If you have carbon under a valve, shoot some kerosene in the air inlet on the carb and kill the engine with it. Then while it is soaking, take off the valve cover and turn all the valves that are closed several times,then roll the engine a bit and turn the rest of the valves. You should be able to do it by hand. Sometimes a light tap on the valve stem with a rubber hammer will work too but don't hit too hard or you can knock the keepers out. That should knock off the carbon if the valve isn't already burned. Try that and see if it works, you might get lucky and not have to pull the head. As far as turning over slow goes, Get new heavy gauge like 00 gauge cables and clean the connections on everything, switch, starter, grounds etc. I drove a 49 chevy truck with 6 V with the original cables on it still, for 10 years and it was hard to start hot and slow when cold. I tried everything but it always would spin slow. One day I pulled the cable off to clean it and the end just fell off. The pos side cable end was hollow inside but looked very good shape on the outside! Put new cable on and it about flipped the truck over it spun so fast! That was the end of the hot starting problem as well. If that doesn't do it, then take the starter to a good auto parts store and have them see how many amps it pulls. Too many amps will kill the coil voltage and if it does spark, it will be a weak one. If after all that is checked and it takes 10 second bursts to fire up I would bet the float in the carb is set a bit low and it is taking too long to pull the fuel up into the venturi. If it has been started and warmed up it should fire up in less than a full turn (possibly as little as a 1/4 turn) if everything is right and working like it should, even with points. Keep at it, you will have it working better than ever with a little digging and checking. Sometimes it is a little thing that can bug us for years, like the batt cable on my old truck. It "looked in great shape" but it wasn't where it counted.
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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