Yamaha XT1200Z(Z) 2010, Service Manual, Page: 392 / 616

CRANKSHAFT AND BALANCER
5-97
For example, if the lower crankcase J
1
and
crankshaft web J
1
numbers are 4 and 1 re-
spectively, then the bearing size for J
1
is:
EAS23P1045
CHECKING THE CONNECTING RODS
1. Measure:
• Crankshaft-pin-to-big-end-bearing clearance
Out of specification
→
Replace the big end
bearings.
▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼▼▼
The following procedure applies to all of the
connecting rods.
NOTICE
ECA13930
Do not interchange the big end bearings and
connecting rods. To obtain the correct
crankshaft-pin-to-big-end-bearing clear-
ance and prevent engine damage, the big
end bearings must be installed in their origi-
nal positions.
a. Clean the big end bearings, crankshaft pins,
and the inside of the connecting rod halves.
b. Install the big end upper bearing into the con-
necting rod and the big end lower bearing into
the connecting rod cap.
TIP
Align the projections “a” on the big end bearings
with the notches “b” in the connecting rod and
connecting rod cap.
c. Put a piece of Plastigauge® “1” on the crank-
shaft pin.
d. Assemble the connecting rod halves.
TIP
• Do not move the connecting rod or crankshaft
until the clearance measurement has been
completed.
• Lubricate the bolt threads and nut seats with
molybdenum disulfide oil.
• Make sure the “Y” mark “c” on the connecting
rod faces towards the left side of the crank-
shaft.
J
1
(crankcase) - J
1
(crankshaft web)
=
4 - 1 = 3 (brown)
Bearing color code
1.Blue 2.Black 3.Brown 4.Green
5.Yellow
Oil clearance
0.029–0.053 mm (0.0011–0.0021
in)
J1 J2 J3
J1 J2 J3
A
J1 J2 J3
B
1