1977 John Deere 60 Kohler 17HP Engine. 1978 John Deere 60 Kohler 17HP Engine. 1979 John Deere 60 Kohler 17HP Engine. 1980 John Deere 60 Kohler 17HP Engine. 1981 John Deere 60 Kohler 17HP Engine. 1982 John Deere 60 Kohler 17HP Engine.