Okay I have owned this 1977 mariner for 6 years and have the same re occurring problem, when running its okay and also when it takes of once you go over the 50 kls an hour it runs as if the fuel is running out because the plunger is very soft. I've replaced fuel pump plugs cleaned carbies, replaced spark plugs replaced power pack and just don't know what more to do ? replaced reeds, doesnt like idle either some times
