Can anyone tell me wher does the cooling water exit on 1973 6 hp fisherman? I just bought this kicker, fired it up in a bucket of water 2 feet above prop, didnt see any water exit anywhere so shut it off. block did not get hot too touch. How hard is impeller to RAR on this guy? also anyone know wher i canm get an extra prop for it. the one on it is 2 blade plastic, 8X71/4