I have attached a link to a picture of a hose on my bike. Does anyone know what this hose is suppose to connect to?  I recently purchased a '95 gs500e and am trying to get it back to spec.  Any idea where the other end of this hose is suppose to go?

http://www.nathanielmills.com/gs500_hose.jpg

Quote from: officespace2 on June 25, 2006, 09:23:37 PM
I have attached a link to a picture of a hose on my bike. Does anyone know what this hose is suppose to connect to?  I recently purchased a '95 gs500e and am trying to get it back to spec.  Any idea where the other end of this hose is suppose to go?

http://www.nathanielmills.com/gs500_hose.jpg

It's either a tank vent hose or a carb drain hose. Check to see that there is a hose connected to a molded outlet on the tank in front of the petcock or a hose connected to... crap, I don't remember where that one is supposed to be connected...

I had the same question, my guess is an overflow hose or something

It's the Airbox Drain Hose:

Is there anything you dont know?

Hmmmm ... I don't know! 

Quote from: Kerry on June 25, 2006, 09:58:33 PM
It's the Airbox Drain Hose:

Gaah, close. I removed my airbox so I kinda forgot about that hose 

I noticed that hose was off, and never paid much attentiont to it. When I went to rejet, though, there was a bunch of grime around that area, so I cleaned it up and it's connected now. I'm concerned, though.. What exactly is that draining? There shouldn't be a bunch of junk in my airbox, right? Another GS owners bike runs but won't idle right, and he's got a lot of stuff running out of that hose (we were both wondering what it was just today). Is this a sign of a problem, or is a bit of drainage normative for the GS?

Kerry...... that was so hot. Do it again. LOL. 

I love you guys, I mean really, I could just take a picture of any old washer or bolt on my bike and post it being like, "WTF is this?" and you guys will point out a diagram and explain what it does and why! (And how bad it is that I didn't put it back in the bike!)

That's so great! 

Quote from: Queso on June 25, 2006, 10:32:33 PM
What exactly is that draining? There shouldn't be a bunch of junk in my airbox, right?

Some drainage is normal, but too much (or of the "wrong kind") could indicate a problem.

The drain hose is the only outlet for "stuff" (not counting air ) that can enter the airbox from 3 sources:

1) "Blow-by" from the crankcase vent.  (See the incidentally-included hose in the diagram that connects to the top front of the airbox ... just to the left of the

Fuel Overflow label.)  The normal product here is a small amount of oil.

2) Fuel from the carburetor mounting boots.  Fuel in liquid form is unusual, and is the result of an overflow caused by a stuck float.  Fuel in vapor form can pass through the air box in the form of flame when a backfire occurs.  (Check your valve clearances!)

3) Water can enter the airbox through the air filter from:

* pointing the water hose upwards as you wash around the engine and seat
* weird air currents as you ride through the rain?
* other "creative" events?

If you over-charge a reusable fair filter (K&N, UNI, etc) excess filter oil could end up at the bottom of the airbox as well.[/list][/list]
The diagram clearly shows that the airbox was designed to handle these situations.  The floor of the box slants down toward the front, ending in a good-sized "reservoir" which is drained by the hose in question.

Speaking of the drain hose ... if you examine the lower end of it you will find a "slit" in what otherwise appears to be a closed cap.  I can only guess why the cap exists (To prevent unfiltered air from entering the airbox, even in small amounts?  To prevent critters from crawling up the hose?) but the slit allows fluids to escape when a certain amount builds up.

Hope that helps!

Wow.... I am astonished.  I just recently purchased my GS500 and I am still very ignorant about its components. You guys (and gals?) are absolutely amazing.  It only took 2 hours to have the question answered with a complete diagram and 9 posts.  Congrats... I now know where my "lifeline" will go if I ever play "Who Wants To Be  A Millionaire".  Thanks a bunch.  -Nathaniel

Quote from: Kerry on June 25, 2006, 11:23:03 PM

Quote from: Queso on June 25, 2006, 10:32:33 PM
What exactly is that draining? There shouldn't be a bunch of junk in my airbox, right?

Some drainage is normal, but too much (or of the "wrong kind") could indicate a problem.

The drain hose is the only outlet for "stuff" (not counting air ) that can enter the airbox from 3 sources:

1) "Blow-by" from the crankcase vent.  (See the incidentally-included hose in the diagram that connects to the top front of the airbox ... just to the left of the

Fuel Overflow label.)  The normal product here is a small amount of oil.

2) Fuel from the carburetor mounting boots.  Fuel in liquid form is unusual, and is the result of an overflow caused by a stuck float.  Fuel in vapor form can pass through the air box in the form of flame when a backfire occurs.  (Check your valve clearances!)

3) Water can enter the airbox through the air filter from:

* pointing the water hose upwards as you wash around the engine and seat
* weird air currents as you ride through the rain?
* other "creative" events?

If you over-charge a reusable fair filter (K&N, UNI, etc) excess filter oil could end up at the bottom of the airbox as well.[/list][/list]
The diagram clearly shows that the airbox was designed to handle these situations.  The floor of the box slants down toward the front, ending in a good-sized "reservoir" which is drained by the hose in question.

Speaking of the drain hose ... if you examine the lower end of it you will find a "slit" in what otherwise appears to be a closed cap.  I can only guess why the cap exists (To prevent unfiltered air from entering the airbox, even in small amounts?  To prevent critters from crawling up the hose?) but the slit allows fluids to escape when a certain amount builds up.

Hope that helps!

Kerry you should write book about the gs called

"My GS & Me:  Philisophical meaderings of the purpose, function, and joy of the Suzuki GS500."

Actually, the slit in the cap on the air box vent hose pictured is for draining the oily water from it.  It's covered so it doesn't drip just anytime.  My four previous Hondas had a plug in the hose from the air box and the plug had to be pulled out to drain it.  It's a good idea to give that slit cap a squeeze when changing oil to drain any fluid collected there into the oil pan.

There are normally 3 hoses there at that location, the other two smaller ones are the gas tank vent and the battery vent hoses.

Quote from: runsilent on June 26, 2006, 08:28:27 AMIt's covered so it doesn't drip just anytime.  [...]  It's a good idea to give that slit cap a squeeze when changing oil to drain any fluid collected there into the oil pan.

I'll buy that!

Quote from: Kerry on June 26, 2006, 08:47:57 AM

Quote from: runsilent on June 26, 2006, 08:28:27 AMIt's covered so it doesn't drip just anytime.  [...]  It's a good idea to give that slit cap a squeeze when changing oil to drain any fluid collected there into the oil pan.

I'll buy that!

Sooooo, this would be kinda like milking a cow??  Kerry knows about cows. 

Well, you can think of the cap with the slit as sort of a primitive check valve.