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Thank you for your help and suggestions. The problem turned out to be fouling the plugs. The valve on the gas tank was leaking and the needle valve was not stopping the fuel flow so it was flooded when I attempted to start it. I replaced the valve and bowl on the tank and cleaned and reassembled the carburetor. It started the first time I tried and it has started each time I have tried it again. With a six foot blade the little tractor just moves along without any strain as I grade an old dirt road. My son and I found this 8N covered with grass and weeds in a field. It had not been used in a couple of years and the front tires were flat and the rear tires were badly cracked. The sheet metal was badly rusted and had holes in the hood and fenders. We gave $900.00 for the tractor, a two bottom mold board plow, a grader blade, and a rotary mower. We filled it with gasoline, changed the oil and filter and put a battery on it. It started but it was burning oil at a faster rate than it was burning gas. I tore it down and when I removed the head I found that the sleeves had been removed from the cylinders. The pistons just fell out when I removed the rod caps. I also discovered that the block had been drilled on the left side to mount the generator. When they drilled they drilled into the water jacket of the block. The bolts holding the generator bracket had a little bit of antifreeze leaking around them. However, the block wasn't cracked. Since we had a 9N that we were ready to assemble and the block on that tractor had several cracks we used this block on the 9N. When we completed the 9N we sold it. The man who bought the 9N mows his acreage with it and he is happy with it. I found another block and we began to reassemble this tractor. We had to find some fenders and we Bondo-ed the hood and painted them. If we don't sell it as it is, we will eventually replace the hood. Anyway the little orphan looks proud again and it runs great.
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