I have to replace the sump gasket on my 22hp V twin. It’s been leaking for a couple of years and the engine is absolutely filthy with oily dirt and grass residue. I have it upside down on my work bench and am severely tempted to give it a spray of engine degreaser and then hose it off but I’m really wary of water collecting in the flywheel and ruining the stator or maybe the coils. Am I being paranoid? If not then how do those of you who do this professionally get engines clean before repairing them? I’m sort of afraid to open it up for fear of contaminating the crankcase.