I bought a used M54 TANK with 23hp Kawasaki engine on it. It had 202 hrs. on it and I love it. I never had a zero turn before. I now have 220 hrs on it. I have 3 acres of grass and I always had craftsman riding mowers. It takes a little gettin' used to the zero turn mowers if you only used regular tractors.
Man can this thing cut. I love it. It's really heavy duty like a TANK, but it also rides like a TANK. I just had back surgery 5 months ago so I decided to purchase a seat suspension under the seat. Now it rides pretty nice.
I went over the whole thing after I bought it and put new blades on it and greased everything. A lot of grease points (like about 25). I love the Kawasaki motor; no backfiring when shutting down like the Craftsman's, Kohler motor (junk).
I couldn't be more pleased unless it had more than 23 hp. It strains just a little in high thick grass, but gets the job done and leaves a beautiful cut; best cut I ever had.
This is a real heavy duty machine. I can't say enough about it. It cuts up to 12 mph. I can't cut that fast though because my ground is not smooth. I have my before pic when I bought it and after pics when I went over it and restored it.