Re: 90hp johnson
Cleaning the carbs on a two cycle outboard means removing the carbs and disassembling them, completely cleaning inside and out, then reassembling. Usually, it is best to rebuild the carbs while you are at it, kits aren't too expensive.
On that motor it is not a very difficult task, just pay attention to how things came apart and be sure to put them back that way. Most folks with a reasonable amount of mechanical aptitude should be able to pull off a carb rebuild.
