i have a 1973 7.5 hp eska seahawk model 1914A.... i was wondering it is air cooled and i have been running marine oil in it. do i need to flip it to normal chain saw oil??? ive been running 50:1 ratio and runs fine but when i get it in the water and give it gas in gear in spits and sputtards idk alot this is my first boat and motor so thanks for what ever someone can give me thinks .. and also where do i buy parts for it ???
