Steering adjustment

[monomono]

My 82 CB750SC has developed a steering wobble between 40-80 kmh. I lifted the front wheel off the ground and there's a bit of play in the steering.

I can't figure out how to tighten it up. There's just a top bolt which is already tight. Below that is some sort of smooth collar with no notches.

 

[Oscar Meyer]

Not sure if you can figure it out from this or not. You will have to remove the handle bars, then that large nut you are looking at, then loosen the top pinch bolts holding the fork tubes onto the bracket, then remove the top bracket. Then you will see the adjusting nut. If you don't know the condition of the bearings then it is not always successful tightening them down. Look down the pages to page 185 or so.
https://www.cb750c.com/publicdocs/C...erviceManualChapter13FrontWheelSuspension.pdf