Here is a close up of the centrifugal pump. The model is a Morita ME-5. I have the parts list that I got from a nice engineer in Japan. This photo is two years old, the suction hose has been changed since and the sealant paste replaced. The smaller hose goes out to cool the engine. The belts are new. The pulley on the engine is a 10 inch, on the pump is a 4 inch
