just wondered if someone could point me in the right direction. I have fitted new rubbers to the carbs(engine side) and a new fuel filter as my bike  was stopping at the lights and surging at times. after refitting the carbs i noticed two pipes coming from the rear of the carb bank which fit to a swivel type joint looks like a bar which runs the length of the carbs on the air box side. i wondered if these were breathers so tried starting the bike and when the ignition is turned on the bike tries to fire but the fuel pump continually clicks. obviously from my  description i'm a novice mechanic  so you will have to make it simple. Thanks rob