Where the linkage pooped out on the first two machines is under a plastic cover held on by some funky star drive screws. I didn't want to take them apart because I was returning them.
The Home Depot machines with the Briggs engine have the foot operated hydrostatic speed control. The Dealer version with the Kohler engine has the hydrostatic speed control on the fender.
From what I now understand, the machines sold by the "Big Box" store, in order to give a lower price, redesigned the machines using less expensive parts reducing quality.
I just want a machine that will last for fifteen years.
Update: last night when it was to be delivered the driver got lost and had the wrong phone number. I finally got my new toy about 10:00 and now I get to mow. The grass is so long I'll need to take at least two passes possibly three.