Saving Old Seagulls

Thanks, Chris. I'm glad I don't have to open the housing.

Jay

I'm restoring a Seagull, which I believe is a 40. The engine number is SJM9648. Is there a way to test the water pump without opening the lower unit (or running the engine)? If I blow air through the copper water tube, there is no resistance. What is the impeller made of? Is it centrifugal or ...