Yamaha FZ6-ST, Supplementary Service Manual

Page: 326 / 469

5-73
CONNECTING RODS AND PISTONS
ENG
CAUTION:
NOTE:
NOTE:
CHECKING THE BIG END BEARINGS
(except for CAL)
1. Measure:
S
crankshaft-pin-to-big-end-bearing clear-
ance
Out of specification
!
Replace the big end
bearings.
Crankshaft-pin-to-big-end-bearing
clearance
0.028
X
0.052 mm
(0.0011
X
0.0020 in)
The following procedure applies to all of the
connecting rods.
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.
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.
S
Do not move the connecting rod or crankshaft
until the clearance measurement has been
completed.
S
Lubricate the bolt threads and nut seats with
molybdenum disulfide grease.
S
Make sure that the “Y” mark
c
on the connect-
ing rod faces towards the left side of the crank-
shaft.
S
Make sure that the characters d on both the
connecting rod and connecting rod cap are
aligned.