This manual covers the Royal Enfield Model J and Model J2 motorcycles produced between 1946 and 1948. These motorcycles represent a significant period in Royal Enfield's post-war history, known for their robust engineering and reliable performance. The Model J and J2 were designed with durability and practicality in mind, making them suitable for a variety of uses from daily commuting to longer journeys. Their timeless styling and solid construction have made them enduring classics for enthusiasts and collectors alike.

The purpose of this Master Parts Manual is to provide comprehensive information for the identification and sourcing of all factory-supplied components for the specified Royal Enfield models. It includes detailed diagrams, part numbers, and descriptions for every system, including the engine, fuel, ignition, transmission, chassis, suspension, brakes, wheels, electrical system, bodywork, and controls. This manual is an essential resource for owners, restorers, mechanics, and technicians, ensuring accurate part replacement, facilitating maintenance, and supporting complete rebuilds to maintain the originality and functionality of these historic motorcycles.