If you have a little manual dexterity, as said plug the front one with a vacuum cap same as you see on 1 2 3 manifolds. The vacuum line at 4 you can get at from the right hand side, if you take off the bottom of the air box. Its got 2 Allen bolts inside down on to the top of the engine. Copious WD40 helps. I didn't take tank off to do mine.

BUT if you have found that you should also replace the fuel lines from the tank to the injector rail, tank to fuel pressure regulator to the injector rail. These go hard and crack and split.....especially if you have tank on and off. Make the two front ones about 1 1/" longer and refilling the cooling system or accessing relay box no longer involves removal of the tank. Also, you likely have the bolt down tank with the electrical connector at the front left, close up the pins a little to improve the electrical connection.

Thanks for the posting directions and info.

This one I replaced from the right hand side, tank off doesn't let you access this. Had to take bottom of airbox off [2 bolts as mentioned and copper paste them for going back in]. I fed a long length of vacuum tube in from the left side where you can see the tube go through, then on the airbox side was able to grab it and slip it on to the fuel pressure regulator. [Getting the old one off was a bit harder though, needed a knife to cut it]. Then back to left side of bike, cut the tube and slipped it on. If you use a precut length you have nothing to grab hold of and work with......

I just head down to the local BMW dealer for most of these things and ride into the Honda main dealer next door, they stock the right tube at the right price.

I ended up taking out the top and bottom of the air box because once the bottom is removed it is easy to take the top out and then you have lots of room.  I replaced all the vacuum and fuel hoses, adding a little length like suggested.  Now that I'm in there I'm also going to replace the fan with the SPAL, as it is getting noisy and add a manual switch.  

flyinglow wrote:I replaced all the vacuum and fuel hoses, adding a little length like suggested.  

Clamps used on fuel injection high-pressure hoses provide uniform clamping pressure. Unlike the ones you are using, they do not have perforations. Here are images of this type of clamp in two styles.