Jonathan, on the 123, the S/N should be at the back of the tractor just above and to the left of the draw bar. There should be a series of numbers then a U then more numbers. The actual S/N is the set of numbers after the U. Keep in mind that the Cub Cadet website may or may not have the older Cub manuals available online, I've not checked. Please let us know if they have it.
William B., nice 149! Interesting rear lift setup. Hmmm, that's an odd place to mount a rear work light.
Scott S., if you can get some photos of that Cub we should be able to help you ID it. I'll be on the lookout for it in the CCC/MTD forum section.
William B., nice 149! Interesting rear lift setup. Hmmm, that's an odd place to mount a rear work light.
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Scott S., if you can get some photos of that Cub we should be able to help you ID it. I'll be on the lookout for it in the CCC/MTD forum section.