I have a new 66cc grubee and a CNS carb. The problem is the air/fuel screw is flat. I has no notch. I cannot use a screw driver to turn it. Am I missing something?
Yes a NT carburetor. Not really sure but is it a plug due to EPA. Are you not sure that it isn't something that you can dig out exposing a slot?I have a new 66cc grubee and a CNS carb. The problem is the air/fuel screw is flat. I has no notch. I cannot use a screw driver to turn it. Am I missing something?
Just drill a hole in the cap and pry it off, the air screw is underneith...I have a new 66cc grubee and a CNS carb. The problem is the air/fuel screw is flat. I has no notch. I cannot use a screw driver to turn it. Am I missing something?
This is a good sign that you need to adjust the float so there is less fuel in the bowl. (The float needs to close the needle valve when it is lower in the bowl)I was ridding and noticed a sudden spike in speed. It lasted about 30 sec. and then died. I was out of gas. so i filled up and the bike stared to loose power and speed. I turned the fuel off and after about 45 sec it spiked.
You got it, that is exactly what I would do. The fact that the motor comes to life shortly after the fuel is cut off is a dead giveaway that you need to do a float adjustment. Bending the tab up toward the needle is proper for this condition, just make sure you dont bent too much, it only takes a small change in the tab to make a big change in how the float sits.I think you may be right on adjustin the tab on the float. ( bending it away from the float to shut off earlier) thanks for the reply.
I will look at sediment in the tank as well. I want to firts adjust the float tab,
then ride it, then adjust the needle, then ride, then jet it with a 70mm. and so on.