Hello I need some help. I have a hustler raptor with a 23 hp Briggs and Stratton professional. Had some issues and am now replacing the entire engine. The model number for the engine is 44u777-0008-g1. The code is 190221yg. I am trying to find the shaft size so I can order the correct engine but with no luck. I’m finding the part number for the crankshaft 597789. Can anyone help me out as to finding the shaft size please?