This engine utilized a single inline four barrel side draft carburetor to make 90 horsepower. In 1964 a second V4, with minor changes, was introduced. This engine is most commonly identified by its single 2-barrel downdraft carburetor. The first V4 was rated at 50 horsepower and the basic engine design was manufactured from 1958-1968 reaching a pinnacle of 85 horsepower in 1968. Prior to 1958 all Johnson/Evinrude engines were either a one or two-cylinder. They can be broken down into four distinct generations. If looked at from a point of engine design changes and the year of these changes. The history of the Johnson/Evinrude V4 product line is very complex but can be greatly simplified This increased knowledge can have a tremendous effect on a technician's self-confidence. Twenty year old technicians may find themselves working on outboard motors that are ten years older than they are! A timeline of the changes and improvements to a manufacturer's product line can put everything into perspective for a technician. Because many outboards are only used a few times each summer, they may last for 30 years or more. One of the most daunting tasks a young outboard technician encounters is sorting out all of the different models throughout the years.
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