L Mack: Farmall 100 serial numbers are on left side of clutch housing. The engine serial number is directly below No.1 spark plug however that will not help. Farmalls 100 and 200 each have their own sequence of serial numbers starting at 501. The engine however share a common swquence of serial numbers.
Farmall 100-501 had engine number 572, 200-501 had engine number 663, I-100-501 had engine 976. By the end of production in 1956 Farmall 100-18940 had engine 35930, 200-15698 had engine 34131. The last I-100 was 635, no listing of engine, but as you can see, only 135 built.
Interesting at this point 130 and 230 each start over at 501 and engine numbers continue where 100 and 200 left off. Same occurs when you go to 140 and 240, engine numbers continue where 130 and 230 ended.
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Today's Featured Article - Pitfalls of Tractor Engine Rebuilds - by Chris Pratt. The first pop after you have put the machine together with your own hands is exciting and pleasing. The whole experience can be marred if one moves too fast and makes too many assumptions that they can just use "as is" some parts they should be closely scrutinizing and possibly attended to. In such cases, rework makes what could have been a fun project turn into an irritant or even a nightmare. Minor Irritants To give you an example of an minor but irritating proble
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