Could the two brass vents on the top behind the diaphragm cover be vent and overflow? I thought the brakes for those two as well but there aren't any niples or spare backing plate holes I can see. Am I thinking the tube off right above the bowl is fuel in but thays actually the overflow?Nope, don't have a picture of that carb on that bike. Lots of other combinations though.
They have a carb overflow that runs down the back of the motor, and a front diff and rear brake breathers that both run up near the front of the tank, and a battery vent that goes down near the front of the bike, and crankcase vents that branch to the airbox and that tube near the tank that has a T fitting in the end, and the engine breathers normally have a restriction in the branch of the breather that goes to the airbox.
I've never seen it, but could it be that the front drum brakes have a breather ? They had a seal between the drum and the backing plate(which never lasted long).
I couldn't make out the numbers, yeah Mikuni. Getting late so I'll pull it back off tomorrow and blow on it. 😀 Enjoy your brew. I'm out. When I get all this figured out I'm going to draw up a diagram to hopefully help the next person. I understand all the driveline and rear brake vent crap. And the battery drain was long gone. Agm going back in so that's not an issue.Do you have the number off the carb ? And it's Mikuni ?
I'll see if I can find anything.. but I am drinking beer.. Be warned !
No they're in another barn and have all the plastics on. Thanks for the help.I suppose you've looked at your other bikes ?