This workshop service repair manual covers the Yanmar Mase Marine Generators IS 6.5 and IS 7.6 models. These diesel-powered generators are engineered for reliable performance, offering power outputs of 6.5 kVA for the IS 6.5 and 7.6 kVA for the IS 7.6. Designed for marine applications, they feature robust construction and are typically raw water cooled via a heat exchanger, ensuring efficient operation in demanding environments. This comprehensive English-language manual provides detailed guidance on all aspects of maintenance and repair. It includes complete coverage of repair and service procedures, essential for owners, mechanics, and technicians. By following the instructions within this manual, users can effectively maintain their Yanmar Mase Marine Generators, ensuring continued optimal performance and longevity.