Hi fokes, new member here. I bought the tractor knowing it had a heating problem, but run. Checking it out found water pump locked up and blowing air in radiator. Removed head and gasket was ok, further checking found small crack in #2 cylinder. checked specs one yanmar engine and found out that it was cast steel instead of cast iron. welder said that he could weld it but could not replace the seat. Any body have any suggestions. Thanks