Service Manuals also called Shop & Repair Manuals are guides available from the makers. The shop manuals cover complete directions to diagnose & repair the specific item. The shop manuals are very detailed and would usually contain comprehensive service info and procedures, removing and installing procedures, dissassembly and assembly, and overhaul procedures, diagnosis and testing procedures & detailed illustrations. These service guides are the equivalent manuals the professionals use.
Parts Catalogs also called Parts Manuals are guides published from the product makers showing a complete list of the manufacturer parts or assemblies for the certain item by complete in-depth illustration or a numerical listing of parts numbers & names. It does not include any assembly, maintenance, or operating directions.
Owners Manuals also called Operator/Operating & Instruction Manuals are hand books available by the product producers accompanying the specific item detailing how to install or operate the exact item, safety directions & warranty information.