I just aquired a ys60 rear exhaust, most everything seems to be there except for a screw on the carb. If you look from the front of the engine on the right front of the carb there is a screw missing. Can you tell me what that is, would you have one to replace it, would you have a manual on this engine, would you have the spec's on this engine????? It has a flatbar throttle if that makes any difference. On the two outlets on the front of the crankcase where do these lines go?? Fuel tank?? which is pressure which is fuel??? I am very interested in getting this engine running, It has great compression. Any help would be much appreciated.

Gil