Is there a dyno handy? The only way to know what the tractor is doing is to load her down and read the HP. Then tweak the timing for almost max HP without detonation. And lean the mixture until it starts to loose a couple of HP. Somebody may have the mixtures screws out too far, the aircleaner plugged, the choke blade not all the way open. You can't tell either unless the hose is pulled off the carb air inlet and you actually look. The centrifugal advance could be stuck as well. Is there an accelerator pump on that carb. Back off on the stroke until the engine almost stumbles on acceleration. Some tinkerers set the stroke as if they were racing the 1/4 mile.
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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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