This manual covers the Yamaha 2SK outboard motor, manufactured in 1985. Engineered for marine propulsion, this 2-stroke engine embodies Yamaha's commitment to reliability and performance. Its robust design and efficient operation have made it a trusted choice for a variety of maritime applications. Understanding and maintaining this unit is key to its longevity and consistent performance on the water. This comprehensive Service Repair Maintenance manual provides detailed guidance for owners and technicians. It includes step-by-step instructions for assembly and disassembly, thorough inspection operations, and essential repair procedures. Technical explanations are presented comprehensively, supported by exploded diagrams preceding disassembly sections. This resource is designed to facilitate effective maintenance, troubleshooting, and repair, ensuring the Yamaha 2SK outboard motor operates at its peak efficiency.