Hello, I am new to outboards and just got a 1980 evinrude 9.9 it sat for 2 years and just started right up with the 2 year old gas! But no water coming out the telltail. Opened up the gearcase to find very little oil and it was coffee colored with water. I got a new pump and ordered a seal kit which I have to figure out how to install. How do you seal the cases back together? I saw no gaskets and I see no gasket in the water pump.