the two on the side the one that sticks out more is the fuel (idle) screw, recessed one is the air scrwe . after sitting that long it relly needs to be dipped / blown out or boath (predurribly both) with out the filter you wint be able to properly set the idle and definately do not ride it without a filter mikunies (your carborator brand) relly dont like it if you want if you want to do some Q and A I can give you my #.