high idle

[christ0ph]

hi guys, i have a 72 240 and i have a question about the idle. the car starts at about 700 rpms but when it warms up, it runs at 1100 rpms. I did a quick search on the forums and i found that the manual say 650 is good but most people run at 800-900? How do i go about readjusting the idle? Thanks in advanced guys.