Yamaha YZF-R1 2020 Service Manual page 317

• Lubricate the cylinder head bolt (M9) thread
and mating surface with engine oil.
3. Tighten:
• Cylinder head bolt "1"–"10"
• Cylinder head bolt "11", "12"
Cylinder head bolt "1"–"10"
1st: 10 N·m (1.0 kgf·m, 7.4 lb·ft)
2nd: 25 N·m (2.5 kgf·m, 18 lb·ft)
3rd: 45 N·m (4.5 kgf·m, 33 lb·ft)
*4th: 15 N·m (1.5 kgf·m, 11 lb·ft)
Specified angle 160°
Cylinder head bolt "11", "12"
9 N·m (0.9 kgf·m, 6.6 lb·ft)
* Following the tightening order, loosen the
bolt one by one and then retighten it to the
specific torque and the specific angle.
TIP
Tighten the cylinder head bolts in the tightening
sequence as shown and torque them in 4 stag-
es.
6 2
8
9
3 1
4. Install:
• Exhaust camshaft
• Intake camshaft
Refer to "INSTALLING THE CAMSHAFTS"
on page 5-28.
4
10
12
11
7
5
2
10
5-34
CYLINDER HEAD