MARINER - 25 hp ('80-'84), 28 hp 2-stroke ('76-'79), 30 hp 2-stroke ('79-'90). YAMAHA - 20 hp ('96-'97), 25 hp ('80 & Newer), F25 4-stroke (2000 & newer), 30 hp ('79 & Newer), F30 4-stroke (2001 & newer). can also order propellers upon request