Here's what I was taught for a C172 runup:
-1200rpm
-T&P green
-Mixture rich
-1700rpm
-Suction: 4.5-6 inches
-Alternator load: All electrics on, flaps moving, charge meter should stay within 1 needle-width of 0.
-Mags: Loss of max 125rpm on single mag, L&R within 50rpm of each other.
-Carb heat: Drop in rpm
Mixture: Look for rpm to rise then drop with leaning.
-Slow idle: Engine doesn't quit
-1100rpm
-Carb heat: Off, rpm should rise by 50-100rpm.