Where can I obtain a diagram that shows fuel line routing for an unidentified ATV?

Suzuki QuadRunner LT F250 F250F LTF250 Manual
Suzuki atv manuals

How do you know they are gas lines? Are they the same diameter? Why are they not still connected?
Does this ATV have a fuel pump? If so they probably connect to the pump.. one is the fuel line and one is a vacuum line... the other probably an overflow.

fuel goes from tank to carb, its not that complicated.

Rick, You will have to get year make and model and find a manual.
Check the attached links,Manuals and guides, Good luck with your Bike
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ATV TROUBLESHOOTING AND MAINTENANCE
ATV Service and Repair Manuals
http://www.carlsalter.com/motorcycle-manuals.asp

Carol, you need a manual.
ATV TROUBLESHOOTING AND MAINTENANCE
ATV Service and Repair Manuals
http://www.carlsalter.com/motorcycle-manuals.asp

if you cant tell what it is then most likely its a chinese model. google for a chinese atv forum

fuel runs from the tank to the carb I figure. not much to it.

blocked fuel line, blocked fuel filter, petcock is closed.