Hi Ron, 2.6 - 5.2 Check out asecc http://www.asecc.com/data/briggs-horsepower.html Hope this helps Joe "Pip" Betz said that. jlb94 at juno.com - - - www.oldengine.org/members/betz ,-._,-. http://community.webshots.com/user/pipbetz \/)"(\/ " How is it possible for Americans to denounce (_o_) Communism and practice it simultaneously?"