This manual pertains to the 1938 Overhead Valve (OHV) Models, produced by the esteemed British motorcycle manufacturer. Known for their performance and engineering quality, motorcycles of this era were competitive against other prominent marques of the period. The OHV engine designs offered enhanced power and efficiency over earlier configurations, making these models sought after for their sporting capabilities and robust construction. This parts manual catalog serves as a vital resource for owners, restorers, and enthusiasts aiming to maintain or rebuild these classic machines, ensuring the preservation of their historical significance and operational integrity.

The purpose of this manual is to provide comprehensive identification of all components and assemblies for the 1938 OHV models. It features detailed exploded diagrams that illustrate the correct assembly of parts and lists genuine part numbers, which are essential for accurate parts sourcing and ordering. Coverage extends across all major systems, including the engine, fuel, ignition, transmission, chassis, suspension, braking, wheels, and electrical systems. While this catalog focuses on parts identification and illustration, it is an indispensable tool for anyone involved in the upkeep and restoration of these iconic motorcycles, facilitating precise part selection for maintenance and repair.