b. Cleaning and Inspection.
(1) Discard the cylinder head gasket. Clean
the cylinder head and cylinder head bolts with
cleaning solvent; scrape carbon deposits from the
cylinder head, taking care not to scratch sealing
surfaces.
(2) When the cylinder head is removed, clean
the top of the cylinder block, carefully removing
carbon from piston tops and from around the valve
head and seats. Take care not to scratch or score
valve seats.
(3) Inspect the cylinder head for cracks,
warping, broken cooling fins, spark plug port
threads, and other damage. Straighten bent cooling
fins. Replace a dam aged cylinder head.
c. Installation.
(1) Refer to figure 6-5 and install the cylinder
head, using a new gasket. (Installation procedure is
reverse of removal.)
(2) Install the air shroud (para 4-18).
(3) Install the spark plug (par 4-21).
(4) After installation of air shroud, torque all
cylinder head mounting bolts, following the
sequence shown in figure 6-6.
Figure 6-6. Cylinder head bolts tightening sequence.
6-6
