so today I am trying to tune my os.12 cv engine in my xxx-nt. It has been 8 months. so I start it up, I try to get it running right, and no luck. when I start it up and warm up Put it on the ground and try to take off it revs up and slowly takes off, so I adjust the slipper 1/4 turn, and put it back on the ground and it dies. and also when I am driving it and I hit the brakes it kills the motor. Any help would be great.



Thanks.

come on some one help me out

sounds like your clutch shoes might be worn out and your idle might be too low

Pull the carb and clean/flush it well including all the needles. Use new o-rings when reassembling. Reset all needles to factory settings including the idle gap. Reinstall it. Verify that the linkages are set up right. Install a new glow plug. Start it and tune as normal.

Oh yeah, and tighten the slipper all the way down and back it off 1/8 - 1/4 turn. You may need to check the slipper friction material to be sure it's still good.

Do what Dave said after you check your clutch, it really sounds like a frozen clutch bell bearing or a broke clutch spring.