Glossary “minor tune-up” Definition:
Engine maintenance procedure performed on distributor ignition vehicles that includes only the replacement of parts found to be defective.

Glossary “minor diameter” Definition:
1). Smallest diameter of a cylinder. 2). Smallest diameter of a bolt thread.

Glossary “minor overhaul” Definition:
Engine repair procedure that includes a valve job, replacing the piston rings, the rod bearings, and the gasket set.