Yamaha RX10K, Supplementary Service Manual

Page: 321 / 523

5-54
CRANKCASE
ENG
CAUTION:
NOTE:
NOTE:
Measurement steps:
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.
S
Clean the big end bearings, crankshaft pins,
and bearing portions of the connecting rods.
S
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.
S
Put a piece of Plastigauge

1 on the crank-
shaft pin.
S
Assemble the connecting rod halves.
S
Do not move the connecting rod or crankshaft
until the clearance measurement has been
completed.
S
Apply molybdenum disulfide grease onto the
bolts, threads, and nut seats.
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.
S
Tighten the connecting rod nuts.
Nut (connecting rod):
20 Nm (2.0 m
S
kg, 14 ft
S
lb)+120
_