This manual covers the Johnson Evinrude 140 HP Outboard motor, produced between 1973 and 1990. These engines are known for their robust design and reliable performance, making them a popular choice for a wide range of marine applications. This guide provides comprehensive information to ensure optimal operation and longevity of your outboard motor. The purpose of this Factory Service Repair Manual is to provide detailed instructions for maintenance, repair, and troubleshooting of your Johnson Evinrude 140 HP Outboard. It includes essential information on routine maintenance, lubrication schedules, tune-up procedures, and detailed repair steps for major components such as the powerhead and gearcase. Additionally, this manual contains diagnostic procedures, electrical wiring diagrams, and specifications to assist owners, mechanics, and technicians in effectively servicing the engine.