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blueboy5000 · 04-12-2014, 08:10 AM

The #105 jet is probably fine for now.

The carb SHOULD be set to 2 and 1/2 turns off of seat. So to make sure SEAT the mixture screw (turn all the way CLOCKWISE but DO NOT TIGHTEN!!!) then turn the screw out 2 and 1/2 turns. PLACE BIKE ON CENTER STAND AND THEN START BIKE. Then turn the screw 1/8 turn at a time COUNTERCLOCKWISE until you get HIGHEST RPMS, then turn the screw 1/4 turn CLOCKWISE and LEAVE IT. That should be proper AIR-FUEL RATIO.

Then adjust the IDLE SCREW (screw on throttle, text to throttle cable) until the RPMS are as HIGH AS POSSIBLE WITHOUT TURNING THE REAR WHEEL.

That's it, you should be good, have fun riding!

04-12-2014, 08:10 AM	#27
blueboy5000 Join Date: Jul 2011 Location: Connecticut Posts: 493	The #105 jet is probably fine for now. The carb SHOULD be set to 2 and 1/2 turns off of seat. So to make sure SEAT the mixture screw (turn all the way CLOCKWISE but DO NOT TIGHTEN!!!) then turn the screw out 2 and 1/2 turns. PLACE BIKE ON CENTER STAND AND THEN START BIKE. Then turn the screw 1/8 turn at a time COUNTERCLOCKWISE until you get HIGHEST RPMS, then turn the screw 1/4 turn CLOCKWISE and LEAVE IT. That should be proper AIR-FUEL RATIO. Then adjust the IDLE SCREW (screw on throttle, text to throttle cable) until the RPMS are as HIGH AS POSSIBLE WITHOUT TURNING THE REAR WHEEL. That's it, you should be good, have fun riding! __________________ 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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