You need to take the rocker arm shaft apart. The tips will at the very least need resurfacing. Many times the shafts are worn, some times very badly along with the bushings in the rocker arms. If they are loose you have two problem. One is getting an accurate valve adjustment that will stay accurate, second is excess oil will be thrown over the top of the valves causing oil consumption and valve stem carbon. You can put valve seals on to control the oil but that won't help the adjustment part. Often over looked part of rebuilding an engine.
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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