Engine serial number is used for engine parts. Stamped in on a small machined flat just above the metal cover on right side of engine in the area below the # 2 or 3 spark plug. Think about all aftermarket piston and sleeve sets sold now fit all 300 and 350 engines. Two different connecting rods with a different piston pin hole size were used on a 300. If you engine serial number is before the change to small pin rods you will need to get the adapter piston pin bushings and install in your rods to use most pistons sold now. IH also sold replacement piston and sleeve sets with small pin size.
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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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