Home › Forum › Ask A Member › 1953 Johnson Seahorse 25 hp RD-15 not pumping water › Reply To: 1953 Johnson Seahorse 25 hp RD-15 not pumping water
I think you’re right about not being able to flip the plate. I have a 54 And up service manual that doesn’t include the 53. It seems like everything is the same or very similar. I did acquire this motor with the known pumping problem. So can anyone confirm if I need a water tube grommet on the 53 motor? There has been conflicting trains of thought on this for the 53. I see the 54 has one. I also see that the water pump housing is a bit different on the 54 while part hunting.
I will dump gear oil and inspect case for support bracket. Once that is verified should I make another convexity in plate or leave flat (as we hammered it flat after it was pushed by impeller malfunction)? Gonna call Ed Elliot for replacement parts for overhaul in the meantime.
Wondering if this motor has to be tested while fully submerged in the lake as opposed to a service tank due to short shaft??