I just picked up a 79 4hp eska, i pulled carb cleaned it, pulled the plate behind the carb and cleansed it, had some dirt in it and the crank case. I also pulled the head to make sure there was no damage. But even after all that it still wont run, and the carb was clean except the bowl had some dried up dirt. I'm hoping someone can tell me all the needle adjustments or how to fix it. THANJS FOR THE HELP