This workshop service repair manual provides comprehensive information for the Volvo B19 Engine. This inline 4-cylinder engine, with a displacement of 1.9 liters, features a robust cast iron block and an aluminum alloy cylinder head. It was designed for reliability and performance, offering approximately 90-100 horsepower and 103-114 lb-ft of torque, depending on the specific variant. The engine utilizes a liquid-cooled system and forced lubrication, with fuel delivery managed by either a carburetor or Bosch K-Jetronic fuel injection. Transmission options include manual or automatic, with manual transmissions typically featuring 4 or 5 speeds. This manual serves as an essential resource for maintaining and repairing the Volvo B19 Engine. It covers a wide range of topics, including detailed maintenance procedures, fluid capacities, recommended service intervals for oil changes and spark plug replacements, and troubleshooting guidance. Technical specifications, such as bore, stroke, and compression ratios, are provided for various configurations. The manual also includes diagnostic information, implied to cover the use of diagnostic tools and the inclusion of wiring diagrams, ensuring that owners, mechanics, and technicians have the necessary knowledge to keep the engine in optimal working condition.