Well - disconnection the fuel lines (there are 2). Don't do it like that (I used an old antenna to make my own tool. It worked alright before on the S-Type fuel filter, but here I had a real fight on my hands. It is not worth the trouble: Order IN TIME, before you start, these special plastic clips cheap on the internet. They are cheap. But since I did not have them back then, I had to improvise...