You can't - it's all controlled from the PCM.
The idle is not adjustible. You may need to clean the throttle plate to improve the idle.
You adjust idle with idle timing
how to adjust idle on 2001 legacy
1978 80 Mercury Outboard IDLE ADJUSTMENT
The idle on a 2001 24 valve is computer controlled and is not adjustable.
No, it is computer controlled.
Idle speed is set by the PCM and IS NOT ADJUSTABLE.
You don't. The computer constantly monitors and adjusts the idle speed. If the idle speed it too low, the ISC motor is bad or disconnected. If too hight, the ISC motor is bad or the computer is receiving bad input (as coolant temperature, ETC), or there is a vacuum leak.
you can`t adjust the idle speed manualy,it has to be done through the ecu via a main dealer diagnostic computer.
your tps or throttle position sensor
It should be on the carb!
Take it to the dealer