Well I finally went for what I thought was going to be a good ride. To start I could not get the trike to gain any speed. It would just bog down and sputter along.

Not sure what the problem was. After a few attempts at adjusting the idle and air mix screws at different settings, it took off when I gave it throttle.

Ran great for about 10 minutes until I came to a stop, then it started popping and died.

I noticed at this point my idle screw was gone and it must have been running great with all the extra air it was sucking in.

My question is, does anyone have a part number for this idle adjustment screw?

The carb, according to the manual is a Mikuni VM24SS.

I have looked online and can see the part, but nothing listed with an actual part number. I have also noticed 2 variations in the idle screw.

1 has an o-ring and a spring and the other is just a screw.