got the carb kit.... wow not much any more, for $26.... got from local small engine shop. Found breakdown of parts on Pat's small engine, their lookup took me right to the right engine and not a Vanguard.... . bought a float off of feebay, (that was cheap, $5 shipped for brand new OEM Briggs float..... they had some partial kits listed, when I looked them up the 1st time (admittedly so by sellers) wasn't sure what might be missing from any of them/ so I went to the local guy.... punched in the PN of the kit I needed and got a lot of cross references to at least 3 other OE Briggs kits....if they are all the same, I don't get why the number changed so often...…
Anyways I dunked the carb in my ultrasonic dunk tank, I have never had a carb that I had to change solution on 3 times (water plus simple green) before it was as clean as it was gonna get..... it was super clean on the inside from what I could see after the 2nd 30 min cycle (longest I can run it for at a time) but the outside was still coated with what looked like a sticky mix of sawdust and varnish that used to be gas, after about 8-10 runs thru the 30 minute cycle, I took an old toothbrush and the skin of varnish finally came right off, tried this about every other cleaning cycle... still some original paint in the nooks and crannies that is stubborn as He11.... it can stay.
the kit I got didn't come with a new hi speed needle (the long tube that screws in before the nut that holds the hi speed mixture screw) and I couldn't find the original for a couple days. Looked up feebay again, found more kits than the 1st time I looked, about 1/2 showed that tube in the pic, others (of teh same PN) didn't....
I remembered that I had a partial kit left over in my toolbox at work, had a trash pump with an aluminum 8hp Briggs that I had to go thru the carb on about 6 months ago there, found a hi speed tube in those remnants.... whew/ then, like an hour later my wife called me at work and said she found the original one.... in the kitchen sink, I have no idea how it got there.... I had dumped the sonic cleaner in the flower box outside, all 3 times I had to.... thought it was among the mud out there. So now it's together, all preset, just gotta get me a piece of 1/4" fuel line, bolt it on, and I can fire it up, and see if it still leaks out the mouth of the carb...
I think that was just the viton (or what ever they used in 1972) on the carb needle, being hardened and not pliable enuf to seal any more, the old float looked brand new, hardly even tarnished brass.... and definitely wasn't gas logged.... then put the belts back on and see if it produces air, hopefully the tank is good…. the unloader on the compressor looks "modified", I don't yet know why it would be that way. .... it has a Quincy model 216 compressor pump on it.... don't remember seeing too many "junk" Quincy's over the years.....