If you have a really big yard, a Farmall Cub, A, B, or an Allis Chalmers B or C with a Woods 59 inch deck might work.
John Deere had the 318, an older hydrostatic drive that is still widely considered the best garden tractor ever made. Last made in 1992.
The John Deere 216 had a 16 horsepower Kohler engine, four speed manual transaxle with a variable speed setup, and 47 inch deck. The same tractor was available as the 214, 212, and 210 (less horsepower) and all of those tractors could use the 47 inch deck. Most parts are still available from Deere.
Sears had a Suburban with a 16 horsepower Onan twin cylinder engine and a manual transmission. Parts can be difficult and expensive for the Onan. Wheel Horse and Simplicity had manual transmission tractors.