They do not have factory stem seals. I always rebuild with PC style teflon slider oil control seals. Umbrella seals (though less directly effective) work well, and can be installed without removing the head. (use a piece of clothes line cotton rope in the cylinder to keep the valves up while removing the springs and retainers, to allow stem access. Using 30 wt oil as recommended from the factory back then, allowed less seepage down the stem than modern multi Vis, (do not go back to single wt oil, no need). I would give that a try, it is cheap and easy. I would also say that it could have a crack in the intake side of the intake ports allowing oil into a cylinder, but it would sure show on a plug reading to be only one cylinder. Jim
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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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