This manual covers the Johnson Evinrude 20 Hp outboard motor, spanning production years from 1956 through 1970. Designed for reliable performance and durability, these engines represent a significant era in marine propulsion. Their robust construction and straightforward engineering have made them a trusted choice for various boating applications. This comprehensive guide details the specific features and operational characteristics that define the Johnson Evinrude 20 Hp models. The purpose of this manual is to provide detailed information for the maintenance, repair, and servicing of your Johnson Evinrude 20 Hp outboard motor. It includes essential technical specifications, step-by-step repair procedures, troubleshooting guidance, and safety recommendations. By following the instructions within this manual, owners, technicians, and mechanics can ensure their engine operates at peak efficiency and longevity, addressing potential issues effectively and maintaining the integrity of the unit.