Hi new to the forums, came here because I have some questions about my bike and hopefully someone can help. I recently picked up an 81 KZ750LTD (8800 miles) for $400 (runs but clearly has carb issues). I removed the carburetors and I'm wondering about the way some of the lines are run. The overflows are going into the air box, and that doesn't really make sense to me, so first question is are they supposed to? Next are the vacuum lines, the left is going to the petcock which looks normal but #2 and #4 have lines that "T" and go to the front of the bike and #3 is plugged off. It looks legit but they are new lines so would like to know. Does anyone have any diagrams or links to one that I can look at? Any help, tips, pointers would be appreciated.

 

Welcome to KF

check this out since they carry alot of diagrams and parts for older rides.
http://www.bikebandit.com/oem-parts/...750e/o/m150570