1981 CB750K Fuel System

Posted by tektrix on May 31, 2011; 9:31pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/1981-CB750K-Fuel-System-tp3008331.html

I'm fixing up an '81 CB750k, and the overflow tubes that are supposed to run from the bottom nipples on each of the four carbs are missing.

Two questions:

1. Are there any specific tubes I need to replace these, or will any standard line work? If I do need a certain part, I have no idea where to find these.

2. Where do these tubes run to from the carburetors? I've seen schematics of the tubes connecting to the bottom nipples, and then going toward the back of the bike, but I have yet to see a chart or any information as to where they go after that.


Also, if anyone is familiar with the automatic fuel flow system that was implemented with the 1980's 750Ks, any information they could provide would be great. What I'm looking for is a chart or picture showing exactly how it sits above the carbs on the right side, all of the tubes and fittings, and where those tubes go to on both ends.


Thank you all for your time.

-Tek