Vaccuum hose on carb?

[Groundworx]

I got a 04 KFX400. The float was sticking so I pulled the carb off and cleaned it up. While I was putting it back on, a vaccuum hose fell off. Let me see if I can explain which one it is. There is one that goes to the petcock, the main fuel line, and this one. The hose hooks to the carb on the same side as the fuel and vaccuum line to the petcock. It is towards the top of the carb. Can anyone tell me where the other end of that damn thing hooks? I can't seem to get it to start again. Will this hose being unhooked cause it not to run?

[kfx400rider03]

turn the fuel on pri"prime"
my friends z wont run enless its on prime probaly because his hose isnt hoooked up like yours.

[Groundworx]

I did some checking around, and that is just a vent hose for the bowl. It didn't hook to anything. I found out that I fouled the plug while I was messing with it.

[kfx400rider03]

o lol
but i wonder why my friends doesnt run uless its on pri