I had an old Vespa seat lying around for a long time, and decided that I should put it to some use. The problem was that the seat cover was trashed. However, the rest of the seat was fine. A new seat now costs around $140 USD, so time to fix this one! This is an easy project that you can finish in an hour or two. All you need is an old seat, and a new seat cover. The covers are not too expensive, and should only cost around $60 USD.
So the first step is cleaning all the old seat bits from the existing seat. First, remove the seat lock by taking off the three small screws that hold it onto the seat frame. Then remove the rear "Piaggio" badge from the seat by pulling off the two retaining screws. Then pull the seat cover clips from the bottom of the seat frame, and take off the tatty old seat cover. That leaves you with the metal frame, as shown above.
Next, take a look at the foam seat cushion. Mine is still in good shape, so I will re-use it. if yours is bad, you'll have to source a some new foam rubber. It will need to be very dense foam rubber, and may take a bit of hunting to find.
With the cushion in place, it is time to loosly fit the seat cover over the frame. The P-series seat is very easy to work with, and the cover should fit over it with little effort.
With the cover over the frame, flip the seat over. Now, you'll want to stretch the seat cover as tight as you can on both sides. Make sure that the holes line up at the back of the seat for the lock and the "Piaggio" badge. Take a look at the front of the seat and make sure that it is lined up straight there. With everything lined up, put the seat lock in place to hold everything down in the back. Then pull the seat cover tight again. I used a hair drier to heat the cover up, and make it more pliable, but that isn't strictly necessary.
Once you have the seat cover where you want it, pull the cover and loop it over the seat frame. Use the seat clips to hold the cover in place. Slowly work around the seat, until all the clips are secure.
Finally, put on the "Piaggio" badge. Mine was pretty rough, so I got a new one, but forgot to get the sticker. I'll do that later. Once you are done, take a look at the seat, and make sure it is all liked up the way you want it. I re-adjusted my cover after I took this photo, to make it a bit more even. Once that is all done, you're set to go. This is a very easy do-it-yourself job that just about anyone can accomplish, and requires almost no tools. Fun!