This manual covers the Yanmar Light Boy LB446H-1 and LB446HB-1 Floodlight Projector models. Designed for robust performance and reliability, these units are engineered to meet demanding operational requirements. Their construction emphasizes durability and efficient functionality, making them a trusted choice for various applications requiring powerful illumination. This comprehensive Service Repair Workshop Manual provides essential information for the service and repair of your Yanmar Light Boy Floodlight Projector. It includes detailed illustrations, step-by-step instructions, and hundreds of photos covering safety, structural outlines, disassembly and assembly, inspection and maintenance, periodic checks, circuits, troubleshooting, and specifications. This manual is an indispensable resource for both do-it-yourself enthusiasts and experienced mechanics.