If you saw my other thread I was looking into buying an Icon 50x. I bought it today for $340. I think I got a pretty good deal. The engine seems identical the to xr50 I had. I need some info on adjusting the throttle, Im not sure if which way to turn the air/fuel screw to lean/richen it. Also after I ride it for a while what oil should I put in. I have a quart of mobil non sythetic 10w40. Will that work? Anyway it seems to have alot more power than my hinda 50. Im not sure how? But I never even got into 4th gear. I may try tommorow. Heres the only pic Ive got so far.