They make a special tool. I had a engine rebuilding shop for 40 yrs. Many times we used a new or good square chisel. Stick it in the seat at about a 45 deg angle & slightly tap the side, corner of that chisel under the btm. inside edge of that seat. Take a shop rag & throw over the chisel and your hand now pop the end of chisel straight down toward the head it should pop the seat out. If you make a nick in the port ,smooth with a die grinder. The dia. of the chisel has to relate to the seat dia. If you don't like the nick in the port and you have a seat cutter you can go a size smaller & cut the seat out.
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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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