Installing The Crankshaft - Yamaha YZF-R1 Series Service Manual

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 bal-
ancer shaft journal lower bearings.
h. Measure the compressed Plastigauge®
width "a" on each balancer shaft journal. If
the balancer shaft-journal-to-balancer
shaft-journal-bearing clearance is out of
specification, select replacement balancer
shaft journal bearings.
a
G089021
4. Select:
• Balancer shaft journal bearing (J
TIP
• The numbers "A" stamped into the balancer
shaft web and the numbers "B" stamped into
the lower crankcase are used to determine the
replacement balancer shaft journal bearing siz-
es.
• "J "–"J " refer to the bearings shown in the bal-
1 4
ancer shaft and lower crankcase illustration.
For example, if the crankcase "J
ancer shaft web "J " numbers are 6 and 2 re-
1
spectively, then the bearing size for "J
"J " (crankcase) - "J " (balancer shaft web) - 1 =
1 1
6 - 2 - 1 = 3 (brown)
CRANKSHAFT AND BALANCER SHAFT
1
a
b
–J )
1 4
" and bal-
1
" is:
1
5-95
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
1 2
J J J J
1 2 3 4
EAS31077

INSTALLING THE CRANKSHAFT

1. Install:
• Crankshaft journal upper bearings
(into the upper crankcase)
J J
3 4
J J J J
1 2 3 4