Hi
I'm a new (old) Dixon ZTR owner, and am trying to find the specifics of this beast. Judging from the serial # (DM-42-553##), I can tell it was produced in 1992, but am unsure as to whether it's a 428, 429, 503, or 542. It has a 42" White 3 blade Deck, P/N 140619. I also got the 48" snow blade...