Reply To: Mercury KE4 impeller help needed

[richardg]

The water pump cartridge in the lower unit has to be properly aligned for the pump to suck through the inlet holes and then compress the blades as they approach the discharge point. With the water pump cover off does the water pump housing seem to be aligned with all the water inlet holes?

Are the rubber sealing washer and metal compression washer in place where the copper tube slides into the lower unit?