The Yamaha LF300CA is a robust 4.2L V6 Offshore four-stroke outboard motor, engineered for demanding marine applications. Featuring a DOHC engine design and Electronic Fuel Injection (EFI), this model, produced since June 2011 and identified by PID range 6CF-1001446 to current, offers reliable power and performance. Its advanced engineering ensures durability and efficiency, making it a trusted choice for a variety of boating needs. This Factory Service Repair Manual Supplement, written in English, provides comprehensive guidance for the Yamaha LF300CA. It details disassembly, repair, assembly, and inspection operations using a sequential, step-by-step format supplemented with exploded diagrams. This manual is an essential resource for owners, mechanics, and technicians, enabling them to perform maintenance and repairs accurately and effectively, ensuring the continued optimal performance and longevity of the engine.