1981 honda cb750 k carb/fuel diaphragm help!?

[tomhink]

the two hoses going off to the left.  Any idea what/where those connect?  I know the one coming off the fuel diaphragm at the bottom of the picture is called "vacuum hose" but still don't know what it connects to.  Any help would be great.

thanks,

Thomas

[slwool]

One fuel supply line comes from the tank to the diaphragm, another goes from the diaphragm into the carbs behind #3.  When we overhauled mine we simply discarded the diaphragm and brought fuel from the tank petcock through an in-line filter directly to the carburetors.  Works perfectly and eliminates the useless diaphragm apparatus.

[blackhawkrider]

The smaller top hose is your breather hose it connects to nothing. The "vacum hose"  connects to a small nipple poking out of one of the carbs near the cylinder side I believe number one cant remember though. Also you can remove the auto petcock which is what that thing is its only function is a backup incase you forget to turn you petcock off.

[preppypunk2890]

what is the little nipple in between the middle two carbs for???? it just spews gas everywhere??? my carbs had a small leak so i found the hole in the fuel rail so i closed the hole up then it was leaking through the gasket on #3 so i fixed that now gas just pours from everywhere what is going on???????