Connecting rod bolt
Final
Specified angle 130–140°
EWA2S31014
WARNING
• When a bolt is tightened more than the
specified angle, do not loosen the bolt and
then retighten it.
Replace the bolt with a new one and per-
form the procedure again.
• If the connecting rod and cap are not flush
with each other, remove the connecting rod
bolts and big end bearing and restart from
step (1). In this case, make sure to replace
the connecting rod bolts.
ECA2S31045
NOTICE
• Do not use a torque wrench to tighten the
nut to the specified angle.
• Tighten the bolts until they are within the
specified angles.
TIP
After installation, check that the section "a" is
flush by running your finger across the surface.