Re: Os 37 Hi, OS.37, move the throttle arm and notice it moving in and out. When in the "in" position the throttle is closed and as it moves outward it is open throttle. Hope this helps. As far as the throttle needle on the Carb. close it fully and open it 1 1/2 turns, seems to be the best setting. Please do as the instructions state that came with the kit before taking my advise. |