This manual covers the Parsun F4BM and F5BM Outboard Engine Motors. These models are designed for reliable performance and efficient operation, embodying robust engineering for various marine applications. The Parsun outboard engines are known for their quality construction and dependable functionality, making them a practical choice for boat owners seeking a capable and durable power source. This comprehensive service repair manual provides detailed instructions and high-quality diagrams to guide you through the maintenance and repair of your Parsun F4BM or F5BM outboard engine. It includes sections on general information, specifications, periodic servicing, and specific repair procedures for key components such as the recoil starter, ignition system, fuel system, power unit, upper unit, and lower unit. Additionally, it offers solutions for common troubles, empowering owners and technicians to effectively maintain and troubleshoot these engines.