Yamaha YZF-R1 2020 Service Manual page 357

a
b
3. Install:
• Dowel pins
4. Set the shift drum assembly and transmission
gears in the neutral position.
5. Install:
• Lower crankcase "1"
(onto the upper crankcase "2")
ECA13980
NOTICE
Before tightening the crankcase bolts, make
sure the transmission gears shift correctly
when the shift drum assembly is turned by
hand.
6. Install:
• Crankcase bolt (× 40)
TIP
• Lubricate the bolts "1"–"10" thread, mating sur-
faces and washers with engine oil.
• Lubricate the bolts "11"–"18" thread, mating
surfaces and O-rings with engine oil.
• Lubricate the bolts "19"–"27", "29"–"39" thread
and mating surfaces with engine oil.
• Lubricate the bolts "28", "40" mating surfaces
with engine oil.
a
• Apply the bolts "28", "40" thread with LOC-
TITE®.
• M9 × 100 mm (3.94 in) bolts with washers:
"1"–"10"
• M8 × 58 mm (2.28 in) bolts with new O-rings:
"11"–"18"
• M8 × 60 mm (2.36 in) bolts: "19", "20"
• M6 × 65 mm (2.56 in) bolts: "21", "22"
• M6 × 70 mm (2.76 in) bolt: "23"
• M6 × 60 mm (2.36 in) bolts: "24"–"27", "35",
"38"
• M6 × 50 mm (1.97 in) bolts: "31"–"34"
• M6 × 50 mm (1.97 in) bolts (LOCTITE®):
"28", "40"
• M6 × 40 mm (1.57 in) bolts: "29", "30", "36",
"37", "39"
31
17
30
29
1
7. Tighten:
• Crankcase bolts "1"–"10"
2
*
Following the tightening order, loosen the
bolt one by one and then retighten it to the
specific torque.
5-74
CRANKCASE
New
21
33
15 32
23
18
16
7
5 1
4
10 2
28 26
25
27
38
40
39 37 36
Crankcase bolts
1st: 20 N·m (2.0 kgf·m, 15 lb·ft)
*2nd: 15 N·m (1.5 kgf·m, 11 lb·ft)
3rd: Specified angle 75°
34
13
11
14
35
12
3 9
6 8
22
24
19
20
40
" "–" "
1 10