I can't find much on the VAS 201 H model MM as my model number list only goes to 1991 and it's not listed in that but found a listing that mentioned the Vas model from 1999 to 2005.
I saw a while ago someone fixed a broken primer by picking out the old rubber primer and then they used a whipper snipper clear primer but from memory they had to jam a big O ring in to hold the primer bubble in tight. Otherwise most people just buy a new primer cap.
I don't think the fuel tank / top cowl is correct as it looks from an earlier model ,the parts list for 1999 on shows a later top cover.