I have a 76 446 with bf-ms/3177e The tractor will not start or run unless you manually add gas ( i used a spray bottle ). My assumption is the fuel pump is bad. Fuel flows feeling from the gas line when pulled off carb. There is suction when the vacuum line is pulled off of front of carb. And the carb is dry when the tractor dies from lack of gas. It has the fuel pump on the carb. I want to bypass this and add an electric pump. I was reading this thread and am confused. Do I use the actual fuel inlet on side of carb or do I block that and use the vacuum port on the front? Thanks in advance!!!!