Those instructions were part of Zama's official guide. Where can I then get a mylar diaphragm then, it seems that repairs kits only contain the black ones?. I certainly do not know much about these carbs, which must be obvious from my posts. Appreciate your help Grumpy, but getting to the point of throwing out this Mac 2816 and continue using my 40 year old Hanimex whipper, at least that still runs well. Regards.