Yamaha RS90RK, Service Manual

Page: 540 / 841

5-61
ENG
CRANKCASE
• Install the crankshaft journal lower bearings 1
into the lower crankcase and assemble the
crankcase halves.
NOTE:
• Align the projections
a
of the crankshaft journal
lower bearings with the notches
b
in the crank-
case.
• Do not move the crankshaft until the clearance
measurement has been completed.
• Tighten the bolts in the order of the embossed
numbers on the crankcase.
M9
×
105 mm bolts: 1
M8
×
70 mm bolts:
2
M8
×
55 mm bolt: 3
M6
×
55 mm bolts:
4
M6
×
80 mm bolts: 5
M6
×
80 mm bolt:
6
(with LOCTITE
®
)
M6
×
52 mm bolt: 7
NOTE:
Lubricate the crankcase bolt threads with engine
oil.
• Remove the lower crankcase and the crank-
shaft journal lower bearings.
• Measure the compressed Plastigauge
®
width
c
on each crankshaft journal.
If the clearance is out of specification, select
replacement crankshaft journal bearings.
T
R
.
.
Crankcase bolt:
Bolt
1
:
1st: 15 Nm (1.5 m · kg, 11 ft · lb)
2nd: 15 Nm (1.5 m · kg, 11 ft · lb)
Final: Specified angle 65 ~ 70°
Bolt
2
,
3
:
24 Nm (2.4 m · kg, 17 ft · lb)
Bolt
4
~
7
:
12 Nm (1.2 m · kg, 8.7 ft · lb)
22
2
18
16
5 6
7
13
9
1
10
14
4
15
19
17
3
8
20
21
24
23
11 12
1
1
1
1
1
1
1 1
2
2
2
4
4
5
5
6
5
5
5
4
4
7
4
3
c