Help with Vacuum line connection-04 GS500F

[jar]

A friend had his GS500 F parked for 2 yrs, helped him pull the carbs to clean them out but forgot to take pictures on how the vacuum line are connected....looking for some help with the following...tks

vacuum line connections ( or how to eliminate)
Where to connect the petcock vacuum connection

 

[Brian P]

Without even seeing the bike ...

There are only two hoses on the fuel tap ... one is the fuel line, the other is the vacuum port. They're different sizes. You can't mix them up.

There is a vacuum port on one, or both, carburetors. It will be on top adjacent to the cylinder head. If only one carburetor has this connection, that's where the hose from the fuel tap goes. If both have it and one of them has a rubber cap over it, the hose goes to the other one. It makes no difference whether it's the left or the right cylinder, it will work the same, so connect to whichever one that the hose reaches. If you need to make up a new hose ... it makes no difference which cylinder you connect it to. Just make sure the other vacuum port is capped.

There is a remote possibility that both carburetors have a hose connected to that fitting, which leads to a T-fitting, which in turn leads to the fuel tap.

 

[GreyGhost]

There is a remote possibility that both carburetors have a hose connected to that fitting, which leads to a T-fitting, which in turn leads to the fuel tap.

Why would they do this? Just because the caps fail so often?

 

[TwistedKestrel]

Technically in this case there will be four hoses, as the GS500F has a remote style petcock, and a second hidden petcock/tap directly on the fuel tank so you can still pull the fuel tank without draining it empty every single time. I'm trying to find a good diagram that shows what goes where

 

[TwistedKestrel]

Here, hopefully this helps: Fuel Hose Routing