OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Briggs & Stratton Engines I/C motor id

I have a John Deere self propelled and am curious as to whether or not it has a cast iron sleeve motor. I called John Deere distributors in Brissy and Briggs as well. None could assist except to say it is a 6HP unit. The motor has no stickers on the cowl or engine except a small B&S sticker on the fuel tank. The entire motor, tank and engine cowl is black. The mower is pretty much as it left the factory.

Model 12H802 Type 1769-B1 Code 00052259

Thanks