For the choke cable you just unscrew it from the carb. It will take either a 12 or a 14mm wrench.
For the throttle, you remove the throttle housing cover, hold the wire cable while rotating the throttle arm, then pull the cable out. After that, you unhook the cable from the carb. body.
Float needle, remove carb. bowl, remove float and needle, inspect the tip for any grooves or indentations, clean needle tip and maybe polish the brass seat with a Q-tip and valve lapping compound. Blow out the fuel intake and needle seat real good with carb. cleaner and air. Should be good to go!!