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This is a picture of a brand new plug ran one time in the quad (kazuma 50cc) the carb is spotless clean and has new fuel and battery. What could be destroying these plugs. I have the carb adjusted to the 2 full rotation out as suggested by the manufacturer. Sent from my SAMSUNG-SGH-I717 using Tapatalk 2

I rebuilt the carb, the pilot screw is located near the engine head to i assume its fuel adjustment and not air. I can screw this all the way in, back off one turn (tried tight to fall out loose at 1/4 turn increments nothing changed) and it will start and idol but if you touch the throttle it dies, you can ease the throttle in and get higher RPM but it is choppy, black smoke like the dickens. carb is spotless. need help. I have to remove the carb every time to adjust this pilot screw as its in an impossible location to adjust while on the quad and im ready to burn this thing. text nine one eight two zero eight two seven 82. or ill keep an eye on this thread ,, october 11th 2011