How to properly clean Carbs? I have a 1975 Johnson 135hp Model# 135ELS75E I think my carbs are cloged. I am not getting any fuel to my spark plugs And getting fuel up to fuel pump thinga ma jig. Even when i squeeze the hell out of the primer ball. (Solid as a rock) but after that not much at all in resiviors. I am afraid of taking the whole carb apart b/c do'nt want to mess with fuel/air mixture screws. Any help is deeply appreciated.