Three Models

This manual covers the Westerbeke 20B TWO and 30B THREE marine diesel engines. These 4-cycle, water-cooled engines are designed for marine propulsion. The 20B TWO features a 0.635L 2-cylinder vertical configuration, while the 30B THREE offers a 0.952L 3-cylinder vertical setup. Both models utilize a fuel injection pump and injection nozzle system, a glow plug and starter system for ignition, and an alternator system for charging. Westerbeke engines are engineered for reliability and performance in demanding marine environments.

This workshop manual covers the Westerbeke 20B TWO and 30B THREE marine diesel engines, designed for marine propulsion. The 20B TWO is a 0.635L 2-cylinder vertical, 4-cycle, water-cooled engine, while the 30B THREE is a 0.952L 3-cylinder variant. These engines are engineered for reliability and performance in marine environments.