I am new to the forum and I tried some searches and cannot come up with the information I need.
I have a 448, serial number 14114664, with the "Nikki 146-0414" carb. I am having the dreaded surging which goes away under load and by using the choke at idle. My father and I are in the process of troubleshooting and are looking for recommendations as to the best course of action. Should we pull the intake manifold and the carb off and rebuild, or is it better to find another carb? Also where is the best place to obtain gaskets for both intake and carb? Any suggestions or recommendations are greatly appreciated. We love the tractor and don't want to damage the engine by running it too lean.