I noticed that original 660 advertisements state that the pump has a lubrication system. I am not certain what the ad is referring to. I see several spring loaded "buttons" that are located on the positive stop gear box case where oil can be squirted. Is that the lubrication system?

I made a gate valve handle out of wood and then had it cast out of aluminum. Since the pump was a wet hose model, I am not sure why it has a gate valve.