The main thing that stress the head is not allowing the engine to warm up before using it and not allowing it to cool down long enough before shutting down . And always shut down on the diesel side . Switching back to gas only heats the head back up. Now as to how much to twist the screw do it a half turn at a time till ya feel your comfortable with the set . When i had my 450 D i had put center punch marks on the threads for several different settings and this was done while the pump was on the pump stand . I ran mine at around 75-80 Hp. for farming and for the pulls it was backed way out . Yea she did smoke while plowing as one neighbor said he knew how many rounds we had made in the field on a still day by the rings of smoke hanging in the air.
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Today's Featured Article - Product Review: Electronic Ignition - by Staff. Oil, for example has come a long way in the last 50 years and I don't use anything but the latest API grade available. I've heard the arguments for non-detergent oils but would never trade it for today's formulations. Paint is another, the modern acrylic enamels are great for resistance to grease and fuel stains, retaining their shine and they last forever; unlike enamels and lacquers . Still another is the alternator. No doubt using the original generator keeps the tractor pure, but for thos
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