Clean the surface of the cylinder head.
Put a straight edge (Item 1) [Figure 70-80-22] on the cylinder head.
NOTE: Do not put the straight edge across combustion chambers.
Put a feeler gauge (Item 2) [Figure 70-80-22] between the straight edge and the surface of the cylinder head.
Put the straight edge on the cylinder head’s four sides and two diagonal as shown in figure [Figure 70-80-23].
The maximum distortion of the head surface is ยฑ 0.002 in. (ยฑ 0,05 mm). If the measurement exceeds the
specification, replace the cylinder head.
