These can both be found here, along all the others ever put out on these carbs:http://www.tempestplus.com/msacarburetorbulletins_.htm
Check the last page of the SB-2 for pictures of all different types of floats.
The SB applies to any Volare or it's predecessor's floats, to include Marvel-Schebler, Facet, and Precision Airmotive, it doesn't apply to carburetors containing floats manufactured by other FAA-PMA approved sources, if you can prove you have one of those. I doubt there's much difference between the brands myself. Here's a link to a letter Kelly put out on the subject:
http://www.kellyaerospace.com/service_p ... _float.pdf
So with the leak I have I decided to replace it. I pulled it yesterday and popped it open, the float I have is a plastic one, though the paperwork I have led me to believe I had a metal one.
The "weld" joints at the top of the float appear cracked. I sank it in water overnight and it didn't leak a bit. But still doesn't look good to me, I'm glad I'm replacing it.I ordered the float kit from A.E.R.O. in Granite City, IL 800-362-3044, around $130. A.E.R.O. is listed as one of Tempest's distributors. I also ordered a needle and seat kit, and they had the carb mounting gaskets as well.
Beware of float kits being sold by Spruce and everybody else. They're the old P/Ns which only bring you up to MSA-1 standards! I would also recommend if you're having your carb overhauled or exchanging it, to make sure it's going to have the new, blue floats in it.
Hopefully the combination of these will fix my problem.
Something else I learned, MSA-3 requires our carbs to be overhauled at engine overhaul or every 10 years whichever comes 1st.
I've got a couple years to go or I would've gone this route.
