I think I've heard that many of the M block serial numbers are not matching with the tag, but they do on the H's. Go by the casting codes, Example, a date code on the block that would say something like 6-21-M would mean June 21, 1943, the letter at the end of the date code is the year, compare it with other casting codes stamped on the tractor. The X1 in the serial number means that it is a Gasoline burning engine, it does not burn distillate or kerosene fuel.
Date Codes:
1939 - I 1940 - J 1941 - K 1942 - L 1943 - M 1944 - N 1945 - O 1946 - P 1947 - Q 1948 - R 1949 - S 1950 - T 1951 - W 1952 - X
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Today's Featured Article - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I’m handing him tools and he says, "give me that..." and I’ve already got it in his hand or "hand me that....."and I’ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
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