This workshop service repair manual covers the Volvo AQ120, a marine engine featuring a 4-cylinder, 2.1-liter internal combustion engine. Designed for reliable performance, this engine typically produces 130 horsepower and utilizes an inline cylinder arrangement. Its robust engineering ensures dependable operation, making it a suitable choice for various marine applications where power and longevity are paramount. This comprehensive manual provides detailed information essential for the maintenance and repair of your Volvo AQ120. It includes in-depth procedures for servicing, troubleshooting, and technical specifications. Owners, mechanics, and technicians will find guidance on critical aspects such as engine tune-ups, fluid capacities, and electrical systems, enabling them to keep the engine in optimal condition and ensure its continued reliability.