Yamaha YZF-R1 Series Service Manual page 376

G089020
e. Install the crankshaft journal lower bear-
ings "1" into the lower crankcase and as-
semble the crankcase halves.
TIP
• Align the projections "a" of the crankshaft jour-
nal lower bearings with the notches "b" in the
lower crankcase.
• Do not move the crankshaft until the clearance
measurement has been completed.
G089019
f. Tighten the bolts to specification in the
tightening sequence cast on the crank-
case.
Refer to "CRANKCASE" on page 5-71.
g. Remove the lower crankcase and the
crankshaft journal lower bearings.
h. Measure the compressed Plastigauge®
width "a" on each crankshaft journal.
If the crankshaft-journal-to-crankshaft-
journal-bearing clearance is out of specifi-
cation, select replacement crankshaft
journal bearings.
a
G089021
CRANKSHAFT AND BALANCER SHAFT
1
1
a
b
5-93
4. Select:
• Crankshaft journal bearings (J
TIP
• The numbers "A" stamped into the crankshaft
web and the numbers "B" stamped into the
lower crankcase are used to determine the re-
placement crankshaft journal bearing sizes.
• "J "–"J " refer to the bearings shown in the
1 5
crankshaft and lower crankcase illustration.
For example, if the crankcase "J
shaft web "J " numbers are 5 and 2 respec-
1
tively, then the bearing size for "J
"J " (crankcase) - "J " (crankshaft web) + 4 = 5 - 2
1 1
+ 4 = 7 (red)
Bearing color code
Code 0
White
Code 1
Blue
Code 2
Black
Code 3
Brown
Code 4
Green
Code 5
Yellow
Code 6
Pink
J J J
1 2
J J J J J
1 2 3 4
–J )
1 5
" and crank-
1
" is:
1
J J
3 4 5
5