This service repair manual covers 700/750 Series DOV engines. The DOV (Durable, Overhead Valve) engine design is known for its robust construction and efficient operation. These air-cooled, 4-stroke engines are engineered for reliable performance across a range of applications. This manual provides essential information for maintaining and repairing specific models within the 700/750 series, including those designated by serial number prefixes 090600, 100600, and 100800. The purpose of this English-language manual is to guide owners, technicians, and mechanics through all aspects of engine service and repair. It details critical maintenance procedures, troubleshooting common issues, and provides access to important technical specifications. Key areas covered include lubrication systems, cylinder heads and valves, starters, governor systems, and crankshafts. By following the instructions within this manual, users can ensure the optimal performance, longevity, and safe operation of their engines.