To start the engine for the first time, turn both mixture screws in untill they bottom out, then back them both out 2 full turns. Connect you fuel line/battery etc. Leaving the ingnition OFF, close the choke with your thumb and rotate the prop counter-clockwise. If you have clear fuel tubing, you should see gas being drawn up from your fuel tank. Keep rotating the prip until the gas reaches the carb. All the chambers and passages inside the carb are empty, so keep turning the prop untill you feel gas on your thumb.

Once the engine is primed you will hear a hiss from the carb as you rotate the prop, that is usually how I tell when it is ready to start. Remove your thumb from the carb, open the throttle about 1/4, turn on the ignition and give the prop a healthy counter-clockwise flip (wear a heavy glove!). I bet it fires within the first 5 flips! If it doesn't re-prime until the carb is wet again.

Once the engine is running, reduce your throttle to a reasonable idle. Now screw the "L" needle in slowly, RPM will rise, when you reach the max RPM, tun the "L" needle back one-quarter turn, then re-adjust the idle as necessary.

To get the high-speed needle in the ball-park, move the throttle up to 3/4 or so, the engine will run rough as you will be ridiculously rich at this point. Turn the "H" needle in until things smooth out. Reduce your throttle to anout 1/3 and you should be good for break-in. Run it this way for a couple of tanks of fuel, with short bursts of full throttle to keep it from loading up, thenyou should be ready to lean out the top end a little bit more and go flying.

Once you get this engine dialed in, resist the urge to fiddle!