This comprehensive Master Service Manual provides detailed instructions and technical specifications for servicing Volvo Penta Aquamatic Drives models 280, 280 dp, 285, 290, and 290 dp. It serves as an essential resource for technicians and marine professionals involved in the maintenance and repair of these drives. The manual covers a wide range of topics, including: * **General information:** Provides an overview of the Aquamatic Drive system, its components, and operating principles. * **Disassembly and assembly:** Step-by-step procedures for disassembling and reassembling the drive unit, along with detailed illustrations and torque specifications. * **Component repair:** Instructions on repairing specific drive components, such as the propeller, gear housing, and steering mechanism. * **Troubleshooting:** Provides guidance on diagnosing and resolving common drive malfunctions. * **Lubrication and maintenance:** Covers recommended lubricants, service intervals, and maintenance procedures. * **Electrical system:** Details on the drive's electrical system, including wiring diagrams and troubleshooting tips. * **Safety procedures:** Emphasizes safety precautions to be taken during service and repair operations. The manual is designed to be user-friendly, with clear and concise language, detailed illustrations, and easy-to-follow instructions. It serves as a valuable tool for ensuring the proper maintenance and repair of Volvo Penta Aquamatic Drives, promoting optimal performance and reliability.

The Volvo Penta Aquamatic drives, encompassing models 280, 280 DP, 285, 290, 290 DP, and MASTE, represent a range of sterndrive propulsion systems designed for recreational and commercial marine applications. These drives are renowned for their reliability, durability, and performance, making them a popular choice among boat owners. The 280, 285, and 290 models are primarily aimed at smaller to midsized boats while the DP (Duoprop) variants offer enhanced maneuverability and fuel efficiency. They feature a robust, corrosion-resistant construction, with the lower unit crafted from durable composite materials and the upper unit from aluminum. The Aquamatic drives are coupled with a variety of Volvo Penta gasoline and diesel engines, delivering power ranges from 135 to 435 horsepower. The MASTE (Marine Sterndrive Transmission Electronic) system, incorporated in later models, offers advanced features like shift-by-wire technology, electronic throttle control, and integrated diagnostics. This system enhances ease of operation and provides real-time monitoring of engine and drive parameters. With MASTE, the Aquamatic drives cater to a wide range of boat types, from compact runabouts to luxurious cruisers. Their versatility extends to diverse applications, including watersports, fishing, and leisure cruising. Volvo Penta's commitment to innovation and customer satisfaction is evident in the Aquamatic drives, ensuring a seamless and enjoyable boating experience for owners.