From experience. Run at least a gallon of fuel before first flight as the engines are tight as they dont idle very slow for long periods when new.This may prevent flameouts mostly on slow idle. Second Fill the tiny hole in the butterfly with solder as to to get a good choke on the motor. . They like to start wet but not flodded. If you have it on a test stand squirt a little fuel through the carby with the throttle fully open flip the prop then switch on the ignition. If if fires straight away you know its wet enough.My procedure is to close the choke and flip about 10 times with the throttle open, close the throttle to about 1/4 switch ignition on and flip till engine pops. Then choke of.. Remember that if you wait to long the auto ignition cut of in the modual wont allow any spark which is an important safety feature of the of the ignition modual to prevent accidental starting of the engine .If not sure switch of and on again.. My hi and low needles were set at about 1 turn from there you should be able to to get a good stable idle and transition. Every motor has its own favourite starting procedure.youre task is to find what youres is.