just cant figure out which hoses go to what. btw my bike has spark and does start now.

Here is the fuel hose routing diagram from the wiki page.
Edit:  I read through the original post too fast and missed the year... So I posted the old routing diagram by mistake...

Also, courtesy of adidasguy, here is a link to the hose routings on a set of removed carbs.
http://s1206.photobucket.com/albums/bb442/adidasguy/Technical/#!cpZZ2QQtppZZ20

- Bboy

Top picture:
RED= fuel from petcock to carbs
Yellow= just a vent. It is OK

Bottom picture:
RED= Main fuel line from tank (rear, short one on the tank fuel thingy)
Yellow= Reserve from tank (front and longer tube on the tank fuel thingy)

(That WIKI diagram is for older 1989-2000 bikes with a different fuel petcock)

okay I know theres something wrong.
you were right about the vent.
and that diagram is wrong.
but where in picture one does red hook to.. the bottom t-line hooks to the only two slots on the petcock.

In the bottom picture, you have red and yellow with nothing on them. They go to the fuel tank petcock/fuel-valve.
Notice a large hose just to the left of the red circle, going off to the left? That one goes to the carbs - the hose in the red circle in the top photo.

The way it is now, where does that hose go? (red circle, top photo)
Where does that lower left hose of the petcock go?

What is coming off of the 2 nipples on the tank fuel valve/petcock? Where do they go? Obviously not to the frame petcock as they have nothing connected to them.

in red top picture there are two connectors, the bottom one being whats connected the the fuel outlet of the petcock.

Quote from: BockinBboy on September 21, 2012, 12:03:44 PM
Here is the fuel hose routing diagram from the wiki page.

That diagram is for the OLDER petcock. he has a NEWER one.

As I found out recently, there are two good things about the newer bikes as far as routing goes.


1. The things are labeled, by a raised metal letter on each pipe connector.

A little "R" for reserve line, and "O" for normal/"on" line, on the petcock.
Likewise for the tank.

2. Inner stays inner, outer, stays outer.

So, for tank<-> petcock lines.



TANK        Petcock

   R  O       O     R
   |   |        |      |
   |   --------       |
   ____________


That means on your pic, petcock-yellow-circle == reserve
petcock-red-circle == main/on



For your carb pic, the yellow circled thing is fine.
The red circled thing.... erm..

I think that goes to the bottom thingie on the carb, which you already have hooked up fine.

The fourth line, unshown in either pic, is the vacuum line. Which on the newer petcocks, is kinda behind-and-up.
On the carb, it goes.. Umm... somewhere else But it's the only non-"braided" line that goes between the petcock and the carb.

aha. linked from a different thread a while back....



updating wiki too...

then I still dont know where the red in the top picture goes...

Ah, I see!  The top hose you circled in red is a vent.  Might connect to a carbon canister, or just hangs in the breeze. (Actually routed to the right, just under your right footpeg.)

In the diagram, see the "to carbs"? That's it.

#1 goes to the carbs
#2 goes tothe tank - the front or longer of the tubes on it. This is the reserve fuel line. PRIME also takes in fuel through this, the reserve line.
#3 goes to the tank - the shorter of the 2 tubes. This is the main fuel line.



Agree - looking at the position of the one in red it is a vent - hard to tell due to the angle. usually goes over the airbox and ends back of the air box. There would be a metal bendy clampy thingy on one of the air filter bolts on the air box to hold it in place.

The vent is the hose going off to the lower right.
The gray hose going off to the lower left connects to the vacuum line of the petcock.
The fuel goes into the carbs in the brown T in the lower center and does not have a hose connected to it in the picture. It connects to #1 in the upper picture.


I do see a hose clamp on that brown T in your photo. Can't see the actual hose in that shot but you do have a hose on #1 of your petcock so I assume that is correctly connected.

What you do not have connected is the fuel tank to the petcock (#2 and #3)

i got it running. I left the reserve from the tank empty. because I didnt have a line to fit. i have a 3/8 i think on the O line. and I left the other fuel inlet for the carbs off. it sounds good, but its running on mixed gas. so I have to get the right gas. and adjust the clutch because its not hitting that right spot. you really have to pull it in to get in nuetral. but it runs great and is fast. i think its  flooding a little bit. I already taken it down the street and back up like five times. thanks for all your help guys.

Quote from: Ryanstalin on September 21, 2012, 05:26:02 PM
i got it running. I left the reserve from the tank empty. because I didnt have a line to fit.

odd choice. If i was going to connect "one line", I'd connect the reserve line up.
Even if it needed to go to  the "main" tap on the spigot.

well its not running right. I got regular gas in ut, but when you give it throttle it dies, it could be getting to much gas. be flooded out. plus it doesnt idle without dying, i have to hold the throttle by a hair, im sure the idle screw will fix that. does anyone have the part numbers for the fuel lines that I need, so I can get it hooked up properly?

Pull your plugs and 'read' them.  It will give you a starting point and a direction to go next once your lines are sorted out.

- Bboy

well. my bike is pouring gas out from under the carbs.

Quote from: Ryanstalin on September 24, 2012, 10:03:15 AM
well. my bike is pouring gas out from under the carbs.

Sooo... either you left a flood bowl drain screw too lose, or you just blew a gasket?

Presuming it isnt running down the side of a tube. If it is, then possible that tube is loose?

Pouring uner the carbs:
1. Drain screws in snug?
2. Loose connection where fuel line meets the carbs?
3. Gas running down the fuel lime from loose connection at the fuel petcock?

from the first post, the red in the top picture is still not hooked up, cause it has no where to go, the line that goes from the petcock to the carbs, theres only one. but I have two connections at the carbs for the fuel inputs. fuel is coming out of it and leaking down on the carbs. I lost the hose to that one apparently, oh and when i give it throttle it dies. Im trying to think of anything else.... dot dot dot. I checked the oil again, its a little over full, normal color. just to be sure before ruining the motor since its been up so long nonrunning. I checked the spark plugs again, they are dry, like a lean fuel mixture, so im assuming its not getting enough fuel because its getting wasted on the carbs. oh, and my airbox had a lake of gas in it. dont be surprised because theres still no air filter in there. so I dont know if thats normal.
as of right now, im searching for my missing hose, and then figure out where it connects.

The one hose of whuch you speak is a vent and goes nowhere other than hang back behind the air box.

There is only 1 fuel connection to the carbs. As shown before, it comes from the frame mounted fuel petcock.
If you think there are 2 fuel connections to the carbs, you really have things wrong.

You need new pictures showing what you have connected and where you think fuel goes to the carbs.

The  YELLOW oval is the brown T where there is the single fuel connection from the frame petcock.
The GREEN circle is a vent hose - connects to nothing