| You're gonna hafta take the tank OUT of the tractor! Fill it with pebbles, and nuts and bolts, and industrial strength rust remover
solution, and shake it around a LOT. Then dump all that out and dry it. Then get a can of "pour-in gastank sealer" from an auto repair supplies place, and "line" the inside of the tank with it.|
Otherwise, you will just keep having the SAME trouble!!