A lot of carbon on spark plugs. How to fix?

[Thorby]

I just changed my spark plugs and all except #1 had a lot of carbon buildup.  These spark plugs did 4500 miles.  Is there anything I can do with the carb adjuster screws to fix this or am I screwed until I get my carbs redone because my floats are not working?

[Lucky 1]

I cannot help you without all the important information.

YEAR/Size?
Exhaust type and muffler?
Intake system?
Slide needle position?
Main Jets?
Slow Jets?
Mixture screws?

I do not need any other info but carbs is the last thing in the tuning process.
So if the floats are not adjusted, valves are not adjusted, timing not correct,
you are not ready to work on the carbs.

[Re-run]

http://honda-cb750-s.456789.n3.nabble.com/Re-A-lot-of-carbon-on-spark-plugs-How-to-fix-td4022963.html

[alexbarb]

To remove the carbon from the spark plug you could also use any sharp edge object. Also make sure that you should remove all the carbon perfectly. So that the current could be easily passed out through spark plug.
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Are you looking for plastic protectors | npt threads

[Hoosier Daddy]

A wise man once said
"90% of all Carb problems are electrical."

[robs750]

Thorby wrote

or am I screwed until I get my carbs redone because my floats are not working?

If you know the floats are messed up,then yes.