This workshop service and repair manual covers the Kohler Magnum MV16, MV18, and MV20 twin-cylinder engines. These engines are known for their robust construction and reliable performance, designed for demanding applications. This manual provides comprehensive information to ensure these engines remain in optimal condition throughout their service life, aiding owners in maintaining their investment and minimizing repair costs. The purpose of this manual is to serve as a definitive guide for the service, repair, and maintenance of your Kohler Magnum engine. It includes detailed, step-by-step instructions, exploded diagrams, and coverage for periodic maintenance, inspection, repair, reconditioning, and troubleshooting. Specific sections address the disassembly and reassembly of components, as well as service procedures for critical systems including the air cleaner, fuel system, governor, starter, and electrical systems, ensuring that both owners and technicians have the resources needed for effective upkeep.