So, popping everything apart is child's play. I first foam-cannoned the underside to get rid of any poison ivy oil.
I then pulled the cutterpin, which was the hardest thing to do, put a 1-13/16" socket on a 3/4" drive impact and winged the nut off.
I then threaded the nut most of the way back on but did not bottom it out. I then took a 3' pry bar behind the stump jumper, applied a bunch of pressure (being heavy has advantages, heh!) and whacked the nut with a three-pound hammer, and the stump jumper popped loose with no fear of it falling off since it was still retained by the loose nut (no photos because I was using both hands).
Super easy, no pullers are needed.
Basically, my technique was exactly like removing front-end parts and stuck clutches on power equipment.
The good news is that I had thought that at the very least, the bottom bearing had shelled to mess up the lower shaft seal. Maybe, but the play isn't that bad, so despite the new triple seal costing $80 (without dinner and a movie first), I'm going to punt on removing the gearbox to pull the bearings out and clean up the output shaft with 600, 1000, 1500 grit sand paper if a can catch a fingernail* and then fill the gearbox back up with cornhead grease when I replace the seal and seal protector.
In the meantime, tomorrow morning I'm going in for a knee operation, so if there is a gap in my reassembly photos, knee operation, see. The seals are expected to arrive next week.
* Believe it or not, a fingernail run across a smooth surface can catch down to about a 5 ten-thousandth deviation.
Trees work good. Your stump jumper looks different than my solid one. Can you get the fingers of a regular gear puller through the openings to pull it?
