Most O.S. engines SHOULD NOT have their needle settings touched the first time you fire them up.

With the ignitor OFF, hold your finger over the muffler exhaust and crank the engine over ( running in the proper direction the prop SHOULD spin for normal flight ) until you see fuel reaching the carburator. Continue to crank one or two more times.

Once done bring the throttle to idle and put on the ignitor and hit the engine with the chicken stick.

Remember that you may NOT have the throttle settings correct when you start out... if possible enlist the aid of an experienced flyer for this.