Cylinder Head Tightening Sequence - Yamaha 2012 TMAX XP500A Service Manual

Item
Secondary shaft bearing retainer
bolt
Stator coil bolt
Crankshaft position sensor bolt
Starter motor bolt
O sensor
2
Coolant temperature sensor
TIP
Cylinder head nut
1. Tighten the nuts to 10 Nm (1.0 m·kgf, 7.2 ft·lbf).
2. Tighten the nuts to 20 Nm (2.0 m·kgf, 14 ft·lbf).
3. Tighten the nuts further to reach the specified angle 120°.
TIP
Cylinder head stud bolt
• The tightening torque is for reference only. Install the cylinder head stud bolt so that it protrudes
150.2–152.2 mm (5.91–5.99 in) from the crankcase.
TIP
Connecting rod nut
• Tighten the connecting rod nuts to 16 Nm (1.6 m·kgf, 12 ft·lbf), and then tighten them further to
reach the specified angle 90°.
TIP
Generator rotor nut
• Tighten the generator rotor nuts to 65 Nm (6.5 m·kgf, 47 ft·lbf), and then tighten them further to
reach the specified angle 120°.

Cylinder head tightening sequence:

Thread
Q'ty
size
M6 2 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
M6 3 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M18 1 45 Nm (4.5 m·kgf, 33 ft·lbf)
M12 1 18 Nm (1.8 m·kgf, 13 ft·lbf)
2-17
TIGHTENING TORQUES
Tightening torque Remarks
LT
LT
LT