This manual covers Outboard Motors manufactured between 1973 and 1989, encompassing models from 48 HP to 235 HP, including those with Sea Drives. These robust 2-stroke outboard engines, available in V4 and V6 configurations, are known for their reliable performance on the water. Whether you are a recreational boater or a commercial operator, understanding the intricacies of your motor ensures optimal function and longevity, making it a dependable partner for all your aquatic adventures. The purpose of this comprehensive service manual is to provide detailed guidance for the maintenance, repair, and troubleshooting of your outboard motor. It includes essential information on general maintenance, tune-up procedures, fuel and ignition systems, power head and gearcase service, as well as specialized sections for Sea Drives and power trim systems. By following the clear, step-by-step instructions and referencing the included technical specifications and wiring diagrams, owners and technicians can effectively maintain their engines, prevent potential issues, and ensure peak operational efficiency.