This comprehensive workshop manual is specifically designed for Yanmar Mase Marine Generators, covering the IS12, IS14, IS16 (50Hz) and IS19 (60Hz) models. It provides detailed instructions and high-quality diagrams to guide you through every aspect of maintenance, repair, and troubleshooting. The manual begins with a clear identification of the generator's components and a detailed tool table. It delves into the alternator system, covering the stator, rotor, excitation windings, and associated components. The engine section provides technical specifications, maintenance procedures, troubleshooting guides, fuel system details, lubrication system information, and even the electric diesel fuel pump. The manual further explores various sensors within the generator including the thermostatic valve, engine thermal switch, temperature sensor, oil pressure switch, and oil pressure sensor. The seawater cooling system is also thoroughly explained with sections dedicated to the seawater/closed-circuit system, water pump, water pump belt, water/water heat exchanger, and water/air heat exchanger. Detailed adjustments are outlined with specific instructions for RPM adjustment and lock and handle adjustments. The electrical system is covered in depth, including the instrument panel, remote instrument panels, hour counter, magnetohydraulic switch, engine wiring, engine protection module, battery charger alternator, engine electromagnet, starter motor, voltage regulator, and battery. The manual then provides step-by-step instructions for disassembly, covering procedures for removing the casing, alternator, water/air exchanger unit, stator casing, and rotor. To facilitate repairs, the manual includes comprehensive spare parts lists for the IS12-14 and IS16-19 models, covering the engine, alternator, frame, seawater system, and control panel. Finally, a wiring diagram is provided for complete electrical system understanding.

The Yanmar Mase Marine Generators IS 12, IS 14, IS 16, and IS 19 are a series of reliable and robust marine generators designed for a wide range of applications, including pleasure boats, commercial vessels, and workboats. These generators are renowned for their exceptional performance, durability, and fuel efficiency. Built by Yanmar, a leading manufacturer of diesel engines and marine equipment, these generators are known for their high-quality construction and innovative engineering. The IS series employs advanced technology to minimize noise and vibration, ensuring a comfortable and pleasant onboard experience. The IS 12, IS 14, IS 16, and IS 19 generators are powered by Yanmar's renowned 4-cylinder, 4-stroke diesel engines, known for their exceptional efficiency and low emissions. Each model offers different power outputs, catering to the specific needs of different vessels. The IS 12 delivers 12 kW, the IS 14 generates 14 kW, the IS 16 boasts 16 kW, and the IS 19 provides 19 kW of reliable power. These generators are equipped with a comprehensive range of features that ensure smooth operation and minimal maintenance. These include reliable starting systems, efficient cooling systems, and robust alternators that deliver consistent power output even under demanding conditions. The Yanmar Mase Marine Generators IS 12, IS 14, IS 16, and IS 19 represent a reliable and efficient source of onboard power for both recreational and commercial marine applications.