I think it's a Tecumseh Type 6 carb, whatever they put on a OVRM120-22043E. It's an emission carn, so no adjustments. I had the emulsion tube o-rings turn to black garp, and the fuel was truly nasty. I dumped the tank, put in a half tank of fresh, with a fat dose of seafoam. Then I took the cobarburetor down, and ripped out all the welch plugs, idle restrictor screw, emulsion tube... I ran bread tie wire thru all the holes I could find, replaced the o-rings and welch plugs, but apparently, I'm missing something, because it only runs five seconds after I prime it. Easy to start, just won't run. The main jet nut has three holes in it, as far as I can tell - two at the bottom near the hex head, one really small on on top at the end of the threads. What am I missin' here?