I agree with The Vet. I dare say at least 90% of these have been turned up, and it doesn't seem to bother their longevity. 1972 and 1973 models were rated at 133 PTO HP, and 1974, 75, and 76 models were around 146. Many of them used on farms are putting out over 200 HP. Unless it smokes excessively or you want to use a little less fuel, I think I'd leave it the way it is. You will need a dynomometer to to get it reset correctly.
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Today's Featured Article - A Farmall Story - by Ed Meadors. The year was 1978. Our young family had recently moved to rural Chesapeake, Virginia to a plot of land which would finally allow us to realize our dreams of a huge garden, critters and more lawn and pasture than we would ever use! We needed a TRACTOR; not a riding mower or tractor wannabe, but a real TRACTOR. The answer to our needs materialized in the form of a '44 Farmall A, complete with cultivators, discs, single plow, a 5ft.Woods belly mower and one, mounted spare 9.00x24 rear wheel.
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