This manual pertains to the 1987 Yamaha Outboard PRO50LH. Engineered for reliability and performance, this outboard motor represents a significant advancement in marine propulsion technology for its production year. Its robust construction and innovative design ensure dependable operation across a variety of aquatic conditions, making it suitable for both recreational and professional use. The PRO50LH is recognized for its efficient power delivery and durable components, reflecting Yamaha's commitment to quality craftsmanship.

This comprehensive service manual provides in-depth coverage for all aspects of the 1987 Yamaha Outboard PRO50LH. It details general information, periodic inspections and adjustments, and specific procedures for the fuel system, power unit, lower unit, bracket unit, and electrical system. Included are detailed specifications, troubleshooting guides, extensive wiring and circuit diagrams, illustrations, photographs, and step-by-step instructions. This resource is designed to assist owners, mechanics, and technicians in performing maintenance, diagnostics, and repairs to ensure the optimal performance and longevity of the vehicle.