This comprehensive workshop service repair manual provides detailed instructions and guidance for servicing and repairing Mercury Mercruiser GM V8 454 CID 7.4L and 502 CID 8.2L marine engines manufactured between 1998 and 2001. The manual covers all models, engines, trim levels, and transmission types. The manual includes step-by-step instructions with illustrations for every repair and service procedure. It covers a wide range of topics, including engine diagnostics, troubleshooting, maintenance, and complete overhaul procedures. Whether you are a seasoned mechanic or a DIY enthusiast, this manual will empower you to perform repairs and maintenance on your Mercury Mercruiser engine with confidence. This manual is designed for ease of use and can be accessed on any computer, tablet, or smartphone.

The Mercury Mercruiser GM V8 454 CID 7.4L, 502 CID 8.2L marine engine, produced from 1998 to 2001, was a powerhouse in the boating world. These robust engines, based on the legendary Chevrolet big block V8, were known for their reliability, torque, and power. The 454 CID (7.4L) and 502 CID (8.2L) displacements offered a range of power options, catering to a wide variety of vessels. The 454 boasted impressive horsepower and torque outputs, while the larger 502 delivered even more punch, making it ideal for high-performance applications. These engines featured a cast iron block and heads, ensuring durability and heat resistance, crucial for marine environments. The Mercruiser GM V8s were also equipped with advanced features like fuel injection, a high-flow intake manifold, and a robust cooling system, all contributing to their performance and longevity. These powerful engines were built to handle the demanding conditions of marine applications, featuring robust internal components and a robust construction. They were designed for smooth operation at high RPMs, making them perfect for powering a variety of boats, from cruisers to high-performance sport boats. The Mercruiser GM V8 454 and 502 engines were known for their dependability and ease of maintenance, ensuring years of reliable service. Their popularity in the marine market was due to their impressive power output, durability, and overall value. Owning a boat powered by one of these engines meant experiencing the thrill of effortless acceleration and the confidence of knowing your engine was built to last.