The Volvo Penta AQ171 is an inboard marine engine designed for reliable performance on the water. This engine features an inline-4 cylinder configuration with a displacement of 2.3 liters (2316 cc), delivering approximately 160 horsepower. It utilizes fuel injection and electronic ignition for efficient operation, and a closed cooling system with a heat exchanger ensures optimal temperature regulation. The AQ171 is compatible with sterndrive or inboard configurations, offering versatility for various marine applications. This Workshop Service Manual (WSM) in English provides comprehensive guidance for the maintenance and repair of the Volvo Penta AQ171. It covers all services, repairs, and routine maintenance procedures, offering step-by-step instructions, diagrams, and wiring schematics. The manual is designed to assist owners and technicians in understanding and performing necessary upkeep, troubleshooting issues, and ensuring the longevity and optimal performance of the engine. It is a valuable resource for saving on repair costs and enhancing technical knowledge.