Hi. I need help.
Over the winter I found a hose near the fuel pump valve disconnected. I know one is for overflow. I can't figure out where it goes. My only thought from a v like connection by the fuel line to an open spot on the fuel pump valve. My question is, should the valve have the vent part of it open or should it be connected to a hose? if anyone knows of a hose diagram, i would greatly appreciate it. I'm lost! It's starting, but just cutting out like the gas is going through. It isn't even a year old and hasn't had tons of use. Thanks

 

a picture would be very helpful, i dont remember there being a fuel pump on the ata150b but its been awhile. if you have one similar to this Fuel Pump Valve #05 for Chinese Scooters & Mopeds then the hose typically goes from the intake elbow then "Y" and goes to the carb and to the fuel pump valve.
the overflow hose comes right off the bottom of the carb.
the cutting out would be caused by a vacuum leak

thanks adam