Yamaha R1 Series 2015 Service Manual page 96

2. Perform the following procedure to all the bolts one by one in the tightening sequence as shown in
the illustration.
a. Loosen the bolt.
b. Tighten the bolt to 3.0 Nm (0.30 m·kgf, 2.2 ft·lbf) with a torque wrench.
c. Tighten the bolt further to reach the specified angle 90 .
TIP
Crankcase bolt
Tighten the crankcase bolts "1"–"40" in the proper tightening sequence as follows.
1. Tighten the crankcase bolts "1"–"10" to 20 Nm (2.0 m·kgf, 14 ft·lbf).
2. Loosen and retighten the crankcase bolts "1"–"10" to 15 Nm (1.5 m·kgf, 11 ft·lbf) in the proper tight-
ening sequence.
3. Tighten the crankcase bolts "1"–"10" further to reach the specified angle 75 in the proper tightening
sequence.
4. Tighten the crankcase bolts "11"–"40".
"11"–"20": 24 Nm (2.4 m·kgf, 17 ft·lbf)
"21"–"40": 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
TIP
Connecting rod bolt
1. Tighten the connecting rod bolts to 25 Nm (2.5 m·kgf, 18 ft·lbf).
2. Tighten the connecting rod bolts further to reach the specified angle 175 –185 with torque wrench,
and then confirm that the torque value is within the range of 40 Nm (4.0 m·kgf, 29 ft·lbf) to 85 Nm
(8.5 m·kgf, 61 ft·lbf) with keeping the torque wrench 175 –185 .
2
1
8
7
21
31
15 32
17
23
18
16
30
7
5
29
10 4
28 26
25
27
38
40
39 37
2-21
TIGHTENING TORQUES
3
4
5
6
34
33
13
11
14
35
12
3
9
1
6
2 8
22
24
19
20
36
40