there are three adjustments on the carb
the slide needle , you can only get to this by unscrewing the top of the carb and removing the throttle cable and then taking the needle out of teh slide or butterfly.
second jet is a pilot jet , thats the tiny gold looking screw on the outside of the carb thats easy to see and righhhhhhhht there ( should be a spring in there ( im preety sure ) ) dont lose it.
the third and final jet is the main jet : the main jet can be reached by removing the 4 screws that hold the bottom portion of the carb on ( bowl ) in there smack dab in the center you will see a gold/bronze/copperish hexagon looking thing , that is your main jet . It should have numbers stamped on it .
If you are going to do some work on your shee i reccomend going with a clymers manual man , great way to learn everything while your taking a dump... also includes torque specs and good part break downs. If you dont get the book , check out the search button or jetting page on here , the top section has " info " pinned about carbs , thats where i learnd my majority of carbs.... besides trial a error .