The Series I, produced from 1948 through 1951, represents a foundational icon in the history of the four-wheel-drive utility vehicle. Born from post-war necessity and inspired by the rugged capabilities of the Willys Jeep, the Series I established the marque's reputation for exceptional durability, reliability, and go-anywhere performance. Its design philosophy centered on simple, robust construction, making it an ideal tool for agricultural, military, and general off-road use. This utilitarian vehicle, engineered in Solihull, England, quickly became recognized globally for its British engineering prowess and unmatched off-road capability, carving out a distinct identity among its contemporaries.

This English-language manual serves as a comprehensive guide for owners of the Series I, particularly those seeking original operational and basic maintenance information. It covers essential aspects of the vehicle's systems, including the 1.6L and later 2.0L petrol engines, the 4-speed manual transmission and transfer case, and the chassis and suspension. The manual also details routine checks, driving techniques specific to the Series I, and basic maintenance procedures, offering owner-level insights rather than in-depth repair instructions. Its purpose is to assist owners in understanding and maintaining their historically significant vehicle, ensuring its continued operation and preservation.