What is the proper way to adjust the throttle body and how many RPM's should it idle at?

 

Idle is 800 RPMs which is the needle just above the 750 mark on the tach for me (confirmed by the emissions test computer). Adjust the idle with the screw that faces towards you - tightening it in will lower RPMs and loosening it will raise them.

 

Just for your info, I idle at 750 rpm when it is warm outside, and just slightly higher in the winter time (as if SC really has a winter!).