Motorcycle, Solo (Harley-Davidson Model WLA)

This manual gives a clear, step‑by‑step guide to operating the Harley‑Davidson solo motorcycle used by U.S. forces in the early 1940s. Designed for soldiers and support crews, it explains the layout, controls, and safety checks before the first ride. The tone stays practical while honoring the bike’s rugged character.

The first section covers start‑up, throttle response, gear shifts, and routine lubrication, illustrated with diagrams of the engine, chain, and fuel system. Later chapters outline preventive maintenance schedules, required tools, and step‑by‑step troubleshooting for problems such as carburetor fouling or ignition failure. Tables provide dimensions, gear ratios, fuel consumption, and performance limits for quick field reference.

Because it was issued before a full technical review, the manual notes possible errata and how to submit corrections, keeping it useful for restorers and historians. Its concise language and organized layout make a complex wartime machine approachable for anyone interested in authentic maintenance procedures.