TOPIC:

Hi i, ve bought a z650 f2 recently and i wonder where the two hoses on carb 2 and 4 should go, also there,s another output on carb 2 is this for the vacuum petcock?

andries, I have no idea what bike you own even though you told us... not all that familiar with the zillion 650 variations. Put your bike year/model and your location in your signature by editing your profile. It is very helpful. I suspect you have VM carbs from the description. If so, go to the web site in my siganture and look for the VM Carb Connections page.

Typically there will be the fuel line + a vacuum line to the petcock and maybe 2 that go to valve cover to actuate a breather that allows fumes to go back to air box (emission conntrol device). But to be sure see Wired's site.