The Yamaha ProV, a V6 Excel generation model from 1989, represents a robust and reliable marine engine designed for a range of demanding applications. Featuring a powerful V6 configuration, this engine typically delivers between 150 and 200 horsepower, making it suitable for various watercraft. Its engineering emphasizes durability and performance, incorporating a CDI ignition system, water-cooling, and either oil injection or pre-mix lubrication for efficient operation. The ProV is known for its consistent power delivery and the quality associated with Yamaha marine products of this era. This comprehensive Service Repair Workshop Manual in English provides essential information for the maintenance and repair of the Yamaha ProV. It covers critical areas including detailed troubleshooting procedures for common issues, step-by-step guidance for component replacement, and specific maintenance schedules. The manual also includes technical specifications, fluid capacities, and lists of recommended consumables such as spark plugs and fuel types. With hundreds of detailed photographs and exploded diagrams, this resource is an invaluable tool for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their 1989 Yamaha ProV engine.