The air and fuel filter replacement, which I did as part of my 40,000km service, took me 1.5 hours. I'd expected it to take a lot longer. The task is straight forward enough - just fiddley. When I received my fuel filter in the mail, it didn't have new crush washers so I had to wait for those to arrive, too. Make sure you order them at the same time.

	Start by removing the tank bolt. You'll need to lift the tank to access fule lines and electrical connections.
	Disconnect the fuel line at the petcock.
	It was dry and no fuel came out.
	Disconnect the two electrical leads to the petcock. They are colour coded - one is red (hidden beneath the tank) and the other is black, so reconnection is straighforward.
	Pull the tank back and disconnect the fuel line on the front of the filter. Reach under and pull off the thin fuel overflow line. Both of these took a bit of tugging and twisting, but went back on more easily.
	Remove the tank.
	Remove the air filter lid.
	Obviously the filter has being doing its job.
	You'll need two spanners to undo the fuel filter - a 19mm and a 22mm. I ended up loosening the filter clamp to allow the filter to rotate slightly for easier spanner access. I stuffed some rags under the filter to soak up any spilt petrol. Only a bit came out of this front one, but the rear one leaked a couple of tablespoons. I spent 5 minutes poking a screwdriver and rag around soaking up petrol.
	As I undid the final filter fitting I was still concerned whether the filter could actually be removed and replaced in such a small space. I had to slide the filter clamp off and the filter came out easily.
	New fuel filter in place. There's not much room in there for the fuel filter. With your fingers, rotate the filter onto the rear fitting, then tighten it up with your spanners before doing up the front banjo fitting. Don't forget the new crush washers and the filter clamp before you reattach the hoses.
	Air filter in place.
	To help ease the tank back on, I sprayed some lanolin grease onto the tank bumpers - which didn't work - so rubbed some lanolin grease onto them. Then I replaced the tank: replaced the overflow line first; then the front filter line the electrical connections for the petcock the petcock fuel line It helps to keep the rear of the tank lifted with a piece of wood at this stage.
	A colleague with an EV suggested I take off the fuel cap receptacle and check it for rust - which I found! A common problem apparently. I'm still not sure what to do about it.