1/4 inch black braided fuel line from your local auto parts store, you'll need like 20-22 feet, just buy a 25 foot spool and be done with it...
shop around for prices if you like, but it should be just over a buck a foot. if you've never done it b4, replace just one line at a time, that way you won't confuse them, ignore vent lines, but don't skip carb lines, pulse, etc. and you'll need some replacement clamps, and some good quality zip ties.
if all that made you confused, time to find a buddy with more black gunk under his fingernails than you to help