Cylinder Head Tightening Sequence & Torque

Cylinder Head Tightening Sequence:

With Engine cold, tighten cylinder head bolts in steps, as follows:
Step 1, tighten in sequence to: 40 Nm (30 ft. lbs.).
Step 2, Tighten in sequence to: 60 Nm (44 ft. lbs.).
Step 3, turn an additional: 1/2-turn (180°).

NOTE:
^ Carry out the additional 1/2-turn using a rigid wrench without lifting off the wrench
^ Two steps of 1/4-turn (90°) are also permissible.
^ It is not necessary to re-tighten the cylinder head bolts during regular service or after repairs.