Yamaha YZ450F Owner's Service Manual page 219

i. Retighten the cylinder head mounting bolts
150° in the proper tightening sequence.
TIP
Tighten the bolts in two steps (90° and 60°) to
reach the specified angle in the proper tighten-
ing sequence.
Bolts "1"–"4"
Final
Specified angle 150°
j. Tighten the bolts to the specified torque.
Bolt "5", "6"
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
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5-24
CYLINDER HEAD