Keep every valve and pushrod in order from front to back. The valves can be cleaned with a rotary wire brush (Bench wheel). They cannot be damaged this way, so clean them well. Wear a respirator or mask to avoid the (possibly lead containing deposits). Use a wire brush on a drill to clean the combustion chambers as well. De grease and get it ready to take to a machine shop for a valve grind. The guides and stems of the valves should have .001" clearance (max) measured with a micrometer, and ball micrometer. The sleeves can be bumped out from below with a wooden hardwood block and a hammer from below. Be sure to keep the rod big end from damaging the crank journal. You will need the rods, so getting the pistons out will be necessary. JimN
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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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