Posted by mtown on 08/31/17 - 4:44 AM
#3
There is an excellent youtube video. How to clean carb on a Yamaha 2 stroke outboard. I think it is actually a 40 hp that he works on.
I watched it and was able to completely re-do the carbs on my 70 hp and 90 hp with no problems. You probably need to clean the jets or replace them. Cleaning/draining the bowl will probably not fix any issues unless they are really full of gelled fuel.