i took the boat out today and ti ahas a miss at low speed and idle but it runs get at higher rpms so my question is could it be the low speed jet or is the fuel mix to rich hope this is enough info thanks in advance
If you could give your model no. it would be a big help, I might suggest a decarb and then new plugs, maybe even a rebuild on the carb and a link and sink, The sea king experts will be along hopefully and give you better advice.
My suggestion is to at least try adjusting the low speed needle (assuming it has one) before "fixing" something that isn't even broken. If set too lean, it will cause a heavy missfire at idle, often called a "lean sneeze".