Originally Posted by mxwrench
Let me try and dispell some of the mystery surrounding this engine................
I have found that the optional Orion carb venturi that is more gently tapered helps to lean out the Mid speed slightly, offering better throttle response..................
..................please feel free to PM me and I will help in any way I can to make sure you are getting the best out of your CRF engine.
BK
Have you tried the different optional carb needle options offered for this engine???
What is the theoretical purpose of each different set??
Thanks
AFM