This manual covers the Yamaha 5LK Outboard, a 1985 model representing a specific iteration of its first-generation design. Engineered for reliable performance, this 2-stroke, inline, water-cooled outboard delivers 5 horsepower, making it suitable for a variety of light marine applications. Its robust construction and straightforward design are hallmarks of Yamaha's commitment to quality and durability in marine propulsion. This comprehensive Service Repair Maintenance Manual provides essential information for the upkeep and repair of your Yamaha 5LK Outboard. It details disassembly, repair, assembly, and inspection procedures, supported by exploded diagrams to aid in understanding. Covered topics include maintenance schedules for fuel mixture, gear oil, spark plugs, anodes, fuel filters, and impellers, alongside technical specifications. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their outboard motor.