I mow my yard with a 1978 Allis Chalmers 720. It, and most other AC mowers, were made by Simplicity. Mine is the same thing as a Simplicity 9020. The only downfall is the lack of available parts. They were way ahead of their time. It has a 3 speed range box and is hydrostatic on top of that. There were tons of hydraulic accessories,, even a front end loader. PTO in the rear was an option as well as front hydraulic remotes. The deck is 60" and it raised and lowered via cables that run to the hydraulic 3 pt hitch. The deck is located by two arms that mount it to the front axle. It rides on 6 rollers across the back so it mows as good as anything you'll find today. I got lucky and found a warehouse in Wisconsin that had about 50 new old stock blades and bought two sets of them. It had 7.50-16 Ag tires on it when i bought it. I found some turf tires with wheels on ebay for $200. Put them on and all it would do is spin. Wheels were 15x10 and tires were 31x12.50s so after some thought, I remembered who made a 31x12.50 that would work great and I couldn't be any happier with the half tread boggers. I bought it with 800 hrs. It was originally powered by a 19.9 hp Onan. I had it on a steep hill and the Onan let go. Prob ran it low on oil. There's a company called Small Engine Warehouse that sells repower kits for the most popular older models. Thanks to them, mine is now powered by a new 23 hp B&S Vanguard. It was a direct bolt swap. Even had the wiring harness adapter and a muffler that put the exhaust out in the stock location.
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