This document pertains to the Allis Chalmers B-206-E tractor, a member of the B-Series generation. Designed for agricultural and utility applications, this tractor embodies the robust engineering and reliability characteristic of its era. Its construction prioritizes durability and operational efficiency, making it a valuable asset for a variety of tasks. The B-206-E is built to withstand demanding work environments, reflecting a commitment to quality and longevity in its design and manufacturing. This Factory Service Repair Manual provides comprehensive guidance for the maintenance, repair, and operation of the Allis Chalmers B-206-E tractor. It includes detailed procedures for all major systems, such as the engine, hydrostatic drive transmission, and electrical system, along with an advanced troubleshooting guide. The manual features illustrations, diagrams, and wiring schematics to assist owners, mechanics, and technicians in performing necessary service tasks. Coverage extends to routine maintenance, fluid specifications, and information on B-Series attachments, ensuring the vehicle remains in optimal working condition.