Hey guys, the only screw that can be adjusted on the outside of this carb is the idle speed screw with the spring around it. Can anyone tell me how to adjust the air/fuel mixture without rejetting? Seems to be running a tad lean as it has a "flat spot" in first gear. Seems to pull fine in 2-4, but I can feel that it wants a tad more fuel... thanks...

Oh, for those of you that might need a castle nut for the front end of your Jet 250, it is a Metric, size 10 fine thread. I could not find a castle nut in this size, so I bought a regular nut and cut it myself. Actually, I bought two and cut them both. Also got some real deal pins, and they are MUCH MUCH stronger than the factory pins.

 

As I had said before Raceway sent several of us new jets for the 250, I can't recall the sizes but others on the Raceway area of this forum swapped theirs out also and can be more help. You may want to post there from now on as that is where the Jet owners typically hang!