did your carb kit not come with a lil half sheet of paper folde dup as a diagram?
in any case..i'd reccomend seperatingthe halves, removing air horn and float, especially if plastic.. then give a soak in a cleaner / dip pan.. then pull out.. blow out all passageways with air, and clean the rest with fine wire. guitar hi-e string works great if you know somebody that plays.
depending on the level of your kit, it may or may not come with new needles.
usually comes with throttle shaft seals, and choke packing.. etc..
if you remve any seats to repalce.. i'd reccomend a hollow ground screwdriver vs a spade tip.. though usually a spade tip will work...