[blueboy5000]

1) make sure throttle is adjusted correctly. you shouldn't have much play in the throttle cable. You adjust this by using the two nuts on the throttle-cable housing attached to the carb,

2) turn up the idle. The bike should idle around 2000-2200 rpms when cold started, and should drop to 1800 or so after 5 minutes. But right now you just want a fast idle so you can adjust the bike's carb. The idle screw is the screw with a spring on it right that makes contact with the throttle cable.

3) if you have not done so, seat the mixture screw and tun it counter-clockwise (left) 2 and 1/2 turns.

4) let bike run 10 minutes. After bike has remained running for ten minutes, turn mixture crew 1/4 turn to left. wait five seconds, listen for RPM increase. Repeat until rpms do not rise. turn CLOCKWISE 1/2 turn EXACTLY. This is a SLIGHTLY RICH mixture. This is where your mixture should be for optimum performance.

5) set idle using idle screw to 1800 rpms.