Login  Register

Re: 82 cb 750sc idiling problem

Posted by motogrady on Aug 23, 2013; 1:16am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/82-cb-750sc-idiling-problem-tp4045060p4045092.html


yes, little brass screws.
one for each carb.
only ones you can get to without dropping the bowls (bottom half of the carbs)

thing is, the passageways from those screws to where the gas actually dumps into the airstream are real small.  they get clogged or gunked up, or heaven forbid something crystalizes in there,
it won't matter what you set the air screws to.  fuel won't get past the clog.

as far as the knob adjustment, something is off there.
screwing the knob in should be just like turnining the throttle a small bit.
if the rpms increase with the throttle, the knob should do it also.

I recommend cleaning them as per Tools thread on the subject, he has it on a sticky, carb cleaning for dummies I think.  One of the best procedures I've ever come across on the subject.
The kid that had it prob just glossed over them.

if it pulls good all thru the rpm range, but just won't idle, study that knob, how it's supposed to work
and how it actually works.  Some little tit or stop might be bent or missing.

good luck guy, keep the faith, and us updated too.