This manual pertains to Volvo Penta 285 / 285A sterndrive models. These units are engineered for robust performance and reliability in marine applications. The Volvo Penta 285 / 285A sterndrive represents a commitment to quality, offering advanced features designed to enhance the boating experience. This documentation is specific to the unique design and functionality of these particular sterndrive configurations. This Service Repair Workshop Manual provides comprehensive guidance for the maintenance and repair of your Volvo Penta 285 / 285A sterndrive. It covers essential areas including general engine information, safety precautions, detailed repair instructions, tightening torques, special tool requirements, and specific model and generation details. Furthermore, the manual delves into the design and function of key components, sterndrive removal and installation, shift mechanisms, intermediate housings, lower and forward gear systems, propeller shafts, transom shields, trim systems, and sterndrive extensions. Technical data, service bulletins, and wiring diagrams are also included to assist owners, mechanics, and technicians in effectively maintaining and troubleshooting these units.