The idle adjustment screw (flat-head/standard) is located on the top left of the throttle body. There may be caulk covering the screw that will have to be removed to access it. Use a long screwdriver to turn the screw while the engine is running. Make small adjustments and then rev the engine a few times and let it return to idle for the most accuracy. Keep adjusting until you reach the appropriate range. Normal idle is around 700-800 RPMs.