A very informative manual! Thumb up! By the way, every time X-typers remove the airbox (which happens very often) they have to unfasten the airbox cover secured with 7 long screws. It takes a lot of time if one uses an ordinary screwdriver and causes stripped threads if one uses a drill.
Do you know the part number for that bolt you pulled out at 4:31? The idler pulley bolt? I need to replace just the bolt for a Jaguar S-Type 4.2 V8, but can't find the part number for it. UPDATE: I found it. The bolt number is AJ81256.
There is a very special place in hell for those Jag design engineers, who made simple jobs almost impossibe and very expensive if not DIY. Try replacing the leaking transmission cooler rubber pipes. You can get the top crimp off with a stanley knife, but getting to the others, no. So you cut them with a hacksaw or dremmel. Ensure you use a cotton bud to clear out the swarf. Use Ear clamps or good quality screw clamps. But it works and once you are all ready to go takes less than an hour.