I'll add to what George said: If the choke lever is on the outside, it is for an M. If the choke lever is on the engine side, it is for a Super M, or perhaps a Super H, a 400 or a 450. The super M/super H carb will have the idle adjust screw in the same location as an M carb (going in at an angle on the body above the bowl). A 400/450 carb will have the idle adjustment screw located high on the carb body - like way up on the manifold mounting flange. Super M carb number on the brass tag is 356948R92; distillate/kero super M starts with 357xxx; super H starts with 358xxx; and 400/450 starts with something like 362173R91 and R92. A regular M gas carb number is 50983DC. A regular M distillate/kero carb starts with 47xxx. If you have a Super M carb and don't want it, I want one for my super M. (I have a regular M gas carb.) Hope this helps. mike durhan
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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