Which Engine?
If you looked at them at LOWE's or Home Depot, they are ALL the same tractor, made by the same company..
Craftsman, Deere, Kubota.. Yardman.. TroyBilt If you look close enough at almost all of them, you'll see other then the 'skin' they are identical lawnmowers/ tractors...
We discussed this last year in a thread, but I don't recall the name of the Company.... AYD? MTD? Something like that.
All the big companies sell their name under license to them..
That's why you have to go to a dealer to find a 'true' Deere, of Cub Cadet, or Kubota.. and wouldn't guarantee that some of them at the dealer aren't the same as the ones at the BoxStores.
I'm betting you aren't going to find a Yanmar diesel in ANY of the tractors at Lowe's, Best Buy or Sears.
AYP American Yard Products. They make all the big box store riding mowers. The problem is not so much the engine. Briggs makes a darn good engine. So does Kohler and Honda. Tecumseh motos are not nearly as good (I have 3 of them on differnt pieces of equipment). The frames and axles aren't built to last. The hydrostatic transmissions aren't very robust. The frame on my 2002 Craftsman twists like a bucking bronco as I ride around the yard cutting the grass. The hydro tranny on it doesn't work right when going up hill, it sometimes gives up and I roll back downhill. The gray Craftsman mowers are heavier duty than the green. I would never buy another green one.
My current inventory:
1969 Sears Custom 10, no mower deck, not currently running, needs rewiring
1972 Sears Suburban garden tractor. 42" deck This thing ROCKS! 1/4" steel frame. Only plastic is in the dash trim.
199? JD rear engine riding mower, 36"(?) deck Father-in-law replaced the motor (hole in the block) by combining parts from original motor and parts from a barn motor to make 1 good one. Giving this to my friend in Waldorf with the flatter yard.
1994 Sears Lawn Tractor (gray) This thing is heafty, but not up to the standards of my 1969/72 tractors. Father-in-law welded up the busted frame and rebuilt the mower deck. This one is going to be my principle mower until the deck rusts out the rest of the way.
2002 LT1000 Sears Lawn Tractor. AYP piece of junk.
Plus 3 push mowers, one being a 2-cycle lawnboy that is currently out of commission (probably needs the carb rebuilt).