This manual covers the Honda Z50A, affectionately known as the "Monkey Bike," a highly recognizable and popular recreational vehicle produced during its first generation from 1968 to 1978. Renowned for characteristic engineering quality and reliability, the Z50A is celebrated for its compact size, ease of use, and playful design, making it a beloved machine for enthusiasts of all ages. Its simple yet robust construction, featuring an air-cooled 49cc single-cylinder engine and a semi-automatic transmission, has cemented its status as an iconic model in motorcycling history, offering a unique and accessible riding experience. This comprehensive Service and Repair Manual is designed to assist owners and technicians in maintaining and repairing the Honda Z50A models from 1968 through 1974. It provides detailed coverage of all essential systems, including the engine, transmission, fuel and ignition systems, brakes, suspension, and frame. Within its pages, you will find step-by-step procedures for routine maintenance, adjustments, troubleshooting common issues, and complete engine rebuilds, all supported by detailed diagrams and critical torque specifications. The manual is presented in English and is structured for easy navigation with clickable chapters and searchable text, enabling efficient diagnosis and repair to keep your Z50A in optimal condition.