Re: carburator tuning
CNS carbs are hard to tune. They were designed to meet epa requirments, more than actually make your motor run well. The eaisest way to get optimum performance is to toss it in the can, and replace it with an NT of a Speed carb. Be sure and buy a new throttle cable for a NT at the same time. The throttle cable for a CNS is different. The cable for a NT, or Speed carb is the same.