Kudos to the mfg who put an "oil sensor" on any AC tractor, or water-cooled for that matter. You have not said if it is oil pressure or oil temp ( perhaps you don't know) . If you're trying to end its days, defeating an engine shutoff feature due to low oil pressure or high oil temp will do it for you.
Scag uses different configs with different machines. The Turf Tiger has an oil pressure sensor and the Tiger cat just has a simple "low oil level" sensor which is nothing more than a float type of switch that sits submerged in the oil in the bottom of the crank case