[Arizoni]

Although my 2011 G5 only has about 7200 miles on it I decided to get a head start on the service requirements.

I notice in the Owners Manual they say in addition to the usual stuff like oil and filter change, inspect HT lead, Lubricate brake pedal pivot etc, I need to replace the high pressure fuel hose, the rubber air filter to throttle body hose, the rubber inlet manifold hose, the air filter and the fork oil.

I don't have a problem seeing the need for the fork oil, air filter and high pressure fuel hose but if the other parts are in good condition I don't see the need to replace them.

Any thoughts on this?

[trimleyman]

Honestly , I think much in the manual is overkill. I have examined my fuel line at 1000 mile intervals since 5k and see no sign of any need for replacement, same with the inlet hose. If you were running fuel with high alcohol contents then as per My E85 post I could see an issue here , but otherwise I would suspect a much longer life than suggested.

[gremlin]

our UV levels here in the northern plains are such that it'll be a cold day in Fargo before I ever need to worry about degradation of the the air snout.

(So....  a cold day in Fargo is redundant ......   a better example might be a snowballs chance in a microwave).

[Tri750]

Re: the rubber bits, some good poking, flexing, will be a safe inspection and leave it at that.Lube adjust control cables,  Check fuel line tightness and look for cracks, fork oil change will make you smile with the improvement you'll feel.

[Ducati Scotty]

If you do want to replace the fuel line I believe you want 5/16" and get the high pressure EFI type.  Takes 10 minutes to do.

And get some good clamps while you're at it. 
http://www.google.com/imgres?um=1&hl=en&sa=N&rls=com.microsoft:en-us&rlz=1I7AURU_enUS501&biw=1600&bih=759&tbm=isch&tbnid=QE-DhfOirlCfOM:&imgrefurl=http://www.commonwealthinc.ca/commonwealth_special.html&docid=xPoP4VOWDqyXIM&imgurl=http://commonwealthinc.ca.c9.previewyoursite.com/ESW/Images/2123_fuel_line_clamps.jpg&w=420&h=330&ei=3pKBUOe_NNDO0QHzmYDACA&zoom=1&iact=hc&vpx=181&vpy=252&dur=3632&hovh=199&hovw=253&tx=121&ty=122&sig=101318094247122694113&page=1&tbnh=140&tbnw=178&start=0&ndsp=21&ved=1t:429,r:0,s:0,i:80
These are nicer since than the kinds where the threads bite into the hose.  Any auto parts store should have them for a few dollars.

Scott

[barenekd]

Jack and I have 13 or 14000 miles on ours and have seen no problem with these parts. I did cut off an inch on my fuel line because it was riding up on the battery cover on a bit of a sharp edge. I think there is more of a time limit (a few years) than a usage thing, except maybe the fuel line, but as you say the fuel line and clamps are available at auto parts stores for reasonable prices.
Bare

[Arizoni]

My only concern with replacing the fuel hose is I sure would hate to see that dam plastic outlet on the fuel pump crumble while I was frinkling around trying to get the hose off or on.

If the outlet was brass like it should be, it would be a no brainer.

[barenekd]

I've had my fuel line off the fuel pump several times. I broke mine finally by putting a long extension on a socket to tighten the tank bolt and pushing down a bit too hard into the fuel tube. That was expensive. I don't stick long extensions any where near that spot. But normal handling shouldn't break them. On the other hand, it is a crappy design, and one that a lot of motorcycle manufacturers are using. That banjo fitting should be replaceable. But it snot.
Triumphs are rather noted for busting the things and they do it on their own! I had to replace several of them.
bare

[Ducati Scotty]

+1, pulling the hose off and putting it on is faily easy.  Remove the battery and you've got plenty of room.  Getting it on the injector is tougher.  I think I unmounted it to do that but you can do it with it in place.

Scott