How to install fuel line on 1979 XS 500 - 1979 Yamaha XS 500

when you post about a 79 xs 500,then that is the answer you get,line up the timing marks at tdc

You probably have varnish build up in the carburetors, causing restricted air flow, and therefore the engine is running too lean, especially on the right side, and a lean running engine will run hot at the exhaust. It only idles when the choke is on because the choke creates a richer fuel supply. A can or two of commercial fuel cleaner through the fuel supply may get the engine's jet's orifices cleaned out. Otherwise, overhaul the carbs.
Hey, nice old bike, though. Good luck

The parts catalog can be found on line. Search with the make and model.
It was not born it was manufactured

Please get it here :
www.wemoto.com/bikes/Yamaha/
www.ebay.com

good day Sir, try this link hope this will help you

yamaha

www.bikepics.com/yamaha/virago500

I had the same bike.there is a rubber line that connects the two carbs together.the carb with the lighter lean sparkplug is the one being feed by the other carb with the darker richer sparkplug with the fuel line connected to it i bet.