I think it was 3 years ago had a to change lower unit. Tried motor near shop that did install did not pump to good went back and told mechanic think the pump was not working. He said naw that is a new pump on the unit i did not agree. So we talked about it and he won, was pumping about 30 pounds. Decided to change it. For three years that baby was not pumping to capasity. Now am pumping 42 lbs motor seems to be running better.