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Guyfang and Dwnorton1, thanks a million for your trouble. That darn Zenith carb - it's taking over the world! I will follow the other leads in my relentless search for the OM25A....!
Pics of the Zenith and Tillotson carburetors
Dwnorton1, thanks for replying to the thread. Here are some pics of two of the carbs used on the 4A084 Standard Military Engine. The first is the Tillotson OM24A. It looks identical to the OM25A, which is used in the earlier model engines. The...
The Om24 and 25 apparently look the same, but I think that the venturi size must be larger for the 25, and perhaps the jetting as well. Can't confirm that; no one seems to have one. Tillotson was split up some years ago, one company has old inventory in the USA (but nothing as far back as the...
Guyfang, I don't have the OM25A carb, or any part of it. As far as numbers go, I have in my possession a Tillotson OM24A, and that designation is stamped onto the rim of the intake flange. The OM series of Tillotson carbs is rather old, and I believe, discontinued. There were quite a number...
Dwnorton1, if you can take a picture of your carb, I can probably tell if it is the one. Gaskets no problem. Also, the carb itself, if it is an OM25, should display the ID on the exterior. Sounds like it will take a long swim to find out!
Guyfang, thanks. Fact is, I'm looking for one of the stock carbs found on the genset: a Tillotson OM25A, to run in my 4A084-4 engine. This engine used the OM25A back in the 70's(?) and that is the carb I need. I do have the Zenith carb I pulled off the 084, but would rather not use it.
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