ok there are 3 bits so thats 3 x 3 so thats 9 ways it can go together how meny trys do you think it will take to see if its working 
as there is not much to the old one and does not seam to be any moving bits on it (rubber flaps)i might just geet away with leaving that in thereThe problem with these thing is even if you know the model number of the machine or the carb you will often find they don't list a specific kit or it will be £20 but if you look at the image with the contents you find they are all there in a standard kit which is £6-8. Walbro are pretty well covered by a couple of kits. The Zama carbs do have the odd different one but 80% are covered by a couple of kits. You do have to have a good look because they will often had holes in different places.
You can then do what we all do, put the old ones in the just in case drawer safe in the knowledge they'll never be any use to you.
