Cylinder head assemblies: valves - rocker arms
Overhaul of cylinder head components
Overhaul of the cylinder heads
Remove any carbon deposits from the combustion chamber and its ducts.
Check for cracking and inspect the sealing surfaces for scoring, ridges or other damage.
The cylinder barrel mating surface must be perfectly flat. If this is not the case, spread diamond dressing compound
(6 to 12 micron thickness) on a reference surface and slide the cylinder head on the surface as shown in the figure until a
flat finish is obtained.