Yamaha FJR1300R, Service Manual

Page: 406 / 572

5 - 97
ENG
EAS00396
CHECKING THE CONNECTING RODS
1. Measure:
• crankshaft-pin-to-big-end-bearing clear-
ance
Out of specification
→
Replace the big end
bearings.
▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼▼▼
The following procedure applies to all of the
connecting rods.
CAUTION:
@
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 orig-
inal 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
connecting rod and the big end lower bear-
ing into the connecting rod cap.
NOTE:
@
Align the projections
a
on the big end bear-
ings 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.
NOTE:
@
• Do not move the connecting rod or crank-
shaft until the clearance measurement has
been completed.
• Lubricate the bolts threads and nut seats
with molybdenum disulfide grease.
• Make sure the “Y” mark
c
on the connecting
rod faces towards the left side of the crank-
shaft.
• Make sure the characters
d
on both the con-
necting rod and connecting rod cap are
aligned.
Crankshaft-pin-to-big-end-bear-
ing clearance
0.021 ~ 0.039 mm
(0.0008 ~ 0.0015 in)
CONNECTING RODS AND PISTONS