To adjust the throttle cable, first open the hood of the car and locate the cable. Then, adjust the screws on either side of the cable. Following that, tighten the cable so that it is taut and there is no slack, but it is not over tight.
To adjust the kickdown cable, you'll need to pull up on the release and open the throttle all the way. After that, pull the outer cable housing tight and adjust the clamp. When you are finished, the outer housing should have no slack.