1210 shut off on me

[ramman16248]

Ok, I got my 1210 running pretty well. It hadn't been used in 15 years. It is serviced and mowing now. I used it tonight for the first "real mowing" test.
It has a 38 inch deck. I mowed for about 30 minutes. It smoked a little, but I figured it was from setting so long. It seemed to clear up after about 3 minutes. It ran great for quite a while. I was mowing some thick grass and it was damp.. I would't say wet, it was damp. The think just up and shut off. I lifted the hood and you could see mild smoke rising up through the hood. i traced it down to being just some residual oil that was on the block for years. ( As a matter of fact it dripped off a little. I had previously sprayed it with carb cleaner and the oil ran down to the frame) I left the tractor sit for about 5 or 6 minutes. It seemed to cool off a little and it fired it back up. I drove it into my driveway and quickly opened the hood and took off the side panels so it could cool off nicely. The thing was still hot to the touch 20 minutes after I took everything back off. I waited about an hour and thiongs ere warm, but almost air temp. I sprayed the motor with some more de-greaser and pressure washed the old oil off. I also checked the oil to make sure it was ok. ( I knew it had just been changed.) The only thing I could fing was it was a little over full of oil. ( I am talking about 1/4 inch over the full mark on the dipstick.)

Would the extra oil cause it to over heat? Or did I just overwork the tractor and is got hot and shut off? I mowed great up until it shut down. I thought the old oil that was on the block my have made the heating problem worse, so I washed it off.) When I dried the tractor of,f( Yes, I clean themand chamois the eash time I use them), It started right up and ran great. Any thoughts?