1. Tighten the cylinder head bolts in the following sequence:
1. Bolt 1
2. Bolt 2
3. Bolt 3
4. Bolt 4
2. Tighten the cylinder head bolts to 25 ft-lbs.
3. Recheck the cylinder head bolts after the engine has been run and allowed to cool down.
Note: Be sure to use a new cylinder head gasket when reinstalling the cylinder head.