Pull out the pickup tube. There is a fine screen on it. There is also a drain on the bottom of the tank. Drain it, flush it with some gas. It is hard to flush the tank out with it in the Morgan. But by pouring a pint of gas in and draining it out into a glass jar, You might find out how bad it is. Taking the tank out is easy except rusty fasteners. Tank drops out the bottom. The boards that hold the tank are cut in such a fashion that You can wiggle them out. If You think it is a go install gas filters in the back by the tank and change them quite often. Fuel hoses are probably rotten, replace them. Old dirty gas must be disposed properly, find out how this is done in your locality.
