ok pic #1- that is the FUEL LINE CONNECTION- goes to the petcock
pic #2- that is a VENT CONNECTION - put a rubber line on that and let it OPEN, just hang the line between the carbs
pic #2- that is the CHOKE CABLE slider, put the end of the choke cable in it and make sure it works smoothly
pic #3 - that is a port that can be used for carb synch but in your case it may be the petcock if it is VACUMN OPERATED (im not 100% positive on the EX series bikes) if the petcock is VACUMN operated it will have one big connection for the fuel line and one small connection for the vacumn line. if you dont have a vacumn operated petcock then PLUG that port off.
:wink: