The carb on this machine looks complicated but it is pretty easy to get off. You just need a bunch of different tools, Flathead and Phillips Screwdriver as well as a 10mm socket. I looked everywhere on the machine and could not find the model number for the push mower but I have the carb part number below if you are replacing.
Engine: 126T02-0224-B1
Carburetor: 799866 OR 799871