Yamaha YZ450F(D) Owner's Service Manual page 97

Tighten the bolts two times at speci-
fied angles of 90°and 60° to reach the
specified angle of 150° in the proper
tightening sequence as shown.
Bolts (cylinder head):
Final:
Specified angle 150°
3. Install:
• Bolt (cylinder head) "1"
Bolt (cylinder head):
10 Nm (1.0 m•kg, 7.2
ft•lb)
4-16
CYLINDER HEAD