General Procedure
NOTE:
Refer to general specifications in the appropriate 303-01 engine section for the appropriate specification.
NOTE:
Use a straightedge that is calibrated by the manufacturer to be flat within 0.005 mm (0.0002 in) per running foot of length, such as Snap-On® GA438A or equivalent. For example, if the straightedge is 61 cm (24 in) long, the machined edge must be flat within 0.01 mm (0.0004 in) from end-to-end.
Use a straightedge and a Feeler Gauge Set to inspect the cylinder block for flatness.