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.
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2011 Roketa MC-23-150
4T 150cc 157 qmj
24mm carb w 115 main jet and paper cone air filter
Manual petcock w Tygon fuel lines
Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust
RED spring clutch
Adjustable CDI (brand unknown, it's blue and red and works great!)
KOSO high performance variator w 12g sliders
Gates Powerlink 835-20-30 belt
GPS verified 65mph on flats.
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