This manual covers the Jaguar Mk X and its successors, the 420 and 420G, produced between 1960 and 1970. These full-size luxury saloons, originating from Coventry, England, were designed to offer elegant styling, powerful performance, and a luxurious interior, competing with prestigious marques of the era. The vehicles are distinguished by their robust unitary body construction and are powered by Jaguar's renowned DOHC Inline-6 XK engines, available in 3.8L and 4.2L displacements. Notable features include independent front and rear suspension, four-wheel disc brakes, and available power steering, all contributing to a sophisticated driving experience for affluent individuals and discerning motorists.

This comprehensive workshop service repair manual provides detailed information essential for the maintenance and repair of your Jaguar Mk X / 420 S-Type. It covers a wide range of systems, including the engine, cooling, fuel, ignition, transmission, drivetrain, suspension, steering, brakes, and electrical systems. The manual offers step-by-step instructions for routine maintenance, engine and transmission overhauls, brake and suspension repairs, and electrical troubleshooting, along with diagnostic guides for common issues. Its scope ensures that owners, mechanics, and technicians have the necessary resources to keep these classic vehicles in optimal condition.