Good that fuel will be fine and I beleve it is 15% nitro, The Cox racing fuel is 30%.
First thing to do since this is a used engine is to remove the glowhead and hook up your ignitor to see if it lights up. If so great.
All of the Cox reed valve engines are very sensitive to dirt in the reed and this is why I asked if it is used. Appears very clean and prior owners may never have got to run (a common occurance) so for now we will leave a reed cleaning on the back burner.
So lets give it a try agine. First open that muffler choke ring so that it is fully open and leave it there. Close the needle all the way and open 3 and 1/2 turns, this will assure that it starts rich and will need to be leaned. Now we need to prime, use that red stopper on the can with the plastic tube attached and the can is used as a squeeze bottle. Rotate the prop to move the piston to TDC (all the way up on compression) and insert that fuel tube through the muffler to squirt directly on the exhaust port which is closed by the piston (don,t squirt into the open port).
Now just flip the the prop a few times with the ignitor conected and you should hear the sound of frying coming out the muffler if not you are not lit up.
To start don,t use an electric starter use that starter spring . hook the spring over a blade and wind up backward almost a full 360 and just slide your hand away. If it goes the only thing left to do is screw the needle in untill it is running smoothly. If no pops then try another piston exhaust port closed prime. If all of this results in frustration then it will be time to disassemble and clean out the reed. But first try the above.
John