Re: Honda cb 750A Carb problem

Posted by TOOLS1 on Mar 04, 2013; 2:21am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Honda-cb-750A-Carb-problem-tp4037323p4037332.html

Do you have a manual? If not you can download the factory manual from the home page here, for free. It shows how to adjust the float. Those numbers are refering to how high the float sits from the base of the carb before collapsing the spring in the needle valve. Also those screws are supposed to have a very tiny washer, and O-ring on them. If those are not there it will cause a problem, since they are "fuel" adjustment screws. They should be set at. 76-1 1/4 turn, 77-1 turn, 78-1 1/8 turn.
I don't know what all you have done as far as cleaning, but I would recommend that you remove the float's, and jets (I have a thread in the repair section on how to remove the pressed in pilot jets) then find a shop that has a sonic cleaner large enough to hold the whole rack at once, and pay them the +/- $50.00 they would charge for the service. These carbs have so many very small passages that it is next to impossible to clean them with out a sonic cleaner.
TOOLS