I'm at a loss on how to replace the seal, can someone draw me a picture

Or maybe I will have to just keep adding fluid, my dip wire doesn't show a loss when I check it.
BTW: I left the ignition on in turning off the fuel and running the carburetor dry; now the new battery is weak even with 10 hrs of charging. My refractometer says "needs a charge" at the bottom of the spectrum, even though I've charged it! And my generator gauge might be bad, as it hardly moves. I have another gauge, but how does one check the generator output with a meter?
I may have to start a new thread on this one?
