GS1000 tanks hoses "where do they go"

[Guest]

So I have the manual for my 1978 GS1000 but it doesn't have any good pictures. So here's a picture of my tank:


So blue hose is gas hose and goes to the center of the carbs I think?
The other hose I believe is for vacuum? Where does that go?

Also there looks like there's hose that comes off the gas gauge in the middle. Where does that go?

Do these connection where my finger is need to be connected/closed off or just left as is?

[joe79]

Vacuum hose goes to No3 carb (left to right facing forward). The take off's on No2 & No4 are for breather hoses that wrap over the top of the airbox.

See below for the same arrangement on my 750

[chuck hahn]

As Joes pics show. In your pics, the black is the fuel line that goes to the TEE between 2 and 3. The blue is the vacuum that goes to the brass nipple on 3. The other 2 are vents that get routed over the air box and down between the swing arm and frame area. Run the vent lines and then cut them about 1 inch LOWER than the bottom of the oil pan.

[hampshirehog]

The outlet from the fuel gauge sender goes in to a long hose that drops down somewhere by the front of the swinging arm. It's there in case the sender leaks - you don't want petrol spewing over the top of a hit engine.

[Redman]

............ my 1978 GS1000


.....

Hey Folks:

Why do 2 adjacent carbs have this port....?
(I, myself, don't have any experience with any pre 80, nor any VM carb.....)

.

[Big T]

Redman

They look similar, but they are not. The #2 vents from the carb, the #3 has a port in the intake that creates vacuum. You can always tell a #3 carb by looking at the engine side