if it's a walbro carb, go to a local mower or saw shop and ask for a D20WAT, depending on their markup it can range anywhere from $5 to $15, this is the seal kit for the carb, has diaphrams and gaskets for several different versions of the walbro WA and WT carbs, the kit with the meetering lever and needle is K20WAT, generally costs a couple dollars more than the D kit, but also has the diaphrams and gaskets. I ordered like 5 of both online a while ago to have on hand I think I got them for $3 and $5, I can look where I got them from if you want to know, I just did a google search for the part number and found a good place.</p>

I don't know the part number for Zama carbs, I really need to get a few rebuild kits for those on hand...</p>