OUA power unit?

Sit down and relax, get a glass of your favorite drink, take your meds if you need to. This isn't that big of a deal. You are in old Uncle Jim's hands now and I'll treat you like I'm giving you a massage wearing velvet gloves. First, I think you are misreading your unit serial plate. I believe it should read CUA. That would be the unit number. Is this plate riveted to the left front side of the frame? You indicate you have a plate that gives the engine size, is that plate riveted to the left front side of the crankcase of the engine? That is your engine number plate and should say the model, in your case a CE, and the serial number for the engine. The size you give is correct for a CE engine. Go out and very carefully check both plates and re-post with ALL the info on each one. I'm sure you have a model CU series power unit with a model CE engine. If you have any more questions feel free to ask as I have both parts and owners manuals. Your engine is 425 cubic inches and runs at 1300 r.p.m. and uses two of the same carbs as used on the U tractor. See, that didn't hurt too bad, did it?

Jim