Yamaha 2009 XP500Y TMAX Service Manual page 206

Cylinder head nut
35 Nm (3.5 m·kg, 25 ft·lb)
• Cylinder head nuts "2"
Cylinder head nut
46 Nm (4.6 m·kg, 33 ft·lb)
• Cylinder head bolts "3"
Cylinder head bolt
10 Nm (1.0 m·kg, 7.2 ft·lb)
TIP
• Lubricate the cylinder head nuts and washers
with engine oil.
• Tighten the cylinder head nuts and bolts in the
proper tightening sequence as shown and
torque them in two stages.
5-17
CYLINDER HEAD