I'm prepared to admit that Kerry is correct regarding which tube exiting the gas tank petcock is "ON" and which is "RESERVE".

The Answer:
The tank petcock has 2 exit tubes. The longer one is marked R and IS reserve.  The shorter tube is marked O and is "ON".

How I tested:  I ran 2 hoses from the lines to 2 gas cans and turned on the tank petcock.  The results are the same as Kerrys. The long tube flowed gas longer than the short tube did.  Logic tells us that this is the "RES" hose.

Kerry, I have already made the donation to gstwins.com in your name.
:x
OS

Whew!  You had me worried there....

It's good to know that the same part number seems to mean the same part.

Order is restored to the universe!  

PS - It never occurred to me to say that if you had a large-enough gas can and an empty-enough fuel tank, you could have run both hoses into the same can.  :dunno:

Well, hopefully you knew that, and bought the second can for other reasons.  (Too small, or needed another one for something else.)

Oh, and I'm sorry that the original test which I devised caused you all this trouble.  Are you sure you don't want me to reimburse you the $3?

eh, he'll get a free sticker out of it.
glad ya did the test. cleared it all up for me as well

Quote from: KerryPS -Well, hopefully you knew that, and bought the second can for other reasons.  (Too small, or needed another one for something else.)

Oh, and I'm sorry that the original test which I devised caused you all this trouble.  Are you sure you don't want me to reimburse you the $3?

I found the 2nd can in my wife's car trunk and A wager is a wager.  It's for a good cause right?

It's just my pride that's hurt.  

I think it will get better tomorrow when I pick up the new Bonneville    .  No plans to sell the GS at this point.  I have a son 16.5 that may end up with it.  Depends on what mom says.

I was so surprised, that I retested the original way and of course it stopped flowing after 20 secs. or so.  I guess that was how long it took to drain the ON side of the petcock and hose.  It seemed much longer the first time.  The time -warp might have been from the 1/2 tab of "Blue Lighting" and those 5th's of wiskey I drank while the tank was emptying.  

I've now reversed the hoses as they attach to the tank and assume that I won't run completely out of gas this afternoon on my way home tonight.

I'm going back to nursing my wounds now. :dunno:

OS

I noticed that on my bike, the fuel petcock seems to have been re-installed backwards.  (The paint job wasn't stock when I bought it.)  This places the "screw" to turn the valve off/on right against the edge of the tank, which makes manipulation of the valve difficult.  It further complicates things because the stock fuel hoses have to be crossed to fit the correct positions (they weren't when I bought the bike, and yeah, I ran out of gas.)

I'm assuming that everyone elses has the screw facing the inside of the tank, where a mortal can actually reach it with a normal screwdriver.  And that the hoses fit the correct positions without crossover.....  

Man, I trusted the O/R indicators on the petcock when "fixing" the problem.  I'd be disturbed to think that Suzuki couldn't get that right.  Do I misunderstand the bet? :dunno:

Quote from: KerryOrder is restored to the universe!  

On the contrary! Murphy lost (though he had a little triumph when OS's fuel ran out), and the laws of enropy have benn violated!

I guess I should have said:

Order is restored to my (mental) universe!

You guys....

Quote from: wasabi_peasI noticed that on my bike, the fuel petcock seems to have been re-installed backwards.  (The paint job wasn't stock when I bought it.)  This places the "screw" to turn the valve off/on right against the edge of the tank, which makes manipulation of the valve difficult.  It further complicates things because the stock fuel hoses have to be crossed to fit the correct positions (they weren't when I bought the bike, and yeah, I ran out of gas.)

I'm assuming that everyone elses has the screw facing the inside of the tank, where a mortal can actually reach it with a normal screwdriver.  And that the hoses fit the correct positions without crossover.....  

Man, I trusted the O/R indicators on the petcock when "fixing" the problem.  I'd be disturbed to think that Suzuki couldn't get that right.  Do I misunderstand the bet? :dunno:

you misunderstand
R is in-fact the RES tube. zookie got it right.