No, the 1010 didn't have valve-seat inserts. Valve seats were ground into the head casting. The 1010 DOES have exhaust valve rotators.
The new engine that followed in the 350 also did not have any seat-inserts. That was the Dubuque/Manheim 300 series engine. 3 banger in the 350 and 1020, 4 banger in the 2510, 2020, 450, etc. 6 banger in a 540 skidder, 4030 tractor, etc. I don't recall seeing factory seat inserts in any of them until turbos came out - or French built (Saran) engines were used.
As I recall, it was the Deere Waterloo engines that first appeared with seat-inserts but maybe somebody will correct me.
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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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