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 - Pitfalls of Tractor Engine Rebuilds - by Chris Pratt. The first pop after you have put the machine together with your own hands is exciting and pleasing. The whole experience can be marred if one moves too fast and makes too many assumptions that they can just use "as is" some parts they should be closely scrutinizing and possibly attended to. In such cases, rework makes what could have been a fun project turn into an irritant or even a nightmare. Minor Irritants To give you an example of an minor but irritating proble
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