Samp.

First of all make sure the engine is ready to run. If the engine is new then It's probably assembled correctly. Snug up the four tank to case screws and snug down the glow head.

After fueling open the needle four full turns, turn the prop so that the piston is completly blocking the exhaust ports on the cylinder. Put 1-2 drops of fuel at the exhaust port. Hook up the glow clip, engage the prop onto the starter spring, wind one turn CLOCKWISE and let her go (The prop should spin COUNTERCLOCKWISE). The engine should start. If not keep flipping it untill it does. If the engine only runs for a few seconds open the needle another 1/4 turn and try again. Once the engine starts it will be running rich. start leaning (closing) the needle untill max rpm is attained. Continue leaning untill the motor starts to loose RPM, at this piont the engine is running too lean and you need to open the needle untill the rpm's pick back up and the engine is screaming. Once you've reached this piont open the needle 1 or 2 more clicks and she's ready to rock. Cox engines essentialy need NO break in.

With 1/2 A engines fuel is important. They like the nitro! 20% to 30% and at least 20% oil, and at least some, if not all, of the oil should be CASTOR oil. This is very important. If you need further help post ypur questions in the 1/2A forum. There's a great bunch of guy's there who run these engines all the time

Darren