The low speed jet is the one closest to the engine, other is high. If it'll run, don't worry about factory settings--start it and lt warm a minute or so, then slowly adjust low speed to where it runs the smoothest. You man also need to adjust the idle screw. Then with it running at full throttle, adj the high speed--just guessing, it'll need to adjusted richer (counter clockwise). If it still has limiter caps on the carb adj screws, those need to be removed so screws can be adjusted.
In your original post you said it ran poorly, if it's not running at all, adjust both screws at 1&1/2 turns out and give it a try!