843 was the number in the era the 7700 came out, and for quite some time after that. They were very popular. Don't know if you are looking for one or not, but there are pros and cons to the open chain drive on the head or 'oil bath'drive. With the newer style oil bath you hardly ever have to replace the drive chains, but if you have to pull the shaft to work on a gear box you have to mess with a gasket and seal, pus the oil. The old non-oil bath style required repacement of the chain and sprockets more often, but it's super simple to do and pulling the drive shaft is less time consuming. Jim
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Today's Featured Article - An AC Model M Crawler - by Anthony West. Neil Atkins is a man in his late thirties, a mild and patient character who talks fondly of his farming heritage. He farms around a hundred and fifty acres of arable land, in a village called Southam, located just outside Leamington Spa in Warwickshire. The soil is a rich dark brown and is well looked after. unlike some areas in the midlands it is also fairly flat, broken only by hedgerows and the occasional valley and brook. A copse of wildbreaking silver birch and oak trees surround the top si
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