Does 4.8 gm motor have afm?

No, a 4.8-gram motor is far too small to have an Air Fuel Meter (AFM). AFMs are used in larger internal combustion engines to measure the amount of air entering the engine for fuel injection control. A 4.8-gram motor is likely a tiny electric motor used in applications like small toys, robotics, or model aircraft, which don't use combustion and therefore don't need an AFM.