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 - Magic Moments - by Tyler J. Woods. Magic moments don’t just happen. You have to help them along. This morning, I got up early. It is my day off from my regular workweek and I had a lot of things to do. It’s fall, and with winter coming on, there is a lot of work to do before weather closes in.
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