I always use Lucas break in oil additive, start it up, make sure it runs right, tweak anything that needs to be tweaked. If all is good, oil pressure, etc, I run it at half throttle for 15 minutes or half an hour, then take it out and work it at capacity without lugging it for a couple hours. Then I run them for 4-6 more hours doing different types of jobs and loads. Works for me, did my first that way to see if it held up, and done them all that way since. My first was an Oliver 77. With 15 minutes on it, I hooked it to a 6' flail and mowed 4' tall Indian grass with it in first gear. My buddy has it now, his dad tractor pulls with it sometimes.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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