YANMAR engine Manuals & Parts Catalogs YANMAR diesel engines for marine, agricultural and construction applications Spare parts catalogs, Service & Operation Manuals. Spare parts for Yanmar marine engines. Please see the Home Page with explanation how to order and receive Manuals and Code Books. Use the menu below to select the appropriate Yanmar diesel engine model. Yanmar Diesel Engine Manuals - MARINE DIESEL BASICS Free download of manuals and other publications for Yanmar diesel engines. Manuals for Yanmar Diesel Engines, Saildrives and Sterndrives. Owner and Workshop Manuals are important documents that should be part of every vessel's library. They contain the detailed information necessary for safe operation, maintenance and correct servicing.