Reserve Switch.

[baldy3853]

Last year when I was at the WCR and Colorado rally I was consistently getting 180 miles before going to reserve and our speeds were in the 70s & 80s and some a little higher 

[movenon]

I start looking after about 240k's  

on weekends away I take a 4lt can in one pannier, but only other people have ever used it  

Yes, I chicken out around 250 K's but I'm costantly amazed at how much fuel I still have left.
My fuel electrics are also stuffed. I have tried to find written info about the fuel level gauge and adjustments but have had no luck.
Good Luck with your quest.

This post might help you. Go to page 3 for pictures of the sender unit.  http://www.fjowners.com/index.php?topic=6924.30 . It will not get you any better mileage but it is nice information   In diesels roughly you get the best mileage at your peak torque rpm (on the engine test stand). On the FJ without looking at the spec's that would be around 6000 rpm? Of course lots of other factor's play into it, wind resistance (drag) being a big one. All I am suggesting is that low rpm may not get the best fuel economy. Something to think about. No matter what I usually got to get off a bike around 150 - 200 miles of travel anyhow.
George

[FJ12PD]

I know from experience[out of gas apparently in the middle of nowhere ] on my Vmax that the electric reserve switches are touchy.
After thinking I had run out[ low fuel light came on, switched to reserve] as I rode my bike home from buying it, I shut it off, moved the switch back to on, then retried it heard the pump run a little then stop, retried to start started right up and ran for about a mile. I repeated this about  6 times and made it to a gas station to fill up .
. I looked up on the Vmax forums and was led to check the reserve switch. I pulled it apart and it was very corroded inside on the contacts . I cleaned them and covered with dielectric grease and retested now the reserve worked .
I know it is not a FJ but the system works the same, so take apart the switch and clean it first. THen  carry a small tank of fuel and test it.

[Jeff0308]

Hi Sean. The other (RESERVE FUEL SWITCH) topic was mine. I know my FUEL LIGHT doesn't work. Took my mower fuel tin for a ride with me till it ran out. Funny part is it ran out 100 metres from home  still haven't worked out if the fuel switch works properly but  Im not bothered. Just going to run off the odometer. Am going to get a new sender one day. Not fussed for the moment. You can still buy them new. If you decide to take your tank apart, consider treating it with TANK KREME. Best prevention of rust holes around. Beats buying a new tank.  Jeff

[Woodsman]

Had the whole tank apart over winter. Chain inside and rattled it around till arms ached, friend soldered a pin hole at the time. Opted not to go down the liner route just yet. Sender works perfect, had no issue bolting it back in even though the gasket is prob the original. Still have not got round to running it down to see if reserve switch is working.
Going to stick in the new xjr starter from rpm over the weekend. Using the bike as my daily workhorse in and out to work.
Sean.