ORIGINAL: tsyssa
Please do not get rid of the carb return spring. It keeps some tension on the butterfly shaft assembly so that it does not vibrate and wear out. The amount of current draw is tiny.
If you use the same dimension servo arm (center to center) you do not have to change anything on the throttle arm to get very good resolution. Hope this helps!
Todd,
I understand your reasoning here. Can you come up with a solution to modify the butterfly shaft assembly to keep it from vibrating & wearing out for those who want / need to remove the spring ? Reaching around the prop to pull on the nyrod to close the choke while attempting to start the engine -even with an assistant presents potential danger for prop hand or arm contact as Matt pointed out. I have no doubt that Matt can come up with a solution for his particular application. But, a simple choke rod to open /close like we do with so many gas engines( my DA100 included) is really the best way to go, IMHO.