Model 402-500-700 -- 1977 ~ 1984 25 HP Bigfoot (4-Stroke) -- 1999 ~ 30 HP (2 & 4-Stroke) -- 1994 ~ 30 HP (Sea Pro/Marathon) -- 1994 ~ 35 HP -- 1984 ~ 1989 40 HP (2 & 4-Stroke)(Not Bigfoot) -- 1977 ~ 40 HP (Sea Pro/Marathon) -- 1986 ~ 1989 45 HP -- 1986 ~ 1989 48 HP (Mariner) -- All Years 50 HP (2 & 4-Stroke)(Not Bigfoot) -- 1977 ~ 55 HP (Mercury/Sea Pro/Marathon) -- 1995 ~ 60 HP (Not Bigfoot or Sea Pro) -- 1978 ~ 60 HP (2-Stroke) -- 1978 ~ 70 HP -- ~ 1983