I have updated the link above to the new website. I didn't know American Sportworks had sold out apparently. It is the thrid time this has happen. First they were Manco, then American Sportworks, and now American Landmaster.
What Luffy said is basically correct as there is only one vacuum line that goes from the carburetor to the intake. And the fuel line from carburetor to the fuel tank auto petcock. I don't see any fuel pumps shown so I assuming gravity fed. There is also a drain line that need to be route so fuel overflow can drip away from the frame. There is a reference to an automatic fuel valve. If this like others I have seen on ATVs it is vacuum operated and therefore be fed off the intake too.
The below link for the 150cc carburetor. The rest are located at the above updated link.
http://americanlandmaster.com/pdfs/UTV/accessories/15856_breakdown.pdf