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 - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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