UppUdate: Finally got to use the new mower. Nice and quiet, as expected. Self-propel is a little goofy, with a delay between squeezing the handle and movement. Also the available speeds are either too slow or too fast, but I can live with that. Used about half the battery to do front and back yards, so my concern there was misplaced.
Put the Honda's carcass out for the scrappers to take, and stole the wheels (with ball bearings) for the generator. Anything to make that hog easier to move.