R69s carb issue- main jet

[jgreen]

I read about this on Duane Aushermans website, and sure enough, it happened to me.

Bike died on me, I thought I ran out of gas. It wouldn’t run worth a damn, limped it home.

After cleaning the carbs, adjusting valves, and a new condenser, with minimal success, I was trying to adjust the carb idle on the right side, and nothing I did changed it.

Turns out the main jet had risen so high in the carb body that it was higher than the highest point of the idle speed screw!

I was able to tap it into place, but I’m wondering why it did this. I imagine with vibrations it would fall down, not rise up…

[therealkennyboy]

Physics

https://www.google.com/url?sa=t&rct=j&q ... i=89978449

[jgreen]

Thank you, Ken, that was really interesting!

[808Airhead]

I would have dabbed a little red loc-tite on the splines before hammering it back down. Anything helps!

[DIS295]

Is there a bottom to that hole that stops the jet from being pushed too far down?