The Westerbeke W-52 63B 63C FOUR is a marine diesel engine designed for robust performance and reliability in maritime applications. This 4-cylinder, 4-stroke, water-cooled diesel engine features a 2.21L displacement, offering efficient power delivery for various marine needs. Westerbeke engines are recognized for their enduring quality and engineering, making them a trusted choice for boat owners and operators who demand dependable propulsion. This service repair manual provides comprehensive guidance for the maintenance and repair of the Westerbeke W-52 63B 63C FOUR engine. It covers essential procedures including engine overhaul, disassembly, and assembly, along with detailed instructions for critical components such as the cylinder head, fuel system, cooling system, and marine transmission. With step-by-step procedures, exploded views, and diagrams, this manual is an indispensable resource for owners, technicians, and mechanics to ensure the optimal performance and longevity of their marine diesel engine.